HCA Healthcare (HCA) 10-K 26 Feb 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Jan. 31, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	HCA
Entity Registrant Name	HCA HOLDINGS, INC.
Entity Central Index Key	860730
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		420,576,500
Entity Public Float			$18,502

Consolidated_Income_Statements

Consolidated Income Statements (USD $)	0 Months Ended		3 Months Ended									12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Nov. 30, 2014	Apr. 30, 2014	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Revenues before the provision for doubtful accounts												$40,087	$38,040	$36,783
Provision for doubtful accounts												3,169	3,858	3,770
Revenues			9,636	9,220	9,230	8,832	8,836	8,456	8,450	8,440		36,918	34,182	33,013
Salaries and benefits												16,641	15,646	15,089
Supplies												6,262	5,970	5,717
Other operating expenses												6,755	6,237	6,048
Electronic health record incentive income												-125	-216	-336
Equity in earnings of affiliates												-43	-29	-36
Depreciation and amortization												1,820	1,753	1,679
Interest expense												1,743	1,848	1,798
Losses (gains) on sales of facilities			-7	-9	-7	-13	-2	1	-3	11		-29	10	-15
Losses on retirement of debt	109	226	-68		143	-49				17		335	17
Legal claim costs						78				-11	175	78		175
Total expenses including equity in earnings of affiliates												33,437	31,236	30,119
Income before income taxes												3,481	2,946	2,894
Provision for income taxes												1,108	950	888
Net income			676	611	632	454	554	467	537	438		2,373	1,996	2,006
Net income attributable to noncontrolling interests												498	440	401
Net income attributable to HCA Holdings, Inc.			$527	$518	$483	$347	$424	$365	$423	$344		$1,875	$1,556	$1,605
Per share data:
Basic earnings per share			$1.22	$1.20	$1.10	$0.78	$0.96	$0.82	$0.95	$0.77		$4.30	$3.50	$3.65
Diluted earnings per share			$1.19	$1.16	$1.07	$0.76	$0.92	$0.79	$0.91	$0.74		$4.16	$3.37	$3.49
Shares used in earnings per share calculations (in thousands):
Basic												435,668	445,066	440,178
Diluted												450,352	461,913	459,403

Consolidated_Comprehensive_Inc

Consolidated Comprehensive Income Statements (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$2,373	$1,996	$2,006
Other comprehensive income (loss) before taxes:
Foreign currency translation	-74	18	37
Unrealized gains (losses) on available-for-sale securities	9	-7	6
Defined benefit plans	-158	134	-89
Pension costs included in salaries and benefits	21	38	46
Total defined benefit plans	-137	172	-43
Change in fair value of derivative financial instruments	-36	3	-151
Interest costs included in interest expense	132	131	122
Total change in fair value of derivative financial instruments	96	134	-29
Other comprehensive income (loss) before taxes	-106	317	-29
Income taxes (benefits) related to other comprehensive income items	-40	117	-12
Other comprehensive income (loss)	-66	200	-17
Comprehensive income	2,307	2,196	1,989
Comprehensive income attributable to noncontrolling interests	498	440	401
Comprehensive income attributable to HCA Holdings, Inc.	$1,809	$1,756	$1,588

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$566	$414
Accounts receivable, less allowance for doubtful accounts of $5,011 and $5,488	5,694	5,208
Inventories	1,279	1,179
Deferred income taxes	366	489
Other	1,025	747
Total current assets	8,930	8,037
Property and equipment, at cost:
Land	1,524	1,487
Buildings	11,941	11,211
Equipment	18,496	17,519
Construction in progress	1,019	856
Property and equipment, at cost	32,980	31,073
Accumulated depreciation	-18,625	-17,454
Property and equipment, net	14,355	13,619
Investments of insurance subsidiaries	494	448
Investments in and advances to affiliates	165	121
Goodwill and other intangible assets	6,416	5,903
Deferred loan costs	219	237
Other	620	466
Total assets	31,199	28,831
Current liabilities:
Accounts payable	2,035	1,803
Accrued salaries	1,370	1,193
Other accrued expenses	1,737	1,913
Long-term debt due within one year	338	786
Total current liabilities	5,480	5,695
Long-term debt	29,307	27,590
Professional liability risks	1,078	949
Income taxes and other liabilities	1,832	1,525
Stockholders' deficit:
Common stock $0.01 par; authorized 1,800,000,000 shares; outstanding 420,477,900 shares - 2014 and 439,604,000 shares - 2013	4	4
Capital in excess of par value		1,386
Accumulated other comprehensive loss	-323	-257
Retained deficit	-7,575	-9,403
Stockholders' deficit attributable to HCA Holdings, Inc.	-7,894	-8,270
Noncontrolling interests	1,396	1,342
Total stockholders' deficit	-6,498	-6,928
Total liabilities and stockholders' deficit	$31,199	$28,831

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for Accounts receivable	$5,011	$5,488
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	1,800,000,000	1,800,000,000
