businesses such as airbnb , homeaway ( which expedia acquired in december 2015 ) and booking.com ( owned by booking holdings ) have emerged as the leaders , bringing incremental alternative accommodation and vacation rental inventory to the market . many other competitors , including vacation rental metasearch players , continue to emerge in this space , which is expected to continue to grow as a percentage of the global accommodation market . furthermore , we see increased interest in the online travel industry from search engine companies as evidenced by recent innovations including direct booking functionality and product enhancements by companies such as google . finally , traditional consumer ecommerce and group buying websites expanded their local offerings into the travel market by adding hotel offers to their websites . for additional detail regarding the competitive trends and risks we face , see part i item 1 business - `` competition , `` and part i , item 1a , risk factors - `` we operate in an increasingly competitive global environment . ” the online travel industry also saw the development of alternative business models and variations in the timing of payment by travelers and to suppliers , which in some cases place pressure on historical business models . in particular , the agency hotel model saw rapid adoption in europe . expedia group distributes both merchant ( expedia collect ) and agency ( hotel collect ) hotel offerings for our hotel supply partners through both agency-only contracts as well as our hybrid etp program , which offers travelers the choice of whether to pay expedia group at the time of booking or pay the hotel at the time of stay . intense competition also historically led to aggressive marketing efforts by the travel suppliers and intermediaries , and a meaningful unfavorable impact on our overall marketing efficiencies and operating margins . we manage our selling and marketing spending on a brand basis , making decisions in each applicable market that we think are appropriate based on the relative growth opportunity and the expected returns and the competitive environment . in certain cases , particularly in 37 emerging markets , we are pursuing and expect to continue to pursue long-term growth opportunities for which our marketing efficiency is less favorable than that for our consolidated business , but for which we still believe the opportunity to be attractive . in addition , the crowded online travel environment is now driving certain secondary and tertiary online travel companies to establish marketing agreements with global players in order to leverage distribution and technology capabilities while focusing resources on capturing traveler mind share . for more detail , see part i , item 1a , risk factors - `` we rely on the value of our brands , and the cost of maintaining and enhancing our brand awareness are increasing ” and “ our international operations involve additional risks and our exposure to these risks will increase as our business expands globally . ” lodging lodging includes hotel accommodations as well as alternative accommodations primarily made available through homeaway . as a percentage of our total worldwide revenue in 2018 , lodging accounted for 69 % . our room night growth has been healthy , with room nights 32 % in 2016 ( excluding elong ) , 16 % in 2017 and 13 % in 2018. adrs for rooms booked on expedia and homeaway websites increased 5 % in 2016 ( excluding elong ) due to the acquisition of homeaway , 3 % in 2017 and 5 % in 2018. hotel . we generate the majority of our revenue through the facilitation of hotel reservations ( stand-alone and package bookings ) . although our relationships with our hotel supply partners remained broadly stable in the past few years , as part of the global rollout of etp , we reduced negotiated economics in certain instances to compensate for hotel supply partners absorbing expenses such as credit card fees and customer service costs , which has negatively impacted the margin of revenue we earn per booking . in addition , as we continue to expand the breadth and depth of our global hotel offering , in some cases we have reduced our economics in various geographies based on local market conditions . these impacts are due to specific initiatives intended to drive greater global size and scale through faster overall room night growth . additionally , increased promotional activities such as growing loyalty programs contribute to declines in revenue per room night and profitability . since our hotel supplier agreements are generally negotiated on a percentage basis , any increase or decrease in adrs has an impact on the revenue we earn per room night . over the course of the last several years , occupancies and adrs in the lodging industry generally increased on a currency-neutral basis in a gradually improving overall travel environment . current occupancy rates for hotels in