Consolidated Income Statements - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 58,752	$ 51,533	$ 51,336
Salaries and benefits	26,779	23,874	23,560
Supplies	9,481	8,369	8,481
Other operating expenses	9,961	9,307	9,481
Equity in earnings of affiliates	(113)	(54)	(43)
Depreciation and amortization	2,853	2,721	2,596
Interest expense	1,566	1,584	1,824
Losses (gains) on sales of facilities	(1,620)	7	(18)
Losses on retirement of debt	12	295	211
Total expenses including equity in earnings of affiliates	48,919	46,103	46,092
Income before income taxes	9,833	5,430	5,244
Provision for income taxes	2,112	1,043	1,099
Net income	7,721	4,387	4,145
Net income attributable to noncontrolling interests	765	633	640
Net income attributable to HCA Healthcare, Inc.	$ 6,956	$ 3,754	$ 3,505
Per share data:
Basic earnings per share	$ 21.52	$ 11.10	$ 10.27
Diluted earnings per share	$ 21.16	$ 10.93	$ 10.07
Shares used in earnings per share calculations (in millions):
Basic	323,315	338,274	341,210
Diluted	328,752	343,605	348,226