Condensed Consolidated Comprehensive Income Statements (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,802	$ 1,543
Other comprehensive (loss) income before taxes:
Foreign currency translation	(8)	18
Unrealized (losses) gains on available-for-sale securities	(2)	7
Other comprehensive (loss) income before taxes	(10)	25
Income taxes (benefits) related to other comprehensive income items	(2)	5
Other comprehensive (loss) income	(8)	20
Comprehensive income	1,794	1,563
Comprehensive income attributable to noncontrolling interests	211	180
Comprehensive income attributable to HCA Healthcare, Inc.	$ 1,583	$ 1,383