we distribute our refined products through one of the largest terminal operations in the united states and one of the largest private domestic fleets of inland petroleum product barges . in the first quarter of 2017 , we revised our segment reporting in connection with the contribution of certain terminal , pipeline and storage assets to mplx . the operating results for these assets are now reported in our midstream segment . previously , they were reported as part of our refining & marketing segment . comparable prior period information has been recast to reflect our revised presentation . the results for the pipeline and storage assets were recast effective january 1 , 2015 and the results for the terminal assets were recast effective april 1 , 2016. prior to these dates , these assets were not considered businesses for accounting purposes and , therefore , there are no financial results from which to recast segment results . our operations consist of three reportable operating segments : refining & marketing ; speedway ; and midstream . each of these segments is organized and managed based upon the nature of the products and services they offer . see item 1. business for additional information on our segments . refining & marketing – refines crude oil and other feedstocks at our six refineries in the gulf coast and midwest regions of the united states , purchases refined products and ethanol for resale and distributes refined products through various means , including pipeline and marine transportation , terminals and storage services provided by our midstream segment . we sell refined products to wholesale marketing customers domestically and internationally , buyers on the spot market , our speedway business segment and independent entrepreneurs who operate marathon ® retail outlets . 47 speedway – sells transportation fuels and convenience products in the retail market in the midwest , east coast and southeast . midstream – gathers , processes and transports natural gas ; gathers , transports , fractionates , stores and markets ngls ; and transports and stores crude oil and refined products principally for the refining & marketing segment via pipelines , terminals , towboats and barges . the midstream segment primarily reflects the results of mplx , our sponsored master limited partnership . strategic actions to enhance shareholder value on january 3 , 2017 , we announced plans to significantly accelerate the dropdown of assets with an estimated $ 1.4 billion of mlp-eligible annual ebitda to mplx and to exchange our economic interests in the general partner of mplx , including idrs , for newly issued mplx common units . in 2017 , in connection with these plans , we contributed assets to mplx with projected annual ebitda of approximately $ 400 million for $ 1.93 billion of cash and approximately 31 million mplx common units and general partner units . see “ mplx lp - mplx highlights ” for information on these dropdowns . on february 1 , 2018 , we completed the dropdown of the remaining identified assets , which included our refining logistics assets and fuels distribution services with projected annual ebitda of approximately $ 1 billion , in exchange for $ 4.1 billion of cash and 114 million mplx common units and general partner units . the cash consideration for these dropdowns in 2017 and 2018 was financed by mplx with $ 6.0 billion of debt . see “ mplx highlights ” section for additional information on mplx debt financing in 2017 and 2018. the equity financing was funded through new mplx common units and general partner units issued to us . immediately following the closing of the february 1 , 2018 dropdown , our idrs were cancelled and our economic general partner interest was converted into a non-economic general partner interest , all in exchange for 275 million newly issued mplx common units , which resulted in us owning approximately 64 percent of the issued and outstanding mplx common units as of february 1 , 2018. these actions were designed to provide a clear valuation of our midstream platform and to provide an ongoing return of capital to our shareholders in a manner consistent with maintaining an investment-grade credit profile . our january 3 , 2017 announcement included conducting a full and thorough review of speedway to ensure optimum value is being delivered to shareholders over the long term . on september 5 , 2017 , we announced that our board of directors , based on a recommendation from its independent special committee , determined that maintaining speedway as a fully integrated business with mpc provides the best opportunity for enhancing long-term shareholder value . key factors in the board of directors ' decision to maintain speedway as an integrated business within mpc included substantial integration synergies , support of mpc 's investment-grade credit profile and ability to return capital to shareholders and the strong value of cash flow diversification . executive summary results select results for 2017 and 2016 are reflected in the following table . replace_table_token_23_th net income attributable to mpc increased $ 2.26 billion , or $ 4.49 per diluted share , in 2017 compared to 2016 , primarily due to an income tax benefit of approximately $ 1.5 billion resulting from the tcja and improved results from our refining & marketing segment . 