Condensed Consolidated Comprehensive Income Statements (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,275	$ 1,344	$ 4,230	$ 4,188
Other comprehensive loss before taxes:
Foreign currency translation	(35)	(76)	3	(181)
Unrealized losses on available-for-sale securities	(7)	(16)	(5)	(58)
Losses included in other operating expenses	0	0	0	1
Total Unrealized losses on available-for-sale securities	(7)	(16)	(5)	(57)
Defined benefit plans	0	0	0	0
Pension costs included in salaries and benefits	1	2	1	7
Total defined benefit plans	1	2	1	7
Change in fair value of derivative financial instruments	0	1	0	6
Interest costs included in interest expense	0	0	0	4
Total change in fair value of derivative financial instruments	0	1	0	10
Other comprehensive loss before taxes	(41)	(89)	(1)	(221)
Income tax benefits related to other comprehensive loss items	(6)	(12)	0	(33)
Other comprehensive loss	(35)	(77)	(1)	(188)
Comprehensive income	1,240	1,267	4,229	4,000
Comprehensive income attributable to noncontrolling interests	196	210	595	626
Comprehensive income attributable to HCA Healthcare, Inc.	$ 1,044	$ 1,057	$ 3,634	$ 3,374