Common stock, shares outstanding	420,477,900	439,604,000

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Deficit (USD $)	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Deficit [Member]	Equity Attributable to Noncontrolling Interests [Member]
In Millions, except Share data
Balance at Dec. 31, 2011	($7,014)	$4	$1,601	($440)	($9,423)	$1,244
Balance, shares at Dec. 31, 2011		437,478,000
Comprehensive income	1,989			-17	1,605	401
Share-based benefit plans	169		169
Share-based benefit plans, shares		5,722,000
Distributions	-3,543				-3,142	-401
Other	58		-17			75
Balance at Dec. 31, 2012	-8,341	4	1,753	-457	-10,960	1,319
Balance, shares at Dec. 31, 2012		443,200,000
Comprehensive income	2,196			200	1,556	440
Repurchase of common stock	-500		-500
Repurchase of common stock, shares		-10,656,000
Share-based benefit plans	139		139
Share-based benefit plans, shares		7,060,000
Distributions	-435					-435
Other	13		-6		1	18
Balance at Dec. 31, 2013	-6,928	4	1,386	-257	-9,403	1,342
Balance, shares at Dec. 31, 2013		439,604,000
Comprehensive income	2,307			-66	1,875	498
Repurchase of common stock	-1,750		-1,701		-49
Repurchase of common stock, shares		-28,583,000
Share-based benefit plans	321		321
Share-based benefit plans, shares		9,457,000
Distributions	-442					-442
Other	-6		-6		2	-2
Balance at Dec. 31, 2014	($6,498)	$4		($323)	($7,575)	$1,396
Balance, shares at Dec. 31, 2014		420,478,000

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income	$2,373	$1,996	$2,006
Increase (decrease) in cash from operating assets and liabilities:
Accounts receivable	-3,645	-4,395	-3,896
Provision for doubtful accounts	3,169	3,858	3,770
Accounts receivable, net	-476	-537	-126
Inventories and other assets	-232	-19	-122
Accounts payable and accrued expenses	444	142	355
Depreciation and amortization	1,820	1,753	1,679
Income taxes	-83	143	96
Losses (gains) on sales of facilities	-29	10	-15
Losses on retirement of debt	335	17
Legal claim costs	78		175
Amortization of deferred loan costs	42	55	62
Share-based compensation	163	113	56
Other	13	7	9
Net cash provided by operating activities	4,448	3,680	4,175
Cash flows from investing activities:
Purchase of property and equipment	-2,176	-1,943	-1,862
Acquisition of hospitals and health care entities	-766	-481	-258
Disposal of hospitals and health care entities	51	33	30
Change in investments	-37	36	16
Other	10	9	11
Net cash used in investing activities	-2,918	-2,346	-2,063
Cash flows from financing activities:
Issuances of long-term debt	5,502		4,850
Net change in revolving bank credit facilities	440	970	-685
Repayment of long-term debt	-5,164	-1,662	-2,441
Distributions to noncontrolling interests	-442	-435	-401
Payment of debt issuance costs	-73	-5	-62
Repurchases of common stock	-1,750	-500
Distributions to stockholders	-7	-16	-3,148
Income tax benefits	134	113	174
Other	-18	-90	-67
Net cash used in financing activities	-1,378	-1,625	-1,780
Change in cash and cash equivalents	152	-291	332
Cash and cash equivalents at beginning of period	414	705	373
Cash and cash equivalents at end of period	566	414	705
Interest payments	1,758	1,832	1,723
Income tax payments, net	$1,057	$694	$618

Accounting_Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Accounting Policies	NOTE 1 — ACCOUNTING POLICIES
	Reporting Entity
	HCA Holdings, Inc. is a holding company whose affiliates own and operate hospitals and related health care entities. The term “affiliates” includes direct and indirect subsidiaries of HCA Holdings, Inc. and partnerships and joint ventures in which such subsidiaries are partners. At December 31, 2014, these affiliates owned and operated 166 hospitals, 113 freestanding surgery centers and provided extensive outpatient and ancillary services. HCA Holdings, Inc.’s facilities are located in 20 states and England. The terms “Company,” “HCA,” “we,” “our” or “us,” as used herein and unless otherwise stated or indicated by context, refer to HCA Holdings, Inc. and its affiliates. The term “facilities” or “hospitals” refer to entities owned and operated by affiliates of HCA and the term “employees” refers to employees of affiliates of HCA.
	Basis of Presentation
	The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
	The consolidated financial statements include all subsidiaries and entities controlled by HCA. We generally define “control” as ownership of a majority of the voting interest of an entity. The consolidated financial statements include entities in which we absorb a majority of the entity’s expected losses, receive a majority of the entity’s expected residual returns, or both, as a result of ownership, contractual or other financial interests in the entity. Significant intercompany transactions have been eliminated. Investments in entities we do not control, but in which we have a substantial ownership interest and can exercise significant influence, are accounted for using the equity method.