the united states remain high ; however , u.s. hotel supply has continued to grow , which may put additional pressure on adrs . in some international markets , hotel supply is being added at a faster rate as hotel owners and operators try to take advantage of opportunities in faster growing regions . companies like airbnb , homeaway and booking.com also added incremental global supply in the alternative accommodations space . in addition , while the global lodging industry remains very fragmented , there has been consolidation in the hotel space among chains as well as ownership groups . in the meantime , certain hotel chains have been focusing on driving direct bookings on their own websites and mobile applications by advertising lower rates than those available on third-party websites as well as incentives such as loyalty points , increased or exclusive product availability and complimentary wi-fi . story_separator_special_tag we record liabilities to address uncertain tax positions we have taken in previously filed tax returns or that we expect to take in a future tax return . the determination for required liabilities is based upon an analysis of each individual tax position , taking into consideration whether it is more likely than not that our tax position , based on technical merits , will be sustained upon examination . for those positions for which we conclude it is more likely than not it will be sustained , we recognize the largest amount of tax benefit that is greater than 50 percent likely of being realized upon ultimate settlement with the taxing authority . the difference between the amount recognized and the total tax position is recorded as a liability . the ultimate resolution of these tax positions may be greater or less than the liabilities recorded . the tax act was enacted in december 2017 and the tax act significantly changed u.s. tax law by , among other things , lowering u.s. corporate income tax rates , implementing a territorial tax system and imposing a one-time transition tax on deemed repatriated earnings of foreign subsidiaries . the tax act reduced the u.s. corporate income tax rate from 35 % to 21 % , effective january 1 , 2018. the sec staff issued staff accounting bulletin no . 118 ( “ sab 118 ” ) to address the application of u.s. gaap in situations when a registrant does not have the necessary information available , prepared , or analyzed ( including computations ) in reasonable detail to complete the accounting for certain income tax effects of the tax act and allows the registrant to record provisional amounts during a measurement period not to extend beyond one year of the enactment date . we applied the guidance in sab 118 when accounting for the enactment date effects of the tax act in 2017 and throughout 2018. at 41 december 31 , 2017 , we had not completed our accounting for all of the enactment date income tax effects of the tax act under accounting standards codification 740 , income taxes , for the following aspects : one-time transition tax and revaluation of deferred tax balances . as of december 31 , 2018 , we have now completed our accounting for all of the enactment date income tax effects of the tax act . based on our final analysis , changes in our estimates during 2018 relating to the one-time transition tax and revaluation of deferred tax balances were immaterial . the tax act created a new requirement that global intangible low-taxed income ( “ gilti ” ) earned by our foreign subsidiaries must be included in gross u.s. taxable income which we account for in the period incurred ( the `` period cost method `` ) . other long-term liabilities various legal and tax contingencies . we record liabilities to address potential exposures related to business and tax positions we have taken that have been or could be challenged by taxing authorities . in addition , we record liabilities associated with legal proceedings and lawsuits . these liabilities are recorded when the likelihood of payment is probable and the amounts can be reasonably estimated . the determination for required liabilities is based upon analysis of each individual tax issue , or legal proceeding , taking into consideration the likelihood of adverse judgments and the range of possible loss . in addition , our analysis may be based on discussions with outside legal counsel . the ultimate resolution of these potential tax exposures and legal proceedings may be greater or less than the liabilities recorded . occupancy and other taxes . some states and localities impose taxes ( e.g . transient occupancy , accommodation tax , sales tax and or business privilege tax ) on the use or occupancy of hotel accommodations or other traveler services . generally , hotels collect taxes based on the rate paid to the hotel and remit these taxes to the various tax authorities . when a customer books a room through one of our travel services , we collect a tax recovery charge