Related Party Transactions - MEC (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Other current assets	$ 1,314	$ 1,355
Accounts payable	2,928	3,175
Related party, cash received (paid) for income taxes	1,580	1,479	$ 1,961
Other assets	3,011	3,170
Other long-term liabilities	5,917	6,166
MEC
Related Party Transaction [Line Items]
Expense reimbursement	88	94	78
Related party amounts of transaction	124	123	79
Purchases from related party	133	141	141
Other current assets	63	39
Accounts payable	375	543
Income tax receivable (payable), related parties current	1	(21)
Related party, cash received (paid) for income taxes	898	852	$ 840
Other assets	252	210
Other long-term liabilities	623	577
MEC | Affiliated entity
Related Party Transaction [Line Items]
Other current assets	19	9
Accounts payable	16	32
Other assets	70	82
Other long-term liabilities	$ 69	$ 55