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Fair Value of Financial Instruments - Assets and Liabilities Measured and Recorded at Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in securities (classified within other current and non-current assets)	$ 19	$ 19
Other trust fund investments (classified within other non-current assets):
U.S. government and federal agency obligations	1	1
Measured using net asset value practical expedient:
Total assets	8,655	12,858
Derivative liabilities:
Derivative contracts	6,243	8,441
Foreign exchange
Derivative assets:
Derivative contracts	15	18
Derivative liabilities:
Derivative contracts	1	2
Commodity contracts
Derivative assets:
Derivative contracts	7,725	11,976
Derivative liabilities:
Derivative contracts	6,116	8,439
Interest rate contracts
Derivative assets:
Derivative contracts	10
Derivative liabilities:
Derivative contracts	15
Consumer Financing Program
Derivative liabilities:
Derivative contracts	111
Cash and cash equivalents
Nuclear trust fund investments:
Nuclear trust fund investments	13	15
U.S. government and federal agency obligations
Nuclear trust fund investments:
Nuclear trust fund investments	98	86
Federal agency mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	101	101
Commercial mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	34	35
Corporate debt securities
Nuclear trust fund investments:
Nuclear trust fund investments	113	114
Equity securities
Nuclear trust fund investments:
Nuclear trust fund investments	430	403
Measured using net asset value practical expedient:
Equity securities	6	6
Foreign government fixed income securities
Nuclear trust fund investments:
Nuclear trust fund investments	1	1
Equity securities — nuclear trust fund investments
Measured using net asset value practical expedient:
Equity securities	89	83
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in securities (classified within other current and non-current assets)	0	0
Other trust fund investments (classified within other non-current assets):
U.S. government and federal agency obligations	1	1
Measured using net asset value practical expedient:
Total assets	1,872	2,432
Derivative liabilities:
Derivative contracts	1,422	1,244
Level 1 | Foreign exchange
Derivative assets:
Derivative contracts	0	0
Derivative liabilities:
Derivative contracts	0	0
Level 1 | Commodity contracts
Derivative assets:
Derivative contracts	1,331	1,929
Derivative liabilities:
Derivative contracts	1,422	1,244
Level 1 | Interest rate contracts
Derivative assets:
Derivative contracts	0
Derivative liabilities:
Derivative contracts	0
Level 1 | Consumer Financing Program
Derivative liabilities:
Derivative contracts	0
Level 1 | Cash and cash equivalents
Nuclear trust fund investments:
Nuclear trust fund investments	13	15
Level 1 | U.S. government and federal agency obligations
Nuclear trust fund investments:
Nuclear trust fund investments	96	84
Level 1 | Federal agency mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 1 | Commercial mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 1 | Corporate debt securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 1 | Equity securities
Nuclear trust fund investments:
Nuclear trust fund investments	430	403
Level 1 | Foreign government fixed income securities
Nuclear trust fund investments:
Nuclear trust fund investments	1	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in securities (classified within other current and non-current assets)	19	19
Other trust fund investments (classified within other non-current assets):
U.S. government and federal agency obligations	0	0
Measured using net asset value practical expedient:
Total assets	5,654	9,086
Derivative liabilities:
Derivative contracts	4,147	6,451
Level 2 | Foreign exchange
Derivative assets:
Derivative contracts	15	18
Derivative liabilities:
Derivative contracts	1	2
Level 2 | Commodity contracts
Derivative assets:
Derivative contracts	5,360	8,796
Derivative liabilities:
Derivative contracts	4,131	6,449
Level 2 | Interest rate contracts
Derivative assets:
Derivative contracts	10
Derivative liabilities:
Derivative contracts	15
Level 2 | Consumer Financing Program
Derivative liabilities:
Derivative contracts	0
Level 2 | Cash and cash equivalents
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 2 | U.S. government and federal agency obligations
Nuclear trust fund investments:
Nuclear trust fund investments	2	2
Level 2 | Federal agency mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	101	101
Level 2 | Commercial mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	34	35
Level 2 | Corporate debt securities
Nuclear trust fund investments:
Nuclear trust fund investments	113	114
Level 2 | Equity securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 2 | Foreign government fixed income securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	1
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in securities (classified within other current and non-current assets)	0	0
Other trust fund investments (classified within other non-current assets):
U.S. government and federal agency obligations	0	0
Derivative assets:
Derivative contracts	1,034	1,251
Measured using net asset value practical expedient:
Total assets	1,034	1,251
Derivative liabilities:
Derivative contracts	674	746
Level 3 | Foreign exchange
Derivative assets:
Derivative contracts	0	0
Derivative liabilities:
Derivative contracts	0	0
Level 3 | Commodity contracts
Derivative assets:
Derivative contracts	1,034	1,251
Derivative liabilities:
Derivative contracts	563	746
Level 3 | Interest rate contracts
Derivative assets:
Derivative contracts	0
Derivative liabilities:
Derivative contracts	0
Level 3 | Consumer Financing Program
Derivative liabilities:
Derivative contracts	111
Level 3 | Cash and cash equivalents
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 3 | U.S. government and federal agency obligations
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 3 | Federal agency mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 3 | Commercial mortgage-backed securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 3 | Corporate debt securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 3 | Equity securities
Nuclear trust fund investments:
Nuclear trust fund investments	0	0
Level 3 | Foreign government fixed income securities
Nuclear trust fund investments:
Nuclear trust fund investments	$ 0	$ 0

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