Note 13. Segment Information Reportable Segments We have two reportable segments, Wireless and Wireline, which we operate and manage as strategic business units and organize by products and services, and customer groups, respectively. We measure and evaluate our reportable segments based on segment operating income, consistent with the chief operating decision makers assessment of segment performance. Our segments and their principal activities consist of the following: Segment Description Wireless Wireless communications products and services include wireless voice and data services and equipment sales, which are provided to consumer, business and government customers across the U.S. Wireline Wirelines communications products and enhanced services include video and data services, corporate networking solutions, security and managed network services and local and long distance voice services. We provide these products and services to consumers in the U.S., as well as to carriers, businesses and government customers both in the U.S. and around the world. The Wireline segment is organized in four customer groups: Consumer Markets, which includes consumer retail customers; Enterprise Solutions, which includes large business customers, including multinational corporations, and federal government customers; Partner Solutions, which includes other carriers that use our facilities to provide services to their customers; and Business Markets, which includes U.S.-based small and medium business customers, state and local governments, and educational institutions. Corporate and other includes the results of our Media business, Verizon Media, which operated in 2018 under the "Oath" brand, our telematics business, branded Verizon Connect, and other businesses, investments in unconsolidated businesses, unallocated corporate expenses, pension and other employee benefit related costs and interest and financing expenses. Corporate and other also includes the historical results of divested businesses and other adjustments and gains and losses that are not allocated in assessing segment performance due to their nature. Although such transactions are excluded from the business segment results, they are included in reported consolidated earnings. Gains and losses from these transactions that are not individually significant are included in segment results as these items are included in the chief operating decision makers assessment of segment performance. In November 2018, we announced a strategic reorganization of our business. We are modifying our internal and external reporting processes, systems and internal controls to accommodate the new structure and expect to transition to the new segment reporting structure during the second quarter of 2019. We continue to report operating results to our chief operating decision maker under our current operating segments. We completed our acquisition of Yahoo's operating business on June 13, 2017. In May 2017, we completed the Data Center Sale, where we sold 23 customer-facing data center sites in the U.S. and Latin America to Equinix. The results of operations for this divestiture and other insignificant transactions are included within Corporate and other for all periods presented to reflect comparable segment operating results consistent with the information regularly reviewed by our chief operating decision maker. In addition, Corporate and other includes the results of our telematics businesses for all periods presented, which were reclassified from our Wireline segment effective April 1, 2016. The impact of this reclassification was insignificant to our consolidated financial statements and our segment results of operations. The reconciliation of segment operating revenues and expenses to consolidated operating revenues and expenses below includes the effects of special items that management does not consider in assessing segment performance, primarily because of their nature. We have adjusted prior period consolidated and segment information, where applicable, to conform to the current period presentation. On January 1, 2018, we adopted ASU 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." Components other than the service component of net periodic pension cost and periodic postretirement benefit cost (income), inclusive of the mark-to-market pension and benefit remeasurements, have been reclassified from operating to non-operating charges (benefits) in our consolidated statements of income. The adoption of ASU 2017-07 did not change how we present our segment results. The following table provides operating financial information for our two reportable segments: (dollars in millions) 2018 Wireless Wireline Total Reportable Segments