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Financial Instruments, Derivatives and Hedging Activities - Gain (Losses) Recognized in Income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Hedging relationships |  |  |  |
Loss expected to be reclassified into earnings during the next twelve months, net of tax |  |  | $ (36) |
Loss expected to be reclassified into earnings during the next twelve months, income tax effect |  |  | 13 |
Fair Value Hedging | Interest Rate Contracts | Financing costs, net |  |  |  |
Hedging relationships |  |  |  |
Gains (losses) recognized in income, Hedging instruments | $ (4) | $ 3 | (1) | $ 3
Gains (losses) recognized in income, Hedged item | $ 4 | $ (3) | $ 1 | $ (3)

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- Definition Represents the estimated amount of income tax effect on existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References No definition available. + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986 + Details
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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