	We have completed various acquisitions and joint venture transactions. The accounts of these entities have been included in our consolidated financial statements for periods subsequent to our acquisition of controlling interests. The majority of our expenses are “cost of revenue” items. Costs that could be classified as general and administrative include our corporate office costs, which were $285 million, $287 million and $248 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	Revenues
	Revenues consist primarily of net patient service revenues that are recorded based upon established billing rates less allowances for contractual adjustments. Revenues are recorded during the period the health care services are provided, based upon the estimated amounts due from the patients and third-party payers. Third-party payers include federal and state agencies (under the Medicare and Medicaid programs), managed care health plans (includes plans offered through the health insurance exchanges, beginning in 2014), commercial insurance companies and employers. Estimates of contractual allowances under managed care health plans are based upon the payment terms specified in the related contractual agreements. Contractual payment terms in managed care agreements are generally based upon predetermined rates per diagnosis, per diem rates or discounted fee-for-service rates. Revenues related to uninsured patients and uninsured copayment and deductible amounts for patients who have health care coverage may have discounts applied (uninsured discounts and contractual discounts). We also record a provision for doubtful accounts (based primarily on historical collection experience) related to these uninsured accounts to record net self pay revenues at the estimated amounts we expect to collect. Our revenues from third party payers, the uninsured and other for the years ended December 31, are summarized in the following table (dollars in millions):
		Years Ended December 31,
		2014			Ratio			2013			Ratio			2012			Ratio
	Medicare	$	8,354			22.6	%	$	7,951			23.3	%	$	8,292			25.1	%
	Managed Medicare		3,614			9.8			3,279			9.6			2,954			8.9
	Medicaid		1,848			5			1,480			4.3			1,464			4.4
	Managed Medicaid		1,923			5.2			1,570			4.6			1,504			4.6
	Managed care and other insurers		20,066			54.4			18,654			54.6			17,998			54.5
	International (managed care and other insurers)		1,311			3.6			1,175			3.4			1,060			3.2
			37,116			100.6			34,109			99.8			33,272			100.7
	Uninsured		1,494			4			2,677			7.8			2,580			7.8
	Other		1,477			4			1,254			3.7			931			2.8
	Revenues before provision for doubtful accounts		40,087			108.6			38,040			111.3			36,783			111.3
	Provision for doubtful accounts		(3,169	)		(8.6	)		(3,858	)		(11.3	)		(3,770	)		(11.3	)
	Revenues	$	36,918			100	%	$	34,182			100	%	$	33,013			100	%
	Laws and regulations governing the Medicare and Medicaid programs are complex and subject to interpretation. As a result, there is at least a reasonable possibility recorded estimates will change by a material amount. Estimated reimbursement amounts are adjusted in subsequent periods as cost reports are prepared and filed and as final settlements are determined (in relation to certain government programs, primarily Medicare, this is generally referred to as the “cost report” filing and settlement process). The adjustments to estimated Medicare and Medicaid reimbursement amounts and disproportionate-share funds, which resulted in net increases to revenues, related primarily to cost reports filed during the respective year were $50 million, $41 million and $50 million in 2014, 2013 and 2012, respectively. The adjustments to estimated reimbursement amounts, which resulted in net increases to revenues, related primarily to cost reports filed during previous years were $53 million, $68 million and $242 million in 2014, 2013 and 2012, respectively. The 2012 amount related to cost reports filed during previous years includes two adjustments to Medicare revenues that affected multiple annual cost report periods for the majority of our hospitals (the Rural Floor Provision Settlement increased revenues by approximately $271 million and the implementation of revised Supplemental Security Income ratios reduced revenues by approximately $75 million). Excluding the effect of these Medicare adjustments, the 2012 amount related to cost reports filed during previous years would have been $46 million.
	The Emergency Medical Treatment and Labor Act (“EMTALA”) requires any hospital participating in the Medicare program to conduct an appropriate medical screening examination of every person who presents to the hospital’s emergency room for treatment and, if the individual is suffering from an emergency medical condition, to either stabilize the condition or make an appropriate transfer of the individual to a facility able to handle the condition. The obligation to screen and stabilize emergency medical conditions exists regardless of an individual’s ability to pay for treatment. Federal and state laws and regulations require, and our commitment to providing quality patient care encourages, us to provide services to patients who are financially unable to pay for the health care services they receive. Because we do not pursue collection of amounts determined to qualify as charity care, they are not reported in revenues. Patients treated at hospitals for nonelective care, who have income at or below 200% of the federal poverty level, are eligible for charity care. The federal poverty level is established by the federal government and is based on income and family size. We provide discounts to uninsured patients who do not qualify for Medicaid or charity care. In implementing the uninsured discount policy, we first attempt to qualify uninsured patients for Medicaid, other federal or state assistance or charity care. If an uninsured patient does not qualify for these programs, the uninsured discount is applied.
	To quantify the total impact of and trends related to uninsured accounts, we believe it is beneficial to view charity care, uninsured discounts and the provision for doubtful accounts in combination, rather than each separately. A summary of these amounts for the years ended December 31, follows (dollars in millions):
		2014			Ratio			2013			Ratio			2012			Ratio
	Charity care	$	3,775			24	%	$	3,497			22	%	$	3,093			22	%
	Uninsured discounts		8,999			56			8,210			53			6,978			51
	Provision for doubtful accounts		3,169			20			3,858			25			3,770			27
	Total uncompensated care	$	15,943			100	%	$	15,565			100	%	$	13,841			100	%
	A summary of the estimated cost of total uncompensated care for the years ended December 31, follows (dollars in millions):
		2014			2013			2012
	Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization)	$	31,478		$	29,606		$	28,533
	Cost-to-charges ratio (patient care costs as percentage of gross patient charges)		15.5	%		16.3	%		17.2	%
	Total uncompensated care	$	15,943		$	15,565		$	13,841
	Multiply by the cost-to-charges ratio		15.5	%		16.3	%		17.2	%
	Estimated cost of total uncompensated care	$	2,471		$	2,537		$	2,381
	The sum of charity care, uninsured discounts and the provision for doubtful accounts, as a percentage of the sum of revenues, charity care, uninsured discounts and the provision for doubtful accounts was 30.2% for 2014, 31.3% for 2013 and 29.5% for 2012.
	Recent Pronouncements
	In May 2014, the Financial Accounting Standards Board and the International Accounting Standards Board issued a final, converged, principles-based standard on revenue recognition. Companies across all industries will use a five-step model to recognize revenue from customer contracts. The new standard, which replaces nearly all existing United States Generally Accepted Accounting Principles (“US GAAP”) and International Financial Reporting Standards revenue recognition guidance, will require significant management judgment in addition to changing the way many companies recognize revenue in their financial statements. The standard is effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted under US GAAP. We are evaluating the effects the adoption of this standard will have on our financial statements and financial disclosures.
