NOTE 23SEGMENT REPORTING We disclose the results of each of our reportable segments in accordance with ASC 280, Segment Reporting . Each of the reportable segments is separately managed by a senior executive who is a member of our Executive Committee (EXCOM). Our EXCOM is led by our Chief Executive Officer, who is the chief operating decision maker (CODM). Discrete financial information is available for each of the segments, and the EXCOM uses the operating results of each of the reportable segments for performance evaluation and resource allocation. Upon completion of the Combination, during the second quarter of 2018, we reorganized our operations around five operating segments. This reorganization is intended to better serve our global clients, leverage our workforce, help streamline operations, and provide enhanced growth opportunities. Our five operating groups are: NCSA; EARC; MENA; APAC; and Technology. We also report certain corporate and other non-operating activities under the heading Corporate and Other. Corporate and Other primarily reflects c orporate expenses, certain centrally managed initiatives (such as restructuring charges), impairments, year-end mark-to-market pension actuarial gains and losses, costs not attributable to a particular reportable segment and unallocated direct operating expenses associated with the underutilization of vessels, f abrication facilities and engineering resources . I ntersegment sales are recorded at prices we generally establish by reference to similar transactions with unaffiliated customers and were not material during the three and six months ended June 30 , 2019 or 2018 and are eliminated upon consolidation . Operating Information by Segment Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 (In millions) (In millions) Revenues: NCSA $ 1,259 $ 995 $ 2,639 $ 1,093 EARC 192 58 340 74 MENA 399 469 779 814 APAC 133 108 288 257 Technology 154 105 302 105 Total revenues $ 2,137 $ 1,735 $ 4,348 $ 2,343 Operating (loss) income: (1) Segment operating income (loss): NCSA $ 15 $ 49 $ 88 $ 51 EARC 4 (8 ) 11 (11 ) MENA 29 97 95 167 APAC 2 43 15 116 Technology 35 25 70 25 Total segment operating income 85 206 279 348 Corporate (146 ) (157 ) (327 ) (235 ) Total operating (loss) income $ (61 ) $ 49 $ (48 ) $ 113 Depreciation and amortization: NCSA $ 14 $ 9 $ 31 $ 16 EARC 3 3 7 3 MENA 13 10 25 16 APAC 2 2 7 9 Technology 18 14 37 14 Corporate 11 20 30 22 Total depreciation and amortization $ 61 $ 58 $ 137 $ 80 Capital expenditures (2) : NCSA $ 2 $ - $ 5 $ 2 EARC 1 - 1 - MENA 4 4 8 7 APAC - 2 5 5 Technology - - - - Corporate 8 18 14 29 Total Capital expenditures $ 15 $ 24 $ 33 $ 43 Assets by Segment June 30, 2019 December 31, 2018 (In millions) Segment assets: NCSA $ 3,489 $ 3,257 EARC 1,238 1,169 MENA 1,583 1,472 APAC 1,200 1,147 Technology 2,726 2,752 Corporate (3) (238 ) (357 ) Total assets $ 9,998 $ 9,440 (1) NCSA operating results for the three and six months ended June 30, 2019 included $101 million loss on the sale of APP, discussed in Note 4, Disposition of Alloy Piping Products, LLC. Corporate operating results for the three and six months ended June 30, 2019 included:  $20 million and $89 million of restructuring and integration costs, respectively; and  $11 million and $15 million of transaction costs, respectively. Corporate operating results for the six months ended June 30, 2018 included:  $63 million and $75 million of restructuring and integration costs, respectively; and  $37 million and $40 million of transaction costs, respectively. See Note 11, Restructuring and Integration Costs and Transaction Costs, for further discussion. (2) Capital expenditures reported represent cash purchases. At June 30, 2019 and 2018, we had approximately $47 million and $14 million, respectively, of accrued and unpaid capital expenditures reported in property, plant and equipment and accrued liabilities. (3) Corporate assets at June 30, 2019 and December 31, 2018 include negative cash balances associated with our international cash pooling program.