Condensed Consolidated Income Statements - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenues	$ 13,977	$ 12,861
Salaries and benefits	6,301	6,118
Supplies	2,224	2,123
Other operating expenses	2,421	2,427
Equity in earnings of affiliates	(21)	(7)
Depreciation and amortization	697	674
Interest expense	384	428
Gains on sales of facilities	(2)	(7)
Losses on retirement of debt	0	295
Total expenses including equity in earnings of affiliates	12,004	12,051
Income before income taxes	1,973	810
Provision for income taxes	393	112
Net income	1,580	698
Net income attributable to noncontrolling interests	157	117
Net income attributable to HCA Healthcare, Inc.	$ 1,423	$ 581
Per share data:
Basic earnings	$ 4.21	$ 1.72
Diluted earnings	$ 4.14	$ 1.69
Shares used in earnings per share calculations (in millions):
Basic	338,123	338,242
Diluted	343,321	344,096