Condensed Consolidated Income Statements (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Income Statements [Abstract]
Revenues	$ 8,063	$ 7,756	$ 16,118	$ 15,300
Salaries and benefits	3,320	3,076	6,615	6,148
Supplies	1,295	1,251	2,570	2,451
Other operating expenses	1,326	1,226	2,648	2,428
Provision for doubtful accounts	775	788	1,424	1,352
Equity in earnings of affiliates	(73)	(75)	(149)	(143)
Depreciation and amortization	358	355	716	710
Interest expense	520	530	1,053	1,046
Losses on sales of facilities			1
Impairments of long-lived assets		91		109
Loss on retirement of debt	75		75
Termination of management agreement			181
Total expenses including equity in earnings of affiliates	7,596	7,242	15,134	14,101
Income before income taxes	467	514	984	1,199
Provision for income taxes	147	136	330	345
Net income	320	378	654	854
Net income attributable to noncontrolling interests	91	85	185	173
Net income attributable to HCA Holdings, Inc.	$ 229	$ 293	$ 469	$ 681
Per share data:
Basic earnings per share	$ 0.44	$ 0.69	$ 0.98	$ 1.60
Diluted earnings per share	$ 0.43	$ 0.67	$ 0.94	$ 1.56
Shares used in earnings per share calculations (in thousands):
Basic	516,448	426,329	480,525	426,340
Diluted	538,557	437,104	500,463	436,392