48 refining & marketing segment income from operations increased in 2017 compared to 2016 . excluding the $ 345 million lcm inventory benefit recognized in 2016 , the increase in segment results for 2017 primarily resulted from higher lls crack spreads in both the u.s. gulf coast and chicago markets . the lls blended crack spread for 2017 increased to $ 9.84 per barrel from $ 6.96 per barrel in 2016. these favorable effects were partially offset by less favorable product price realizations as compared to the spot market prices used in the lls blended crack spread . story_separator_special_tag crack spreads can fluctuate significantly , particularly when prices of refined products do not move in the same relationship as the cost of crude oil . as a performance benchmark and a comparison with other industry participants , we calculate midwest ( chicago ) and usgc crack spreads that we believe most closely track our operations and slate of products . lls prices and a 6-3-2-1 ratio of products ( 6 barrels of lls crude oil producing 3 barrels of unleaded regular gasoline , 2 barrels of ultra-low sulfur diesel and 1 barrel of three percent residual fuel oil ) are used for these crack-spread calculations . our refineries can process significant amounts of sour crude oil , which typically can be purchased at a discount to sweet crude oil . the amount of this discount , the sweet/sour differential , can vary significantly , causing our refining & marketing margin to differ from crack spreads based on sweet crude oil . in general , a larger sweet/sour differential will enhance our refining & marketing margin . future crude oil differentials will be dependent on a variety of market and economic factors , as well as u.s. energy policy . the following table provides sensitivities showing an estimated change in annual net income due to potential changes in market conditions . replace_table_token_25_th ( a ) the tax rate reflects the lower corporate tax rate under the tcja . ( b ) weighted 40 percent chicago and 60 percent usgc lls 6-3-2-1 crack spreads and assumes all other differentials and pricing relationships remain unchanged . ( c ) lls ( prompt ) – [ delivered cost of sour crude oil : arab light , kuwait , maya , western canadian select and mars ] and assumes approximately 58 percent of crude throughput are sour-based crudes . ( d ) assumes approximately 17 percent of crude oil throughput volumes are wti-based domestic crude oil . ( e ) this is consumption based exposure for our refining & marketing segment and does not include the sales exposure for our midstream segment . in addition to the market changes indicated by the crack spreads , the sweet/sour differential and the lls to wti differential , our refining & marketing margin is impacted by factors such as : the selling prices realized for refined products ; the types of crude oil and other charge and blendstocks processed ; our refinery yields ; the cost of products purchased for resale ; 52 the impact of commodity derivative instruments used to hedge price risk ; and the potential impact of lcm adjustments to inventories in periods of declining prices . inventories are stated at the lower of cost or market . costs of crude oil , refinery feedstocks and refined products are stated under the lifo inventory costing method and aggregated on a consolidated basis for purposes of assessing if the cost basis of these inventories may have to be written down to market values . at december 31 , 2017 , market values for refined products exceed their cost basis and , therefore , there is no lcm inventory market valuation reserve at the end of the year . based on movements of refined product prices , future inventory valuation adjustments could have a negative effect to earnings . such losses are subject to reversal in subsequent periods if prices recover . refining & marketing segment income from operations is also affected by changes in refinery direct operating costs , which include turnaround and major maintenance , depreciation and amortization and other manufacturing expenses . changes in manufacturing costs are primarily driven by the cost of energy used by our refineries , including purchased natural gas , and the level of maintenance costs . planned major maintenance activities , or turnarounds , requiring temporary shutdown of certain refinery operating units , are periodically performed at each refinery . the following table lists the refineries that had significant planned turnaround and major maintenance activities for each of the last three years . year refinery 2017 catlettsburg , galveston bay and garyville 2016 galveston bay , garyville and robinson 2015 catlettsburg , galveston bay , garyville and robinson speedway our retail marketing margin for gasoline and distillate , which is the price paid by consumers less the cost of refined products , including transportation , consumer excise taxes and bankcard processing fees , impacts the speedway segment profitability . gasoline and distillate prices are volatile and are impacted by changes in supply and demand in padd 1 and padd 2 where we operate . numerous factors impact gasoline and distillate demand throughout the year , including local competition , seasonal demand