	Cash and Cash Equivalents
	Cash and cash equivalents include highly liquid investments with a maturity of three months or less when purchased. Our insurance subsidiaries’ cash equivalent investments in excess of the amounts required to pay estimated professional liability claims during the next twelve months are not included in cash and cash equivalents as these funds are not available for general corporate purposes. Carrying values of cash and cash equivalents approximate fair value due to the short-term nature of these instruments.
	Our cash management system provides for daily investment of available balances and the funding of outstanding checks when presented for payment. Outstanding, but unpresented, checks totaling $511 million and $461 million at December 31, 2014 and 2013, respectively, have been included in “accounts payable” in the consolidated balance sheets. Upon presentation for payment, these checks are funded through available cash balances or our credit facility.
	Accounts Receivable
	We receive payments for services rendered from federal and state agencies (under the Medicare and Medicaid programs), managed care health plans, commercial insurance companies, employers and patients. We recognize that revenues and receivables from government agencies are significant to our operations, but do not believe there are significant credit risks associated with these government agencies. We do not believe there are any other significant concentrations of revenues from any particular payer that would subject us to any significant credit risks in the collection of our accounts receivable.
	Additions to the allowance for doubtful accounts are made by means of the provision for doubtful accounts. Accounts written off as uncollectible are deducted from the allowance for doubtful accounts and subsequent recoveries are added. The amount of the provision for doubtful accounts is based upon management’s assessment of historical and expected net collections, business and economic conditions, trends in federal, state and private employer health care coverage and other collection indicators. The provision for doubtful accounts and the allowance for doubtful accounts relate to “uninsured” amounts due directly from patients (including copayment and deductible amounts from patients who have health care coverage). Accounts are written off when all reasonable internal and external collection efforts have been performed. We consider the return of an account from the secondary collection agency to be the culmination of our reasonable collection efforts and the timing basis for writing off the account balance. Writeoffs are based upon specific identification and the writeoff process requires a writeoff adjustment entry to the patient accounting system. Management relies on the results of detailed reviews of historical writeoffs and recoveries at facilities that represent a majority of our revenues and accounts receivable (the “hindsight analysis”) as a primary source of information to utilize in estimating the collectibility of our accounts receivable. We perform the hindsight analysis quarterly, utilizing rolling twelve-months accounts receivable collection and writeoff data. At December 31, 2014 and 2013, the allowance for doubtful accounts represented approximately 91.4% and 92.6%, respectively, of the $5.482 billion and $5.927 billion, respectively, patient due accounts receivable balance. The patient due accounts receivable balance represents the estimated uninsured portion of our accounts receivable. The estimated uninsured portion of Medicaid pending and uninsured discount pending accounts is included in our patient due accounts receivable balance. Days revenues in accounts receivable were 54 days, 54 days and 51 days at December 31, 2014, 2013 and 2012, respectively. Adverse changes in general economic conditions, patient accounting service center operations, changes in payer mix or federal or state governmental health care coverage could affect our collection of accounts receivable, cash flows and results of operations.
	Inventories
	Inventories are stated at the lower of cost (first-in, first-out) or market.
	Property and Equipment
	Depreciation expense, computed using the straight-line method, was $1.798 billion in 2014, $1.733 billion in 2013 and $1.673 billion in 2012. Buildings and improvements are depreciated over estimated useful lives ranging generally from 10 to 40 years. Estimated useful lives of equipment vary generally from four to 10 years.
	When events, circumstances or operating results indicate the carrying values of certain long-lived assets expected to be held and used, might be impaired, we prepare projections of the undiscounted future cash flows expected to result from the use of the assets and their eventual disposition. If the projections indicate the recorded amounts are not expected to be recoverable, such amounts are reduced to estimated fair value. Fair value may be estimated based upon internal evaluations that include quantitative analyses of revenues and cash flows, reviews of recent sales of similar facilities and independent appraisals.
	Long-lived assets to be disposed of are reported at the lower of their carrying amounts or fair value less costs to sell or close. The estimates of fair value are usually based upon recent sales of similar assets and market responses based upon discussions with and offers received from potential buyers.
	Investments of Insurance Subsidiaries
	At December 31, 2014 and 2013, the investments of our 100% owned insurance subsidiaries were classified as “available-for-sale” as defined in Accounting Standards Codification (“ASC”) No. 320, Investments — Debt and Equity Securities and are recorded at fair value. The investment securities are held for the purpose of providing a funding source to pay liability claims covered by the insurance subsidiaries. We perform quarterly assessments of individual investment securities to determine whether declines in market value are temporary or other-than-temporary. Our investment securities evaluation process involves multiple subjective judgments, often involves estimating the outcome of future events, and requires a significant level of professional judgment in determining whether an impairment has occurred. We evaluate, among other things, the financial position and near term prospects of the issuer, conditions in the issuer’s industry, liquidity of the investment, changes in the amount or timing of expected future cash flows from the investment, and recent downgrades of the issuer by a rating agency, to determine if, and when, a decline in the fair value of an investment below amortized cost is considered other-than-temporary. The length of time and extent to which the fair value of the investment is less than amortized cost and our ability and intent to retain the investment, to allow for any anticipated recovery of the investment’s fair value, are important components of our investment securities evaluation process.