from the customer which we pay to the hotel . we calculate the tax recovery charge by applying the applicable tax rate supplied to us by the hotels to the amount that the hotel has agreed to receive for the rental of the room by the consumer . in all but a limited number of jurisdictions , we do not collect or remit taxes , nor do we pay taxes to the hotel operator , on the portion of the customer payment we retain . some jurisdictions have questioned our practice in this regard . while the applicable tax provisions vary among the jurisdictions , we generally believe that we are not required to pay such taxes . more recently , a limited number of taxing jurisdictions have made similar claims against homeaway for tax amounts due on the rental amounts charged by owners of vacation rental properties or for taxes on homeaway 's services . homeaway is an intermediary between a traveler and a party renting a vacation property and we believe is similarly not liable for such taxes . we are engaged in discussions with tax authorities in various jurisdictions to resolve these issues . some tax authorities have brought lawsuits or have levied assessments asserting that we are required to collect and remit tax . the ultimate resolution in all jurisdictions can not be determined at this time . certain jurisdictions may require us to pay tax assessments , including occupancy and other transactional tax assessments , prior to contesting any such assessments . we have established a reserve for the potential settlement of issues related to hotel taxes for prior and current periods , consistent with applicable accounting principles and in light of all current facts and circumstances . a variety of factors could affect the amount of the

cash used in financing activities in 2018 primarily included cash paid to acquire shares of $ 923 million , including the repurchased shares under the authorizations discussed below , the $ 500 million long-term debt repayment and a $ 186 million cash dividend payment , partially offset by $ 166 million of proceeds from the exercise of options and employee stock purchase plans . cash provided by financing activities in 2017 primarily included $ 990 million of net proceeds from the issuance of 3.8 % notes as well as $ 229 million of proceeds from the exercise of options and employee stock purchase plans , partially offset by cash paid to acquire shares of $ 312 million and a $ 176 million cash dividend payment . cash used in financing activities in 2016 primarily included cash paid to acquire shares of $ 456 million , the repayment of $ 401 million of homeaway convertible notes and $ 150 million cash dividend payment , partially offset by $ 215 million of net proceeds from the initial public offering of trivago as well as $ 141 million of proceeds from the exercise of options and employee stock purchase plans . during 2012 , 2010 , and 2006 , our board ofdirectors , or the executive committee , acting on behalf of the board of directors , authorized a repurchase of up to 20 million outstanding shares of our common stock during each of the respective years , during 2015 authorized a repurchase of up to 10 million shares of our common stock , and during 2018 authorized a repurchase of up to 15 million shares of our common stock for a total of 85 million shares .


 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 financing activities in 2018 primarily included cash paid to acquire shares of $ 923 million , including the repurchased shares under the authorizations discussed below , the $ 500 million long-term debt repayment and a $ 186 million cash dividend payment , partially offset by $ 166 million of proceeds from the exercise of options and employee stock purchase plans . cash provided by financing activities in 2017 primarily included $ 990 million of net proceeds from the issuance of 3.8 % notes as well as $ 229 million of proceeds from the exercise of options and employee stock purchase plans , partially offset by cash paid to acquire shares of $ 312 million and a $ 176 million cash dividend payment . cash used in financing activities in 2016 primarily included cash paid to acquire shares of $ 456 million , the repayment of $ 401 million of homeaway convertible notes and $ 150 million cash dividend payment , partially offset by $ 215 million of net proceeds from the initial public offering of trivago as well as $ 141 million of proceeds from the exercise of options and employee stock purchase plans . during 2012 , 2010 , and 2006 , our board ofdirectors , or the executive committee , acting on behalf of the board of directors , authorized a repurchase of up to 20 million outstanding shares of our common stock during each of the respective years , during 2015 authorized a repurchase of up to 10 million shares of our common stock , and during 2018 authorized a repurchase of up to 15 million shares of our common stock for a total of 85 million shares .
