Condensed Consolidated Comprehensive Income Statements (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,543	$ 1,465
Other comprehensive income (loss) before taxes:
Foreign currency translation	18	(34)
Unrealized gains (losses) on available-for-sale securities	7	(26)
Defined benefit plans	0	0
Pension costs included in salaries and benefits	0	2
Total defined benefit plans	0	2
Change in fair value of derivative financial instruments	0	4
Interest costs included in interest expense	0	2
Total change in fair value of derivative financial instruments	0	6
Other comprehensive income (loss) before taxes	25	(52)
Income taxes (benefits) related to other comprehensive income items	5	(9)
Other comprehensive income (loss)	20	(43)
Comprehensive income	1,563	1,422
Comprehensive income attributable to noncontrolling interests	180	192
Comprehensive income attributable to HCA Healthcare, Inc.	$ 1,383	$ 1,230