	Goodwill and Intangible Assets
	Goodwill is not amortized but is subject to annual impairment tests. In addition to the annual impairment review, impairment reviews are performed whenever circumstances indicate a possible impairment may exist. Impairment testing for goodwill is done at the reporting unit level. Reporting units are one level below the business segment level, and our impairment testing is performed at the operating division or market level. We compare the fair value of the reporting unit assets to the carrying amount, on at least an annual basis, to determine if there is potential impairment. If the fair value of the reporting unit assets is less than their carrying value, we compare the fair value of the goodwill to its carrying value. If the fair value of the goodwill is less than its carrying value, an impairment loss is recognized. Fair value of goodwill is estimated based upon internal evaluations of the related long-lived assets for each reporting unit that include quantitative analyses of market multiples, revenues and cash flows and reviews of recent sales of similar facilities. No goodwill impairments were recognized during 2014, 2013 and 2012. Since January 1, 2000, we have recognized total goodwill impairments of $102 million in the aggregate. None of the goodwill impairments related to evaluations of goodwill at the reporting unit level, as all recognized goodwill impairments during this period related to goodwill allocated to asset disposal groups.
	During 2014, goodwill increased by $542 million related to acquisitions and declined by $13 million related to foreign currency translation and other adjustments. During 2013, goodwill increased by $253 million related to acquisitions and declined by $2 million related to foreign currency translation and other adjustments.
	During 2014, identifiable intangible assets declined by $22 million due to amortization. During 2013, identifiable intangible assets increased by $125 million related to acquisitions and declined by $12 million due to amortization. Identifiable intangible assets are amortized over estimated lives ranging generally from three to 10 years. The gross carrying amount of identifiable intangible assets at both December 31, 2014 and 2013 was $162 million, and accumulated amortization was $38 million and $16 million, respectively. During 2014, indefinite-lived identifiable intangible assets increased by $6 million related to acquisitions. During 2013, there were no changes in indefinite-lived identifiable intangible assets. The gross carrying amount of indefinite-lived identifiable intangible assets at December 31, 2014 and 2013 was $275 million and $269 million, respectively. Indefinite-lived identifiable intangible assets are not amortized but are subject to annual impairment tests, and impairment reviews are performed whenever circumstances indicate a possible impairment may exist.
	Deferred Loan Costs
	Debt issuance costs are amortized based upon the terms of the respective debt obligations. The gross carrying amount of deferred loan costs at December 31, 2014 and 2013 was $375 million and $542 million, respectively, and accumulated amortization was $156 million and $305 million, respectively. Amortization of deferred loan costs is included in interest expense and was $42 million, $55 million and $62 million for 2014, 2013 and 2012, respectively.
	Physician Recruiting Agreements
	In order to recruit physicians to meet the needs of our hospitals and the communities they serve, we enter into minimum revenue guarantee arrangements to assist the recruited physicians during the period they are relocating and establishing their practices. A guarantor is required to recognize, at the inception of a guarantee, a liability for the fair value of the stand-ready obligation undertaken in issuing the guarantee. We expense the total estimated guarantee liability amount at the time the physician recruiting agreement becomes effective as we are not able to justify recording a contract-based asset based upon our analysis of the related control, regulatory and legal considerations.
	The physician recruiting liability amount of $14 million and $15 million at December 31, 2014 and 2013, respectively, represents the amount of expense recognized in excess of payments made through December 31, 2014 and 2013. At December 31, 2014 the maximum amount we could have to pay under all effective minimum revenue guarantees was $44 million.
Professional Liability Claims
Reserves for professional liability risks were $1.407 billion and $1.279 billion at December 31, 2014 and 2013, respectively. The current portion of the reserves, $329 million and $330 million at December 31, 2014 and 2013, respectively, is included in “other accrued expenses” in the consolidated balance sheets. Provisions for losses related to professional liability risks were $395 million, $314 million and $331 million for 2014, 2013 and 2012, respectively, and are included in “other operating expenses” in our consolidated income statements. Provisions for losses related to professional liability risks are based upon actuarially determined estimates. Loss and loss expense reserves represent the estimated ultimate net cost of all reported and unreported losses incurred through the respective consolidated balance sheet dates. The reserves for unpaid losses and loss expenses are estimated using individual case-basis valuations and actuarial analyses. Those estimates are subject to the effects of trends in loss severity and frequency. The estimates are continually reviewed and adjustments are recorded as experience develops or new information becomes known. Adjustments to the estimated reserve amounts are included in current operating results. The reserves for professional liability risks cover approximately 2,700 individual claims and 2,600 individual claims at December 31, 2014 and 2013, respectively, and estimates for unreported potential claims. The time period required to resolve these claims can vary depending upon the jurisdiction and whether the claim is settled or litigated. During 2014 and 2013, $268 million and $307 million, respectively, of net payments were made for professional and general liability claims. The estimation of the timing of payments beyond a year can vary significantly. Although considerable variability is inherent in professional liability reserve estimates, we believe the reserves for losses and loss expenses are adequate; however, there can be no assurance the ultimate liability will not exceed our estimates.
A portion of our professional liability risks is insured through a 100% owned insurance subsidiary. Subject to a $5 million per occurrence self-insured retention (effective January 1, 2015, the self-insured retention increased to $15 million per occurrence), our facilities are insured by our 100% owned insurance subsidiary for losses up to $50 million per occurrence. The insurance subsidiary has obtained reinsurance for professional liability risks generally above a retention level of $15 million per occurrence. We also maintain professional liability insurance with unrelated commercial carriers for losses in excess of amounts insured by our insurance subsidiary.
