Investments in Unconsolidated Entities - Summarized Financial Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments in Unconsolidated Entities
Current assets	$ 4,916	$ 5,358
Current liabilities	5,005	5,893
Noncurrent liabilities	8,620	8,676
Revenues	48,712	57,342	$ 42,078
Operating income	1,501	1,284	842
Equity Method Investment, Nonconsolidated Investee
Investments in Unconsolidated Entities
Current assets	528	471
Noncurrent assets	7,194	7,579
Current liabilities	476	252
Noncurrent liabilities	5	8
Revenues	1,667	1,726	1,320
Operating income	921	1,004	505
Net income	$ 947	$ 1,011	$ 506