Schedule I - Condensed Financial Information of Parent - Condensed Statements of Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Income Statements, Captions [Line Items]
Revenues	$ 21,365	$ 17,090	$ 10,958
Operating expenses:
Total operating expenses	15,530	11,988	8,462
Operating income	5,835	5,102	2,496
Interest expense	(897)	(391)	(334)
Other income (expense), net	543	(788)	(697)
Income before income taxes	5,481	3,923	1,465
Income tax expense	1,192	865	300
Net income	4,289	3,058	1,165
Other comprehensive loss, net of tax
Foreign currency translation adjustments	(63)	(111)	(57)
Net unrealized gains (losses) on available-for-sale securities	7	(12)	31
Total other comprehensive loss, net of tax	(56)	(123)	(26)
Comprehensive income	4,233	2,935	1,139
Parent Company
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0
Operating expenses:
Total operating expenses	299	225	201
Operating income	(299)	(225)	(201)
Interest expense	(495)	(284)	(319)
Other income (expense), net	0	116	(121)
Equity in earnings (losses) of subsidiaries, net of tax	5,074	3,442	1,743
Income before income taxes	4,280	3,049	1,102
Income tax expense	(9)	(9)	(63)
Net income	4,289	3,058	1,165
Other comprehensive loss, net of tax
Foreign currency translation adjustments	(63)	(111)	(57)
Net unrealized gains (losses) on available-for-sale securities	7	(12)	31
Total other comprehensive loss, net of tax	(56)	(123)	(26)
Comprehensive income	$ 4,233	$ 2,935	$ 1,139