```    
 Suspicious Activity Report : businesses such as airbnb , homeaway ( which expedia acquired in december 2015 ) and booking.com ( owned by booking holdings ) have emerged as the leaders , bringing incremental alternative accommodation and vacation rental inventory to the market . many other competitors , including vacation rental metasearch players , continue to emerge in this space , which is expected to continue to grow as a percentage of the global accommodation market . furthermore , we see increased interest in the online travel industry from search engine companies as evidenced by recent innovations including direct booking functionality and product enhancements by companies such as google . finally , traditional consumer ecommerce and group buying websites expanded their local offerings into the travel market by adding hotel offers to their websites . for additional detail regarding the competitive trends and risks we face , see part i item 1 business - `` competition , `` and part i , item 1a , risk factors - `` we operate in an increasingly competitive global environment . ” the online travel industry also saw the development of alternative business models and variations in the timing of payment by travelers and to suppliers , which in some cases place pressure on historical business models . in particular , the agency hotel model saw rapid adoption in europe . expedia group distributes both merchant ( expedia collect ) and agency ( hotel collect ) hotel offerings for our hotel supply partners through both agency-only contracts as well as our hybrid etp program , which offers travelers the choice of whether to pay expedia group at the time of booking or pay the hotel at the time of stay . intense competition also historically led to aggressive marketing efforts by the travel suppliers and intermediaries , and a meaningful unfavorable impact on our overall marketing efficiencies and operating margins . we manage our selling and marketing spending on a brand basis , making decisions in each applicable market that we think are appropriate based on the relative growth opportunity and the expected returns and the competitive environment . in certain cases , particularly in 37 emerging markets , we are pursuing and expect to continue to pursue long-term growth opportunities for which our marketing efficiency is less favorable than that for our consolidated business , but for which we still believe the opportunity to be attractive . in addition , the crowded online travel environment is now driving certain secondary and tertiary online travel companies to establish marketing agreements with global players in order to leverage distribution and technology capabilities while focusing resources on capturing traveler mind share . for more detail , see part i , item 1a , risk factors - `` we rely on the value of our brands , and the cost of maintaining and enhancing our brand awareness are increasing ” and “ our international operations involve additional risks and our exposure to these risks will increase as our business expands globally . ” lodging lodging includes hotel accommodations as well as alternative accommodations primarily made available through homeaway . as a percentage of our total worldwide revenue in 2018 , lodging accounted for 69 % . our room night growth has been healthy , with room nights 32 % in 2016 ( excluding elong ) , 16 % in 2017 and 13 % in 2018. adrs for rooms booked on expedia and homeaway websites increased 5 % in 2016 ( excluding elong ) due to the acquisition of homeaway , 3 % in 2017 and 5 % in 2018. hotel . we generate the majority of our revenue through the facilitation of hotel reservations ( stand-alone and package bookings ) . although our relationships with our hotel supply partners remained broadly stable in the past few years , as part of the global rollout of etp , we reduced negotiated economics in certain instances to compensate for hotel supply partners absorbing expenses such as credit card fees and customer service costs , which has negatively impacted the margin of revenue we earn per booking . in addition , as we continue to expand the breadth and depth of our global hotel offering , in some cases we have reduced our economics in various geographies based on local market conditions . these impacts are due to specific initiatives intended to drive greater global size and scale through faster overall room night growth . additionally , increased promotional activities such as growing loyalty programs contribute to declines in revenue per room night and profitability . since our hotel supplier agreements are generally negotiated on a percentage basis , any increase or decrease in adrs has an impact on the revenue we earn per room night . over the course of the last several years , occupancies and adrs in the lodging industry generally increased on a currency-neutral basis in a gradually improving overall travel environment . current occupancy rates for hotels in the united states remain high ; however , u.s. hotel supply has continued to grow , which may put additional pressure on adrs . in some international markets , hotel supply is being added at a faster rate as hotel owners and operators try to take advantage of opportunities in faster growing regions . companies like airbnb , homeaway and booking.com also added incremental global supply in the alternative accommodations space . in addition , while the global lodging industry remains very fragmented , there has been consolidation in the hotel space among chains as well as ownership groups . in the meantime , certain hotel chains have been focusing on driving direct bookings on their own websites and mobile applications by advertising lower rates than those available on third-party websites as well as incentives such as loyalty points , increased