Related Party Transactions - MEC (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Other current assets	$ 1,355	$ 1,345
Accounts payable	3,175	2,679
Related party, cash received (paid) for income taxes	1,479	1,961	$ 1,441
Other assets	3,170	3,290
Other long-term liabilities	6,166	4,706
MEC
Related Party Transaction [Line Items]
Expense reimbursement	94	78	66
Related party amounts of transaction	123	79	72
Purchases from related party	141	141	132
Other current assets	39	66
Accounts payable	543	536
Income tax receivable (payable), related parties current	(21)	42
Related party, cash received (paid) for income taxes	852	840	$ 746
Other assets	210	165
Other long-term liabilities	577	485
MEC | Affiliated entity
Related Party Transaction [Line Items]
Other current assets	9	9
Accounts payable	32	22
Other assets	82	79
Other long-term liabilities	$ 55	$ 40