Consolidated Income Statements - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenues	$ 51,533	$ 51,336	$ 46,677
Salaries and benefits	23,874	23,560	21,425
Supplies	8,369	8,481	7,724
Other operating expenses	9,307	9,481	8,608
Equity in earnings of affiliates	(54)	(43)	(29)
Depreciation and amortization	2,721	2,596	2,278
Interest expense	1,584	1,824	1,755
Losses (gains) on sales of facilities	7	(18)	(428)
Losses on retirement of debt	295	211	9
Total expenses including equity in earnings of affiliates	46,103	46,092	41,342
Income before income taxes	5,430	5,244	5,335
Provision for income taxes	1,043	1,099	946
Net income	4,387	4,145	4,389
Net income attributable to noncontrolling interests	633	640	602
Net income attributable to HCA Healthcare, Inc.	$ 3,754	$ 3,505	$ 3,787
Per share data:
Basic earnings per share	$ 11.10	$ 10.27	$ 10.90
Diluted earnings per share	$ 10.93	$ 10.07	$ 10.66
Shares used in earnings per share calculations (in millions):
Basic	338,274	341,210	347,297
Diluted	343,605	348,226	355,303