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Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities (Effective Portion of Cash Flow Hedges) (Details) - Cash Flow Hedging - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (Losses) Reclassified from AOCL into Earnings, Effective Portion | $ (68) | $ (492) | $ (91)
Gain (Loss) on Derivative Instruments, Net, Pretax | (18) | 106 | (1)
Interest Rate Contract |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (Losses) Reclassified from AOCL into Earnings, Effective Portion | (72) | (419) | (75)
AOCI before tax expected increase (decrease) next 12 months | (13) |  |
Loss on discontinuation of cash flow hedge due to forecasted transaction probable of not occurring | (16) | 0 | (14)
Cross Currency Interest Rate Contract [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (Losses) Reclassified from AOCL into Earnings, Effective Portion | 0 | (15) | (5)
Foreign Exchange Contract [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (Losses) Reclassified from AOCL into Earnings, Effective Portion | 2 | (62) | (9)
Gain (Loss) on Derivative Instruments, Net, Pretax | 21 | 29 | 68
Commodity Contract [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (Losses) Reclassified from AOCL into Earnings, Effective Portion | 2 | 4 | (2)
Gain (Loss) on Derivative Instruments, Net, Pretax | $ (43) | $ (28) | $ (68)

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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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