FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Accounted for at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Assets:
Readily marketable inventories (Note 5)	$ 11,514	$ 5,224
Unrealized gain on derivative contracts	2,183	1,286
Liabilities:
Trade accounts payable	750	388
Unrealized loss on derivative contracts	1,601	1,082
Other Noncurrent Assets
Liabilities:
Unrealized gain on derivative contracts	32	0
Other Noncurrent Liabilities
Liabilities:
Unrealized loss on derivative contracts	124	232
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets:
Cash equivalents	376	128
Readily marketable inventories (Note 5)	11,514	5,224
Trade accounts receivable	0	0
Total assets	15,639	7,038
Liabilities:
Trade accounts payable	750	388
Total liabilities	2,475	1,702
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Economic hedges
Assets:
Other	1,534	400
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Interest rate | Hedge accounting
Assets:
Unrealized gain on derivative contracts	40	15
Liabilities:
Unrealized loss on derivative contracts	129	258
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Foreign exchange | Hedge accounting
Assets:
Unrealized gain on derivative contracts	540	422
Liabilities:
Unrealized loss on derivative contracts	444	494
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Commodities | Economic hedges
Assets:
Unrealized gain on derivative contracts	1,570	765
Liabilities:
Unrealized loss on derivative contracts	1,062	484
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Freight | Economic hedges
Assets:
Unrealized gain on derivative contracts	32	40
Liabilities:
Unrealized loss on derivative contracts	46	38
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Energy | Economic hedges
Assets:
Unrealized gain on derivative contracts	32	42
Liabilities:
Unrealized loss on derivative contracts	40	38
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Credit | Economic hedges
Assets:
Unrealized gain on derivative contracts	1	2
Liabilities:
Unrealized loss on derivative contracts	1	2
Assets and Liabilities Measured at Fair Value on a Recurring Basis | Equity | Economic hedges
Liabilities:
Unrealized loss on derivative contracts	3	0
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets:
Cash equivalents	1	86
Readily marketable inventories (Note 5)	0	0
Trade accounts receivable	0	0
Total assets	1,349	575
Liabilities:
Trade accounts payable	0	0
Total liabilities	241	147
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Economic hedges
Assets:
Other	1,108	325
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Interest rate | Hedge accounting
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Foreign exchange | Hedge accounting
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Commodities | Economic hedges
Assets:
Unrealized gain on derivative contracts	176	82
Liabilities:
Unrealized loss on derivative contracts	152	71
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Freight | Economic hedges
Assets:
Unrealized gain on derivative contracts	32	40
Liabilities:
Unrealized loss on derivative contracts	46	38
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Energy | Economic hedges
Assets:
Unrealized gain on derivative contracts	32	42
Liabilities:
Unrealized loss on derivative contracts	40	38
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Credit | Economic hedges
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 1 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Equity | Economic hedges
Liabilities:
Unrealized loss on derivative contracts	3	0
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets:
Cash equivalents	375	42
Readily marketable inventories (Note 5)	9,532	4,805
Trade accounts receivable	0	0
Total assets	12,060	5,910
Liabilities:
Trade accounts payable	592	326
Total liabilities	1,888	1,389
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Economic hedges
Assets:
Other	426	75
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Interest rate | Hedge accounting
Assets:
Unrealized gain on derivative contracts	40	15
Liabilities:
Unrealized loss on derivative contracts	129	258
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Foreign exchange | Hedge accounting
Assets:
Unrealized gain on derivative contracts	540	422
Liabilities:
Unrealized loss on derivative contracts	444	494
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Commodities | Economic hedges
Assets:
Unrealized gain on derivative contracts	1,146	549
Liabilities:
Unrealized loss on derivative contracts	722	309
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Freight | Economic hedges
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Energy | Economic hedges
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Credit | Economic hedges
Assets:
Unrealized gain on derivative contracts	1	2
Liabilities:
Unrealized loss on derivative contracts	1	2
Level 2 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Equity | Economic hedges
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets:
Cash equivalents	0	0
Readily marketable inventories (Note 5)	1,982	419
Trade accounts receivable	0	0
Total assets	2,230	553
Liabilities:
Trade accounts payable	158	62
Total liabilities	346	166
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Economic hedges
Assets:
Other	0	0
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Interest rate | Hedge accounting
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Foreign exchange | Hedge accounting
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Commodities | Economic hedges
Assets:
Unrealized gain on derivative contracts	248	134
Liabilities:
Unrealized loss on derivative contracts	188	104
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Freight | Economic hedges
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Energy | Economic hedges
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Credit | Economic hedges
Assets:
Unrealized gain on derivative contracts	0	0
Liabilities:
Unrealized loss on derivative contracts	0	0
Level 3 | Assets and Liabilities Measured at Fair Value on a Recurring Basis | Equity | Economic hedges
Liabilities:
Unrealized loss on derivative contracts	$ 0	$ 0