Condensed Consolidated Comprehensive Income Statements (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,412	$ 1,379	$ 2,955	$ 2,844
Other comprehensive income (loss) before taxes:
Foreign currency translation	20	(71)	38	(105)
Unrealized (losses) gains on available-for-sale securities	(5)	(16)	2	(42)
Losses included in other operating expenses	0	1	0	1
Total Unrealized losses on available-for-sale securities	(5)	(15)	2	(41)
Defined benefit plans	0	0	0	0
Pension costs included in salaries and benefits	0	3	0	5
Total defined benefit plans	0	3	0	5
Change in fair value of derivative financial instruments	0	1	0	5
Interest costs included in interest expense	0	2	0	4
Total change in fair value of derivative financial instruments	0	3	0	9
Other comprehensive income (loss) before taxes	15	(80)	40	(132)
Income taxes (benefits) related to other comprehensive income items	1	(12)	6	(21)
Other comprehensive income (loss)	14	(68)	34	(111)
Comprehensive income	1,426	1,311	2,989	2,733
Comprehensive income attributable to noncontrolling interests	219	224	399	416
Comprehensive income attributable to HCA Healthcare, Inc.	$ 1,207	$ 1,087	$ 2,590	$ 2,317