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Derivative Instruments and Hedging Activities - Part 3 (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | $ (32) | $ (103) | $ (62) | $ (143)
Gain Loss By Type Of Derivative Tables |  |  |  |
Gain (Losses) Recognized in AOCL | (223) | (132) | 87 | (713)
Cash Flow Hedging [Member] | Commodity Contract [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | (1) | 2 | (3) | 2
Gain Loss By Type Of Derivative Tables |  |  |  |
Gain (Losses) Recognized in AOCL | 17 | 4 | 17 | 4
Cash Flow Hedging [Member] | Foreign currency derivatives [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | (2) | (5) | (5) | (13)
Gain Loss By Type Of Derivative Tables |  |  |  |
Gain (Losses) Recognized in AOCL | (19) | (2) | (20) | (14)
Cash Flow Hedging [Member] | Cross currency derivatives [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | (1) | 2 | (2) | (15)
Gain Loss By Type Of Derivative Tables |  |  |  |
Gain (Losses) Recognized in AOCL | 1 | 3 | 3 | (36)
Cash Flow Hedging [Member] | Interest Rate Contract [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Accumulated Other Comprehensive Income Loss Before Tax Expected Increase Decrease Next Twelve Months | (92) |  | (92) |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | (28) | (102) | (52) | (117)
Gain Loss By Type Of Derivative Tables |  |  |  |
Gain (Losses) Recognized in AOCL | (222) | (137) | 87 | (667)
Loss on Cash Flow Hedges due to impairment of assets | $ (9) | $ 0 | $ (13) | $ 0
Fair Value Hedging |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net | 3 | — | 3 | —
Fair Value Hedging | Other Contract [Member] |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net | 35 | — | 35 | —
Not Designated as Hedging Instrument [Member] |  |  |  |
Gain Loss By Type Of Derivative Tables |  |  |  |
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) | $ 10 | $ (18) | $ 20 | $ 28
Not Designated as Hedging Instrument [Member] | Other Contract [Member] |  |  |  |
Gain Loss By Type Of Derivative Tables |  |  |  |
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) | 12 | 0 | (81) | 6
Not Designated as Hedging Instrument [Member] | Foreign currency derivatives [Member] |  |  |  |
Gain Loss By Type Of Derivative Tables |  |  |  |
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) | 7 | (18) | (4) | 22
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] |  |  |  |
Gain Loss By Type Of Derivative Tables |  |  |  |
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) | $ (9) | $ 0 | $ 105 | $ 0
Designated as Hedging Instruments [Member] | Fair Value Hedging |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |
Derivative Instruments in Hedges, at Fair Value, Net | (32) | — | (32) | —

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