fluctuations , the available wholesale supply , the level of economic activity in our marketing areas and weather conditions . the following padd 1 and padd 2 market demands for 2017 are based on current estimates . padd 2 2017 gasoline demand grew for the fifth consecutive year , up 0.5 percent from last year 's record level . padd 1 gasoline demand posted an annual gain in 2017 for the fourth consecutive year , up 0.9 percent year over year . continuing economic growth and slowing fleet fuel efficiency gains supported gasoline demand in most of the u.s. distillate demand in 2017 posted its first year-over-year increase in three years , up 1.9 percent from 2016. increases in truck tonnage , which grew by 3.8 percent , the largest annual increase since 2013 , and rail traffic ( total carloads and intermodal ) supported a 3.4 percent increase in 2017 distillate demand over 2016 's six year low . padd 1 2017 distillate demand was up 0.8 percent from its four year low in 2016. padd 2 2017 distillate demand is up 2.8 percent year over year . the margin on merchandise sold at our convenience stores historically has been less volatile and has contributed substantially to speedway 's margin . more than half of speedway

cash used in dividend payments totaled $ 773 million in 2017 , $ 719 million in 2016 and $ 613 million in 2015 . the increases were primarily due to increases in our base dividend , partially offset by decreases in the number of outstanding shares of our common stock as a result of share repurchases . dividends per share were $ 1.52 in 2017 , $ 1.36 in 2016 and $ 1.14 in 2015 . cash used in financing activities in all three years included a portion of the payments to the seller of the galveston bay refinery under the contingent earnout provisions of the purchase and sale agreement . derivative instruments see item 7a . quantitative and qualitative disclosures about market risk for a discussion of derivative instruments and associated market risk . capital resources our liquidity totaled $ 7.3 billion at december 31 , 2017 consisting of : replace_table_token_37_th ( a ) excludes mplx 's $ 2.25 billion bank revolving credit facility , which had $ 505 million borrowings and $ 3 million of letters of credit outstanding as of december 31 , 2017 . ( b ) excludes $ 5 million of mplx cash and cash equivalents . because of the alternatives available to us , including internally generated cash flow and access to capital markets , including a commercial paper program , we believe that our short-term and long-term liquidity is adequate to fund not only our current operations , but also our near-term and long-term funding requirements , including capital spending programs , the repurchase of shares of our common stock , dividend payments , defined benefit plan contributions , repayment of debt maturities and other amounts that may ultimately be paid in connection with contingencies . as discussed in the “ strategic actions to enhance shareholder value ” section in the corporate overview , mplx financed the dropdown transactions in the aggregate with debt and equity in approximately equal proportions . the equity financing was funded through mplx common units and general partner units issued to us .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```cash used in dividend payments totaled $ 773 million in 2017 , $ 719 million in 2016 and $ 613 million in 2015 . the increases were primarily due to increases in our base dividend , partially offset by decreases in the number of outstanding shares of our common stock as a result of share repurchases . dividends per share were $ 1.52 in 2017 , $ 1.36 in 2016 and $ 1.14 in 2015 . cash used in financing activities in all three years included a portion of the payments to the seller of the galveston bay refinery under the contingent earnout provisions of the purchase and sale agreement . derivative instruments see item 7a . quantitative and qualitative disclosures about market risk for a discussion of derivative instruments and associated market risk . capital resources our liquidity totaled $ 7.3 billion at december 31 , 2017 consisting of : replace_table_token_37_th ( a ) excludes mplx 's $ 2.25 billion bank revolving credit facility , which had $ 505 million borrowings and $ 3 million of letters of credit outstanding as of december 31 , 2017 . ( b ) excludes $ 5 million of mplx cash and cash equivalents . because of the alternatives available to us , including internally generated cash flow and access to capital markets , including a commercial paper program , we believe that our short-term and long-term liquidity is adequate to fund not only our current operations , but also our near-term and long-term funding requirements , including capital spending programs , the repurchase of shares of our common stock , dividend payments , defined benefit plan contributions , repayment of debt maturities and other amounts that may ultimately be paid in connection with contingencies . as discussed in the “ strategic actions to enhance shareholder value ” section in the corporate overview , mplx financed the dropdown transactions in the aggregate with debt and equity in approximately equal proportions . the equity financing was funded through mplx common units and general partner units issued to us .
