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Financial Instruments - Economic Hedges (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss related to interest rate swaps | $ 0 | $ 0 | $ 0 | $ (103) | $ 0 | $ (111) | $ 0 | $ 0 |  |  |
Not Designated as Hedging Instrument, Economic Hedge |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss related to interest rate swaps |  |  |  |  |  |  |  |  | $ (30) | $ 173 | $ 234
Not Designated as Hedging Instrument, Economic Hedge | Currency exchange contracts | Intercompany loans and forecasted interest payments | Interest and other expense, net |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss related to interest rate swaps |  |  |  |  |  |  |  |  | (70) | 100 | 98
Not Designated as Hedging Instrument, Economic Hedge | Currency exchange contracts | Forecasted transactions | Interest and other expense, net |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss related to interest rate swaps |  |  |  |  |  |  |  |  | (4) | (3) | (4)
Not Designated as Hedging Instrument, Economic Hedge | Currency exchange contracts | Forecasted transactions | Cost of sales |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss related to interest rate swaps |  |  |  |  |  |  |  |  | 41 | 17 | 103
Not Designated as Hedging Instrument, Economic Hedge | Currency exchange contracts | Forecasted transactions | Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss related to interest rate swaps |  |  |  |  |  |  |  |  | (1) | (8) | (3)
Not Designated as Hedging Instrument, Economic Hedge | Commodity contracts | Cost of sales |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss related to interest rate swaps |  |  |  |  |  |  |  |  | $ 4 | $ 67 | $ 40

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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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