External Operating Revenues Service $ 62,936 $  $ 62,936 Equipment 22,258  22,258 Other 6,201  6,201 Consumer Markets  12,586 12,586 Enterprise Solutions  8,837 8,837 Partner Solutions  3,685 3,685 Business Markets  3,397 3,397 Other  242 242 Intersegment revenues 339 1,013 1,352 Total operating revenues 91,734 29,760 121,494 Cost of services 9,251 17,701 26,952 Wireless cost of equipment 23,323  23,323 Selling, general and administrative expense 16,604 6,151 22,755 Depreciation and amortization expense 9,736 6,181 15,917 Total operating expenses 58,914 30,033 88,947 Operating income (loss) $ 32,820 $ (273 ) $ 32,547 Assets $ 213,290 $ 94,799 $ 308,089 Property, plant and equipment, net 42,749 43,350 86,099 Capital expenditures 8,486 6,255 14,741 (dollars in millions) 2017 Wireless Wireline Total Reportable Segments External Operating Revenues Service $ 62,972 $  $ 62,972 Equipment 18,889  18,889 Other 5,270  5,270 Consumer Markets  12,775 12,775 Enterprise Solutions  9,165 9,165 Partner Solutions  3,969 3,969 Business Markets  3,585 3,585 Other  234 234 Intersegment revenues 380 952 1,332 Total operating revenues 87,511 30,680 118,191 Cost of services 8,886 17,922 26,808 Wireless cost of equipment 22,147  22,147 Selling, general and administrative expense 17,876 6,274 24,150 Depreciation and amortization expense 9,395 6,104 15,499 Total operating expenses 58,304 30,300 88,604 Operating income $ 29,207 $ 380 $ 29,587 Assets $ 235,873 $ 75,282 $ 311,155 Property, plant and equipment, net 43,935 41,351 85,286 Capital expenditures 10,310 5,339 15,649 (dollars in millions) 2016 Wireless Wireline Total Reportable Segments External Operating Revenues Service $ 66,362 $  $ 66,362 Equipment 17,511  17,511 Other 4,915  4,915 Consumer Markets  12,751 12,751 Enterprise Solutions  9,162 9,162 Partner Solutions  3,976 3,976 Business Markets  3,356 3,356 Other  314 314 Intersegment revenues 398 951 1,349 Total operating revenues 89,186 30,510 119,696 Cost of services 9,031 18,353 27,384 Wireless cost of equipment 22,238  22,238 Selling, general and administrative expense 18,881 6,476 25,357 Depreciation and amortization expense 9,183 5,975 15,158 Total operating expenses 59,333 30,804 90,137 Operating income (loss) $ 29,853 $ (294 ) $ 29,559 Assets $ 211,345 $ 66,679 $ 278,024 Property, plant and equipment, net 42,898 40,205 83,103 Capital expenditures 11,240 4,504 15,744 Reconciliation to Consolidated Financial Information A reconciliation of the reportable segment operating revenues to consolidated operating revenues is as follows: (dollars in millions) Years Ended December 31, 2018 2017 2016 Operating Revenues Total reportable segments $ 121,494 $ 118,191 $ 119,696 Corporate and other 10,942 9,019 5,663 Reconciling items: Operating results from divested businesses (Note 3)  368 2,115 Eliminations (1,573 ) (1,544 ) (1,494 ) Consolidated operating revenues $ 130,863 $ 126,034 $ 125,980 Fios revenues are included within our Wireline segment and amounted to approximately $11.9 billion , $11.7 billion , and $11.2 billion for the years ended December 31, 2018 , 2017 and 2016 , respectively. A reconciliation of the total of the reportable segments operating income to consolidated income before provision for income taxes is as follows: (dollars in millions) Years Ended December 31, 2018 2017 2016 Operating Income Total reportable segments $ 32,547 $ 29,587 $ 29,559 Corporate and other (1,694 ) (1,492 ) (1,455 ) Reconciling items: Severance charges (Note 11) (2,157 ) (497 ) (421 ) Other components of net periodic pension and benefit (charges) credits (Note 11) (823 ) (800 ) (578 ) Net gain on sale of divested businesses (Note 3)  1,774 1,007 Acquisition and integration related charges (Note 3) (553 ) (884 )  Gain on spectrum license transaction (Note 3)  270 142 Operating results from divested businesses  149 995 Oath goodwill impairment (4,591 )  Product realignment charges (451 ) (682 )  Consolidated operating income 22,278 27,425 29,249 Equity in losses of unconsolidated businesses (186 ) (77 ) (98 ) Other income (expense), net 2,364 (2,021 ) (3,789 ) Interest expense (4,833 ) (4,733 ) (4,376 ) Income Before (Provision) Benefit For Income Taxes $ 19,623 $ 20,594 $ 20,986 A reconciliation of the total of the reportable segments assets to consolidated assets is as follows: (dollars in millions) At December 31, 2018 2017 Assets Total reportable segments $ 308,089 $ 311,155 Corporate and other 244,695 239,040 Eliminations (287,955 ) (293,052 ) Total consolidated $ 264,829 $ 257,143 No single customer accounted for more than 10% of our total operating revenues during the years ended December 31, 2018 , 2017 and 2016 . International operating revenues and long-lived assets are not significant.