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 Suspicious Activity Report : we distribute our refined products through one of the largest terminal operations in the united states and one of the largest private domestic fleets of inland petroleum product barges . in the first quarter of 2017 , we revised our segment reporting in connection with the contribution of certain terminal , pipeline and storage assets to mplx . the operating results for these assets are now reported in our midstream segment . previously , they were reported as part of our refining & marketing segment . comparable prior period information has been recast to reflect our revised presentation . the results for the pipeline and storage assets were recast effective january 1 , 2015 and the results for the terminal assets were recast effective april 1 , 2016. prior to these dates , these assets were not considered businesses for accounting purposes and , therefore , there are no financial results from which to recast segment results . our operations consist of three reportable operating segments : refining & marketing ; speedway ; and midstream . each of these segments is organized and managed based upon the nature of the products and services they offer . see item 1. business for additional information on our segments . refining & marketing – refines crude oil and other feedstocks at our six refineries in the gulf coast and midwest regions of the united states , purchases refined products and ethanol for resale and distributes refined products through various means , including pipeline and marine transportation , terminals and storage services provided by our midstream segment . we sell refined products to wholesale marketing customers domestically and internationally , buyers on the spot market , our speedway business segment and independent entrepreneurs who operate marathon ® retail outlets . 47 speedway – sells transportation fuels and convenience products in the retail market in the midwest , east coast and southeast . midstream – gathers , processes and transports natural gas ; gathers , transports , fractionates , stores and markets ngls ; and transports and stores crude oil and refined products principally for the refining & marketing segment via pipelines , terminals , towboats and barges . the midstream segment primarily reflects the results of mplx , our sponsored master limited partnership . strategic actions to enhance shareholder value on january 3 , 2017 , we announced plans to significantly accelerate the dropdown of assets with an estimated $ 1.4 billion of mlp-eligible annual ebitda to mplx and to exchange our economic interests in the general partner of mplx , including idrs , for newly issued mplx common units . in 2017 , in connection with these plans , we contributed assets to mplx with projected annual ebitda of approximately $ 400 million for $ 1.93 billion of cash and approximately 31 million mplx common units and general partner units . see “ mplx lp - mplx highlights ” for information on these dropdowns . on february 1 , 2018 , we completed the dropdown of the remaining identified assets , which included our refining logistics assets and fuels distribution services with projected annual ebitda of approximately $ 1 billion , in exchange for $ 4.1 billion of cash and 114 million mplx common units and general partner units . the cash consideration for these dropdowns in 2017 and 2018 was financed by mplx with $ 6.0 billion of debt . see “ mplx highlights ” section for additional information on mplx debt financing in 2017 and 2018. the equity financing was funded through new mplx common units and general partner units issued to us . immediately following the closing of the february 1 , 2018 dropdown , our idrs were cancelled and our economic general partner interest was converted into a non-economic general partner interest , all in exchange for 275 million newly issued mplx common units , which resulted in us owning approximately 64 percent of the issued and outstanding mplx common units as of february 1 , 2018. these actions were designed to provide a clear valuation of our midstream platform and to provide an ongoing return of capital to our shareholders in a manner consistent with maintaining an investment-grade credit profile . our january 3 , 2017 announcement included conducting a full and thorough review of speedway to ensure optimum value is being delivered to shareholders over the long term . on september 5 , 2017 , we announced that our board of directors , based on a recommendation from its independent special committee , determined that maintaining speedway as a fully integrated business with mpc provides the best opportunity for enhancing long-term shareholder value . key factors in the board of directors ' decision to maintain speedway as an integrated business within mpc included substantial integration synergies , support of mpc 's investment-grade credit profile and ability to return capital to shareholders and the strong value of cash flow diversification . executive summary results select results for 2017 and 2016 are reflected in the following table . replace_table_token_23_th net income attributable to mpc increased $ 2.26 billion , or $ 4.49 per diluted share , in 2017 compared to 2016 , primarily due to an income tax benefit of approximately $ 1.5 billion resulting from the tcja and improved results from our refining & marketing segment . 