The obligations covered by reinsurance and excess insurance contracts are included in the reserves for professional liability risks, as we remain liable to the extent the reinsurers and excess insurance carriers do not meet their obligations under the reinsurance and excess insurance contracts. The amounts receivable under the reinsurance contracts include $20 million and $19 million at December 31, 2014 and 2013, respectively, recorded in “other assets”, and $5 million at both December 31, 2014 and 2013 recorded in “other current assets”.
Financial Instruments
Derivative financial instruments are employed to manage risks, including interest rate and foreign currency exposures, and are not used for trading or speculative purposes. We recognize derivative instruments, such as interest rate swap agreements and foreign exchange contracts, in the consolidated balance sheets at fair value. Changes in the fair value of derivatives are recognized periodically either in earnings or in stockholders’ equity, as a component of other comprehensive income (loss), depending on whether the derivative financial instrument qualifies for hedge accounting, and if so, whether it qualifies as a fair value hedge or a cash flow hedge. Generally, changes in fair values of derivatives accounted for as fair value hedges are recorded in earnings, along with the changes in the fair value of the hedged items related to the hedged risk. Gains and losses on derivatives designated as cash flow hedges, to the extent they are effective, are recorded in other comprehensive income (loss), and subsequently reclassified to earnings to offset the impact of the forecasted transactions when they occur. In the event the forecasted transaction to which a cash flow hedge relates is no longer likely, the amount in other comprehensive income (loss) is recognized in earnings and generally the derivative is terminated. Changes in the fair value of derivatives not qualifying as hedges, and for any portion of a hedge that is ineffective, are reported in earnings.
The net interest paid or received on interest rate swaps is recognized as interest expense. Gains and losses resulting from the early termination of interest rate swap agreements are deferred and amortized as adjustments to interest expense over the remaining term of the debt originally associated with the terminated swap.
Electronic Health Record Incentive Payments
The American Recovery and Reinvestment Act of 2009 provides for Medicare and Medicaid incentive payments for eligible hospitals and professionals that adopt and meaningfully use certified electronic health record (“EHR”) technology. We recognize income related to Medicare and Medicaid incentive payments using a gain contingency model that is based upon when our eligible hospitals have demonstrated meaningful use of certified EHR technology for the applicable period and the cost report information for the full cost report year that will determine the final calculation of the incentive payment is available.
Medicaid EHR incentive calculations and related payment amounts are based upon prior period cost report information available at the time our eligible hospitals adopt, implement or demonstrate meaningful use of certified EHR technology for the applicable period, and are not subject to revision for cost report data filed for a subsequent period. Thus, incentive income recognition occurs at the point our eligible hospitals adopt, implement or demonstrate meaningful use of certified EHR technology for the applicable period, as the cost report information for the full cost report year that will determine the final calculation of the incentive payment is known at that time.
Medicare EHR incentive calculations and related initial payment amounts are based upon the most current filed cost report information available at the time our eligible hospitals demonstrate meaningful use of certified EHR technology for the applicable period. However, unlike Medicaid, this initial payment amount will be adjusted based upon an updated calculation using the annual cost report information for the cost report period that began during the applicable payment year. Thus, incentive income recognition occurs at the point our eligible hospitals demonstrate meaningful use of certified EHR technology for the applicable period and the cost report information for the full cost report year that will determine the final calculation of the incentive payment is available.
We recognized $125 million ($118 million Medicare and $7 million Medicaid), $216 million ($183 million Medicare and $33 million Medicaid) and $336 million ($252 million Medicare and $84 million Medicaid) of electronic health record incentive income during the years ended December 31, 2014, 2013 and 2012, respectively. At December 31, 2014 and 2013, we had $39 million and $78 million, respectively, of deferred EHR incentive income, which represent initial incentive payments received for which EHR incentive income has not been recognized.
Noncontrolling Interests in Consolidated Entities
The consolidated financial statements include all assets, liabilities, revenues and expenses of less than 100% owned entities that we control. Accordingly, we have recorded noncontrolling interests in the earnings and equity of such entities.
Reclassifications
Certain prior year amounts have been reclassified to conform to the 2014 presentation.

ShareBased_Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	NOTE 2 — SHARE-BASED COMPENSATION
	Stock Incentive Plan
	The 2006 Stock Incentive Plan for Key Employees of HCA Holdings, Inc. and its Affiliates, as Amended and Restated (the “Stock Incentive Plan”), is designed to promote the long term financial interests and growth of the Company by attracting and retaining management and other personnel and to motivate them to achieve long range goals and further the alignment of interests of participants with those of our stockholders through opportunities for increased stock, or stock-based, ownership in the Company. Portions of the options, stock appreciation rights (“SARs”) and restricted share units (“RSUs”) granted under the Stock Incentive Plan vest solely based upon continued employment over a specific period of time, and portions of the options, SARs and RSUs vest based both upon continued employment over a specific period of time and upon the achievement of predetermined financial targets over time. We granted 3,445,000 and 4,864,000 SARs and 3,832,100 and 4,858,800 RSUs under the Stock Incentive Plan during 2014 and 2013, respectively. At December 31, 2014, there were 19,803,200 stock options and SARs outstanding and exercisable, and there were 27,220,900 shares available for future grants under the Stock Incentive Plan.
	Employee Stock Purchase Plan
	The HCA Holdings, Inc. Employee Stock Purchase Plan (“ESPP”) was approved by the stockholders of the Company during the April 2014 Annual Meeting with 12,000,000 shares of our common stock reserved for issuance thereunder. The ESPP provides our participating employees an opportunity to obtain shares of our common stock at a discount (through payroll deductions over three-month periods) to substantially all employees. At December 31, 2014, 11,772,000 shares of common stock were reserved for issuance under the ESPP provisions. During 2014, the Company recognized $2 million of compensation expense related to the ESPP.
