Fair Value Measurements - Roll Forward of Liabilities Measured at Fair Value on a Recurring Basis Using Unobservable Inputs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gains (losses) relating to Level 3 liabilities	$ (193)	$ (338)
Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	493	558
Total (decrease) increase in net realized/unrealized losses included in cost of products sold	191	326
Purchases	3	1
Sales	(36)	(38)
Settlements	(277)	(290)
Transfers into Level 3	35	14
Transfers out of Level 3	(5)	(74)
Balance at end of period	404	497
Level 3 | Inventory-  related  Payables
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	88	101
Total (decrease) increase in net realized/unrealized losses included in cost of products sold	(3)	(3)
Purchases	3	1
Sales	(36)	(38)
Settlements	0	0
Transfers into Level 3	0	1
Transfers out of Level 3	0	0
Balance at end of period	52	62
Level 3 | Commodity Derivative Contracts Losses
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	405	457
Total (decrease) increase in net realized/unrealized losses included in cost of products sold	194	329
Purchases	0	0
Sales	0	0
Settlements	(277)	(290)
Transfers into Level 3	35	13
Transfers out of Level 3	(5)	(74)
Balance at end of period	$ 352	$ 435