Collectively Significant Operating Unconsolidated Subsidiaries (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenues	$ 180,516	$ 174,078	$ 160,401
Net income	6,746	5,415	8,489
Balance Sheet [Abstract]
Total assets	143,932	154,889
Total liabilities	98,981	107,705
Operating joint ventures
Equity Method Investment, Summarized Financial Information [Abstract]
Equity method investments, carrying value	1,100	1,200
Operating joint ventures
Income Statement [Abstract]
Revenues	4,208	3,400	2,457
Net income	(15)	200	$ 401
Balance Sheet [Abstract]
Total assets	20,676	18,942
Total liabilities	$ 18,441	$ 16,510