Condensed Consolidated Comprehensive Income Statements (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,687	$ 1,412	$ 3,489	$ 2,955
Other comprehensive income (loss) before taxes:
Foreign currency translation	1	20	(7)	38
Unrealized (losses) gains on available-for-sale securities	(1)	(5)	(3)	2
Other comprehensive income (loss) before taxes	0	15	(10)	40
Income taxes (benefits) related to other comprehensive income items	0	1	(2)	6
Other comprehensive income (loss)	0	14	(8)	34
Comprehensive income	1,687	1,426	3,481	2,989
Comprehensive income attributable to noncontrolling interests	226	219	437	399
Comprehensive income attributable to HCA Healthcare, Inc.	$ 1,461	$ 1,207	$ 3,044	$ 2,590