Fair Value of Financial Instruments - Assets and Liabilities Measured and Recorded at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in securities (classified within other current and non-current assets)	$ 33	$ 28
Measured using net asset value practical expedient:
Total assets	3,175	3,433
Derivative liabilities:
Total liabilities	3,222	3,177
Derivative asset, NPNS	622	997
Derivative liabilities, NPNS	138	227
Interest rate contracts
Derivative assets:
Derivative assets	0	9
Derivative liabilities:
Derivative liabilities	4	3
Foreign exchange contract
Derivative assets:
Derivative assets	3	22
Derivative liabilities:
Derivative liabilities	3	1
Commodity contracts
Derivative assets:
Derivative assets	3,754	4,365
Derivative assets, excluding NPNS elected	3,132	3,368
Derivative liabilities:
Derivative liabilities	3,070	3,197
Derivative liabilities, excluding NPNS elected	2,932	2,970
Consumer Financing Program
Derivative assets:
Derivative assets		(203)
Derivative liabilities:
Derivative liabilities	283	203
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
Measured using net asset value practical expedient:
Total assets	267	528
Derivative liabilities:
Total liabilities	352	432
Level 1 | Interest rate contracts
Derivative assets:
Derivative assets	0	0
Derivative liabilities:
Derivative liabilities	0
Level 1 | Foreign exchange contract
Derivative assets:
Derivative assets	0	0
Derivative liabilities:
Derivative liabilities	0	0
Level 1 | Commodity contracts
Derivative assets:
Derivative assets, excluding NPNS elected	267	528
Derivative liabilities:
Derivative liabilities, excluding NPNS elected	352	432
Level 1 | Consumer Financing Program
Derivative liabilities:
Derivative liabilities	0	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)	33	28
Measured using net asset value practical expedient:
Total assets	2,588	2,704
Derivative liabilities:
Total liabilities	2,384	2,386
Level 2 | Interest rate contracts
Derivative assets:
Derivative assets	0	9
Derivative liabilities:
Derivative liabilities	4	3
Level 2 | Foreign exchange contract
Derivative assets:
Derivative assets	3	22
Derivative liabilities:
Derivative liabilities	3	1
Level 2 | Commodity contracts
Derivative assets:
Derivative assets, excluding NPNS elected	2,552	2,645
Derivative liabilities:
Derivative liabilities, excluding NPNS elected	2,377	2,382
Level 2 | Consumer Financing Program
Derivative liabilities:
Derivative liabilities	0	0
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
Measured using net asset value practical expedient:
Total assets	313	195
Derivative liabilities:
Total liabilities	486	359
Level 3 | Interest rate contracts
Derivative assets:
Derivative assets	0	0
Derivative liabilities:
Derivative liabilities	0
Level 3 | Foreign exchange contract
Derivative assets:
Derivative assets	0	0
Derivative liabilities:
Derivative liabilities	0	0
Level 3 | Commodity contracts
Derivative assets:
Derivative assets	313	195
Derivative assets, excluding NPNS elected	313	195
Derivative liabilities:
Derivative liabilities	486	359
Derivative liabilities, excluding NPNS elected	203	156
Level 3 | Consumer Financing Program
Derivative liabilities:
Derivative liabilities	283	203
Net Asset Value | Equity securities
Measured using net asset value practical expedient:
Equity securities	$ 7	$ 6