or exclusive product availability and complimentary wi-fi . story_separator_special_tag we record liabilities to address uncertain tax positions we have taken in previously filed tax returns or that we expect to take in a future tax return . the determination for required liabilities is based upon an analysis of each individual tax position , taking into consideration whether it is more likely than not that our tax position , based on technical merits , will be sustained upon examination . for those positions for which we conclude it is more likely than not it will be sustained , we recognize the largest amount of tax benefit that is greater than 50 percent likely of being realized upon ultimate settlement with the taxing authority . the difference between the amount recognized and the total tax position is recorded as a liability . the ultimate resolution of these tax positions may be greater or less than the liabilities recorded . the tax act was enacted in december 2017 and the tax act significantly changed u.s. tax law by , among other things , lowering u.s. corporate income tax rates , implementing a territorial tax system and imposing a one-time transition tax on deemed repatriated earnings of foreign subsidiaries . the tax act reduced the u.s. corporate income tax rate from 35 % to 21 % , effective january 1 , 2018. the sec staff issued staff accounting bulletin no . 118 ( “ sab 118 ” ) to address the application of u.s. gaap in situations when a registrant does not have the necessary information available , prepared , or analyzed ( including computations ) in reasonable detail to complete the accounting for certain income tax effects of the tax act and allows the registrant to record provisional amounts during a measurement period not to extend beyond one year of the enactment date . we applied the guidance in sab 118 when accounting for the enactment date effects of the tax act in 2017 and throughout 2018. at 41 december 31 , 2017 , we had not completed our accounting for all of the enactment date income tax effects of the tax act under accounting standards codification 740 , income taxes , for the following aspects : one-time transition tax and revaluation of deferred tax balances . as of december 31 , 2018 , we have now completed our accounting for all of the enactment date income tax effects of the tax act . based on our final analysis , changes in our estimates during 2018 relating to the one-time transition tax and revaluation of deferred tax balances were immaterial . the tax act created a new requirement that global intangible low-taxed income ( “ gilti ” ) earned by our foreign subsidiaries must be included in gross u.s. taxable income which we account for in the period incurred ( the `` period cost method `` ) . other long-term liabilities various legal and tax contingencies . we record liabilities to address potential exposures related to business and tax positions we have taken that have been or could be challenged by taxing authorities . in addition , we record liabilities associated with legal proceedings and lawsuits . these liabilities are recorded when the likelihood of payment is probable and the amounts can be reasonably estimated . the determination for required liabilities is based upon analysis of each individual tax issue , or legal proceeding , taking into consideration the likelihood of adverse judgments and the range of possible loss . in addition , our analysis may be based on discussions with outside legal counsel . the ultimate resolution of these potential tax exposures and legal proceedings may be greater or less than the liabilities recorded . occupancy and other taxes . some states and localities impose taxes ( e.g . transient occupancy , accommodation tax , sales tax and or business privilege tax ) on the use or occupancy of hotel accommodations or other traveler services . generally , hotels collect taxes based on the rate paid to the hotel and remit these taxes to the various tax authorities . when a customer books a room through one of our travel services , we collect a tax recovery charge from the customer which we pay to the hotel . we calculate the tax recovery charge by applying the applicable tax rate supplied to us by the hotels to the amount that the hotel has agreed to receive for the rental of the room by the consumer . in all but a limited number of jurisdictions , we do not collect or remit taxes , nor do we pay taxes to the hotel operator , on the portion of the customer payment we retain . some jurisdictions have questioned our practice in this regard . while the applicable tax provisions vary among the jurisdictions , we generally believe that we are not required to pay such taxes . more recently , a limited number of taxing jurisdictions have made similar claims against homeaway for tax amounts due on the rental amounts charged by owners of vacation rental properties or for taxes on homeaway 's services . homeaway is an intermediary between a traveler and a party renting a vacation property and we believe is similarly not liable for such taxes . we are engaged in discussions with tax authorities in various jurisdictions to resolve these issues . some tax authorities have brought lawsuits or have levied assessments asserting that we are required to collect and remit tax . the ultimate resolution in all jurisdictions can not be determined at this time . certain jurisdictions may require us to pay tax assessments , including occupancy and other transactional tax assessments , prior to contesting any such assessments . we have established a reserve for the potential settlement of issues related to hotel taxes for prior and current periods , consistent with applicable accounting principles and in light of all current facts and circumstances . a variety of factors could affect the amount of the

