Condensed Consolidated Income Statements (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Income Statements [Abstract]
Revenues before provision for doubtful accounts	$ 8,050	$ 7,647	$ 24,168	$ 22,947
Provision for doubtful accounts	740	721	2,164	2,073
Revenues	7,310	6,926	22,004	20,874
Salaries and benefits	3,333	3,134	9,948	9,282
Supplies	1,263	1,234	3,833	3,685
Other operating expenses	1,370	1,268	4,018	3,696
Equity in earnings of affiliates	(68)	(67)	(217)	(210)
Depreciation and amortization	362	352	1,078	1,062
Interest expense	519	525	1,572	1,571
Losses on sales of facilities	2	2	3	2
Impairments of long-lived assets		10		119
Losses on retirement of debt	406		481
Termination of management agreement			181
Total expenses including equity in earnings of affiliates	7,187	6,458	20,897	19,207
Income before income taxes	123	468	1,107	1,667
Provision (benefit) for income taxes	(23)	143	307	488
Net income	146	325	800	1,179
Net income attributable to noncontrolling interests	85	82	270	255
Net income attributable to HCA Holdings, Inc.	$ 61	$ 243	$ 530	$ 924
Per share data:
Basic earnings per share	$ 0.12	$ 0.57	$ 1.08	$ 2.17
Diluted earnings per share	$ 0.11	$ 0.55	$ 1.04	$ 2.11
Shares used in earnings per share calculations (in thousands):
Basic	508,417	426,361	489,924	426,347
Diluted	527,515	439,032	509,583	437,272