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Accumulated Other Comprehensive Income (Loss) - Components of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Revenue | $ 2,106 | $ 1,759 | $ 3,901 | $ 3,500
Cost of revenue | 1,751 | 1,528 | 3,259 | 3,060
Tax effect | 5 | (17) | 8 | (30)
Net income (loss) | 24 | (75) | (44) | (197)
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Revenue |  | 1 | (1) | (4)
Cost of revenue | (1) | 8 | (5) | 4
Tax effect |  | (2) | 2 | 2
Net income (loss) | (1) | 7 | (4) | 2
Derivative Financial Instruments, Net of Tax [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Revenue |  | 1 | (1) | (4)
Cost of revenue | (1) | 8 | (5) | 4
Tax effect |  | (2) | 2 | 2
Net income (loss) | $ (1) | $ 7 | $ (4) | $ 2

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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