48 refining & marketing segment income from operations increased in 2017 compared to 2016 . excluding the $ 345 million lcm inventory benefit recognized in 2016 , the increase in segment results for 2017 primarily resulted from higher lls crack spreads in both the u.s. gulf coast and chicago markets . the lls blended crack spread for 2017 increased to $ 9.84 per barrel from $ 6.96 per barrel in 2016. these favorable effects were partially offset by less favorable product price realizations as compared to the spot market prices used in the lls blended crack spread . story_separator_special_tag crack spreads can fluctuate significantly , particularly when prices of refined products do not move in the same relationship as the cost of crude oil . as a performance benchmark and a comparison with other industry participants , we calculate midwest ( chicago ) and usgc crack spreads that we believe most closely track our operations and slate of products . lls prices and a 6-3-2-1 ratio of products ( 6 barrels of lls crude oil producing 3 barrels of unleaded regular gasoline , 2 barrels of ultra-low sulfur diesel and 1 barrel of three percent residual fuel oil ) are used for these crack-spread calculations . our refineries can process significant amounts of sour crude oil , which typically can be purchased at a discount to sweet crude oil . the amount of this discount , the sweet/sour differential , can vary significantly , causing our refining & marketing margin to differ from crack spreads based on sweet crude oil . in general , a larger sweet/sour differential will enhance our refining & marketing margin . future crude oil differentials will be dependent on a variety of market and economic factors , as well as u.s. energy policy . the following table provides sensitivities showing an estimated change in annual net income due to potential changes in market conditions . replace_table_token_25_th ( a ) the tax rate reflects the lower corporate tax rate under the tcja . ( b ) weighted 40 percent chicago and 60 percent usgc lls 6-3-2-1 crack spreads and assumes all other differentials and pricing relationships remain unchanged . ( c ) lls ( prompt ) – [ delivered cost of sour crude oil : arab light , kuwait , maya , western canadian select and mars ] and assumes approximately 58 percent of crude throughput are sour-based crudes . ( d ) assumes approximately 17 percent of crude oil throughput volumes are wti-based domestic crude oil . ( e ) this is consumption based exposure for our refining & marketing segment and does not include the sales exposure for our midstream segment . in addition to the market changes indicated by the crack spreads , the sweet/sour differential and the lls to wti differential , our refining & marketing margin is impacted by factors such as : the selling prices realized for refined products ; the types of crude oil and other charge and blendstocks processed ; our refinery yields ; the cost of products purchased for resale ; 52 the impact of commodity derivative instruments used to hedge price risk ; and the potential impact of lcm adjustments to inventories in periods of declining prices . inventories are stated at the lower of cost or market . costs of crude oil , refinery feedstocks and refined products are stated under the lifo inventory costing method and aggregated on a consolidated basis for purposes of assessing if the cost basis of these inventories may have to be written down to market values . at december 31 , 2017 , market values for refined products exceed their cost basis and , therefore , there is no lcm inventory market valuation reserve at the end of the year . based on movements of refined product prices , future inventory valuation adjustments could have a negative effect to earnings . such losses are subject to reversal in subsequent periods if prices recover . refining & marketing segment income from operations is also affected by changes in refinery direct operating costs , which include turnaround and major maintenance , depreciation and amortization and other manufacturing expenses . changes in manufacturing costs are primarily driven by the cost of energy used by our refineries , including purchased natural gas , and the level of maintenance costs . planned major maintenance activities , or turnarounds , requiring temporary shutdown of certain refinery operating units , are periodically performed at each refinery . the following table lists the refineries that had significant planned turnaround and major maintenance activities for each of the last three years . year refinery 2017 catlettsburg , galveston bay and garyville 2016 galveston bay , garyville and robinson 2015 catlettsburg , galveston bay , garyville and robinson speedway our retail marketing margin for gasoline and distillate , which is the price paid by consumers less the cost of refined products , including transportation , consumer excise taxes and bankcard processing fees , impacts the speedway segment profitability . gasoline and distillate prices are volatile and are impacted by changes in supply and demand in padd 1 and padd 2 where we operate . numerous factors impact gasoline and distillate demand throughout the year , including local competition , seasonal demand fluctuations , the available wholesale supply , the level of economic activity in our marketing areas and weather conditions . the following padd 1 and padd 2 market demands for 2017 are based on current estimates . padd 2 2017 gasoline demand grew for the fifth consecutive year , up 0.5 percent from last year 's record level . padd 1 gasoline demand posted an annual gain in 2017 for the fourth consecutive year , up 0.9 percent year over year . continuing economic growth and slowing fleet fuel efficiency gains supported gasoline demand in most of the u.s. distillate demand in 2017 posted its first year-over-year increase in three years , up 1.9 percent from 2016. increases in truck tonnage , which grew by 3.8 percent , the largest annual increase since 2013 , and rail traffic ( total carloads and intermodal ) supported a 3.4 percent increase in 2017 distillate demand over 2016 's six year low . padd 1 2017 distillate demand was up 0.8 percent from its four year low in 2016. padd 2 2017 distillate demand is up 2.8 percent year over year . the margin on merchandise sold at our convenience stores historically has been less volatile and has contributed substantially to speedway 's margin . more than half of speedway