	Stock Option, SAR and RSU Activity
	The fair value of each stock option and SAR award is estimated on the grant date, using valuation models and the weighted average assumptions indicated in the following table. Awards under the Stock Incentive Plan generally vest based on continued employment (“Time Stock Options and SARs” and “Time RSUs”) and based upon achievement of certain financial targets (“Performance Stock Options and SARs” and “Performance RSUs”). Each grant is valued as a single award with an expected term equal to the average expected term of the component vesting tranches. We use historical exercise behavior data and other factors to estimate the expected term of the options and SARs. The expected term of the share-based award is limited by the contractual term, and employee post-vesting termination behavior is incorporated in the historical exercise behavior data.
	Compensation cost is recognized on the straight-line attribution method. The straight-line attribution method requires that total compensation expense recognized must at least equal the vested portion of the grant-date fair value. The expected volatility is derived using historical stock price information for our common stock and that of certain peer group companies. The risk-free interest rate is the approximate yield on United States Treasury Strips having a life equal to the expected share-based award life on the date of grant. The expected life is an estimate of the number of years a share-based award will be held before it is exercised.
		2014			2013			2012
	Risk-free interest rate		1.96	%		1.2	%		1.18	%
	Expected volatility		37	%		45	%		50	%
	Expected life, in years		6.25			6.25			6.25
	Expected dividend yield		—			—			—
	Information regarding Time Stock Options and SARs and Performance Stock Options and SARs activity during 2014, 2013 and 2012 is summarized below (share amounts in thousands):
		Time			Performance			Total			Weighted		Weighted		Aggregate
		Stock			Stock			Stock			Average		Average		Intrinsic Value
		Options			Options and			Options			Exercise		Remaining		(dollars in millions)
		and			SARs			and			Price		Contractual Term
		SARs						SARs
	Options outstanding, December 31, 2011		21,739			24,573			46,312		$	9.26
	Granted		3,174			3,174			6,348			27.03
	Exercised		(5,530	)		(5,128	)		(10,658	)		7.6
	Cancelled		(192	)		(568	)		(760	)		9.49
	Options outstanding, December 31, 2012		19,191			22,051			41,242			11.56
	Granted		2,432			2,432			4,864			37.49
	Exercised		(4,498	)		(5,843	)		(10,341	)		8.49
	Cancelled		(316	)		(263	)		(579	)		25.5
	Options and SARs outstanding, December 31, 2013		16,809			18,377			35,186			15.82
	Granted		1,723			1,722			3,445			48.56
	Exercised		(3,322	)		(5,234	)		(8,556	)		9.15
	Cancelled		(159	)		(121	)		(280	)		29.54
	Options and SARs outstanding, December 31, 2014		15,051			14,744			29,795			21.39		5.3 years	$	1,549
	Options and SARs exercisable, December 31, 2014		10,102			9,796			19,898		$	13.79		3.9 years	$	1,186
	The weighted average fair values of stock options and SARs granted during 2014, 2013 and 2012 were $19.13, $16.68 and $13.16 per share, respectively. The total intrinsic value of stock options and SARs exercised in the year ended December 31, 2014 was $412 million. As of December 31, 2014, the unrecognized compensation cost related to nonvested stock options and SARs was $110 million.
	Information regarding Time RSUs and Performance RSUs activity during 2014, 2013 and 2012 is summarized below (share amounts in thousands):
		Time RSUs			Performance			Total RSUs			Weighted
					RSUs						Average
											Grant
											Date Fair
											Value
	RSUs outstanding, December 31, 2011		80			—			80		$	30
	Granted		3,162			1,485			4,647			26.98
	Vested		(4	)		—			(4	)		30
	Cancelled		(164	)		(75	)		(239	)		26.99
	RSUs outstanding, December 31, 2012		3,074			1,410			4,484			27.03
	Granted		3,305			1,554			4,859			37.43
	Vested		(831	)		(352	)		(1,183	)		27.3
	Cancelled		(449	)		(213	)		(662	)		31.91
	RSUs outstanding, December 31, 2013		5,099			2,399			7,498			33.3
	Granted		2,603			1,229			3,832			48.53
	Vested		(1,423	)		(692	)		(2,115	)		32.56
	Cancelled		(384	)		(155	)		(539	)		38.3
	RSUs outstanding, December 31, 2014		5,895			2,781			8,676			39.89
	As of December 31, 2014, the unrecognized compensation cost related to RSUs was $243 million.
	During 2012, our Board of Directors declared three distributions to the Company’s stockholders and holders of certain vested share-based awards. The distributions totaled $6.50 per share and vested share-based award (subject to limitations for certain awards), or $3.142 billion in the aggregate. Pursuant to the terms of our share-based award plans, the holders of nonvested stock options and SARs received $6.50 per share reductions to the exercise price of the applicable share-based awards (subject to certain limitations for certain share-based awards that resulted in deferred distributions for a portion of the declared distribution, which will be paid upon the vesting of the applicable share-based award). The holders of any nonvested RSUs will be paid the applicable distribution amounts upon the vesting of the applicable RSUs. There were no distributions declared during 2014 and 2013.

