Consolidated Income Statements (USD $) In Millions, except Share data in Thousands, unless otherwise specified	1 Months Ended	3 Months Ended								12 Months Ended
	Mar. 31, 2013	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Revenues before the provision for doubtful accounts										$ 38,040	$ 36,783	$ 32,506
Provision for doubtful accounts										3,858	3,770	2,824
Revenues		8,836	8,456	8,450	8,440	8,434	8,062	8,112	8,405	34,182	33,013	29,682
Salaries and benefits										15,646	15,089	13,440
Supplies										5,970	5,717	5,179
Other operating expenses										6,237	6,048	5,470
Electronic health record incentive income										(216)	(336)	(210)
Equity in earnings of affiliates										(29)	(36)	(258)
Depreciation and amortization										1,753	1,679	1,465
Interest expense										1,848	1,798	2,037
Losses (gains) on sales of facilities		(2)	1	(3)	11	(6)	(5)	1	1	10	(15)	(142)
Losses on retirement of debt	17				11					17		481
Legal claim costs						110					175
Gain on acquisition of controlling interest in equity investment												(1,522)
Termination of management agreement												181
Total expenses including equity in earnings of affiliates										31,236	30,119	26,121
Income before income taxes										2,946	2,894	3,561
Provision for income taxes										950	888	719
Net income		554	467	537	438	427	455	485	639	1,996	2,006	2,842
Net income attributable to noncontrolling interests										440	401	377
Net income attributable to HCA Holdings, Inc.		$ 424	$ 365	$ 423	$ 344	$ 314	$ 360	$ 391	$ 540	$ 1,556	$ 1,605	$ 2,465
Per share data:
Basic earnings per share		$ 0.96	$ 0.82	$ 0.95	$ 0.77	$ 0.71	$ 0.82	$ 0.89	$ 1.23	$ 3.50	$ 3.65	$ 5.17
Diluted earnings per share		$ 0.92	$ 0.79	$ 0.91	$ 0.74	$ 0.68	$ 0.78	$ 0.85	$ 1.18	$ 3.37	$ 3.49	$ 4.97
Shares used in earnings per share calculations (in thousands):
Basic										445,066	440,178	476,609
Diluted										461,913	459,403	495,943