Acquisitions_and_Dispositions

Acquisitions and Dispositions	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Acquisitions and Dispositions	NOTE 3 — ACQUISITIONS AND DISPOSITIONS
	During 2014, we paid $161 million to acquire three hospitals, and we paid $605 million to acquire nonhospital health care entities. During 2013, we paid $146 million to acquire three hospitals, and we paid $335 million to acquire nonhospital health care entities. During 2012, we paid $58 million to acquire a hospital and paid $200 million to acquire nonhospital health care entities. Purchase price amounts have been allocated to the related assets acquired and liabilities assumed based upon their respective fair values. The purchase price paid in excess of the fair value of identifiable net assets of these acquired entities aggregated $542 million, $253 million and $232 million in 2014, 2013 and 2012, respectively. The consolidated financial statements include the accounts and operations of the acquired entities subsequent to the respective acquisition dates. The pro forma effects of these acquired entities on our results of operations for periods prior to the respective acquisition dates were not significant.
	During 2014, we received proceeds of $51 million and recognized a net pretax gain of $29 million ($18 million after tax) related to the sale of a hospital facility and sales of real estate and other investments. During 2013, we received proceeds of $33 million and recognized a net pretax loss of $10 million ($7 million after tax) related to the sale of a hospital facility and sales of real estate and other investments. During 2012, we received proceeds of $30 million and recognized a net pretax gain of $15 million ($9 million after tax) related to sales of real estate and other investments.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 4 — INCOME TAXES
	The provision for income taxes consists of the following (dollars in millions):
		2014			2013			2012
	Current:
	Federal	$	916		$	827		$	604
	State		102			86			58
	Foreign		52			44			43
	Deferred:
	Federal		3			(53	)		167
	State		(5	)		20			(8	)
	Foreign		40			26			24
		$	1,108		$	950		$	888
	The provision for income taxes reflects $9 million ($6 million net of tax) of interest expense related to taxing authority examinations and $4 million and $53 million ($3 million and $33 million net of tax, respectively) of reductions in interest related to taxing authority examinations for the years ended December 31, 2014, 2013 and 2012, respectively. Our foreign income before income taxes was $238 million, $187 million and $178 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	A reconciliation of the federal statutory rate to the effective income tax rate follows:
		2014			2013			2012
	Federal statutory rate		35	%		35	%		35	%
	State income taxes, net of federal tax benefit		2.3			2.3			2.2
	Change in liability for uncertain tax positions		0.5			0.5			—
	Tax exempt interest income		(0.1	)		(0.2	)		(0.2	)
	Other items, net		(0.5	)		0.3			(1.4	)
	Effective income tax rate on income applicable to HCA Holdings, Inc.		37.2			37.9			35.6
	Income attributable to noncontrolling interests from consolidated partnerships		(5.4	)		(5.7	)		(4.9	)
	Effective income tax rate on income before income taxes		31.8	%		32.2	%		30.7	%
	A summary of the items comprising the deferred tax assets and liabilities at December 31 follows (dollars in millions):
		2014						2013
		Assets			Liabilities			Assets			Liabilities
	Depreciation and fixed asset basis differences	$	—		$	226		$	—		$	229
	Allowances for professional liability and other risks		403			—			365			—
	Accounts receivable		341			—			423			—
	Compensation		272			—			240			—
	Other		756			745			638			698
		$	1,772		$	971		$	1,666		$	927
	At December 31, 2014, federal and state net operating loss carryforwards (expiring in years 2015 through 2030) available to offset future taxable income approximated $120 million and $5 million, respectively. Utilization of net operating loss carryforwards in any one year may be limited.
	The following table summarizes the activity related to our unrecognized tax benefits (dollars in millions):
		2014			2013
	Balance at January 1	$	445		$	425
	Additions based on tax positions related to the current year		3			21
	Additions for tax positions of prior years		72			25
	Reductions for tax positions of prior years		(11	)		(18	)
	Settlements		(1	)		(5	)
	Lapse of applicable statutes of limitations		(5	)		(3	)
	Balance at December 31	$	503		$	445
	During 2014, the IRS Examination Division began an audit of HCA Holding’s Inc.’s 2011 and 2012 federal income tax returns. We are also subject to examination by state and foreign taxing authorities. During 2013, we finalized settlements with the IRS resolving all outstanding issues for HCA Inc.’s 2007, 2008 and 2009 tax years.
	Our liability for unrecognized tax benefits was $548 million, including accrued interest of $58 million and excluding $13 million that was recorded as reductions of the related deferred tax assets, as of December 31, 2014 ($462 million, $30 million and $13 million, respectively, as of December 31, 2013). Unrecognized tax benefits of $205 million ($160 million as of December 31, 2013) would affect the effective rate, if recognized.
	Depending on the resolution of any IRS, state and foreign tax disputes, the completion of examinations by federal, state or foreign taxing authorities, or the expiration of statutes of limitation for specific taxing jurisdictions, we believe it is reasonably possible that our liability for unrecognized tax benefits may significantly increase or decrease within the next 12 months. However, we are currently unable to estimate the range of any possible change.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 5 — EARNINGS PER SHARE
	We compute basic earnings per share using the weighted average number of common shares outstanding. We compute diluted earnings per share using the weighted average number of common shares outstanding plus the dilutive effect of outstanding stock options, SARs and RSUs, computed using the treasury stock method. During November 2013, May 2014 and the fourth quarter of 2014, we repurchased 10,656,436 shares, 14,554,628 shares and 14,028,591 shares, respectively, of our common stock. The following table sets forth the computations of basic and diluted earnings per share for the years ended December 31, 2014, 2013 and 2012 (dollars in millions, except per share amounts, and shares in thousands):
		2014		2013		2012
	Net income attributable to HCA Holdings, Inc	$	1,875	$	1,556	$	1,605
	Weighted average common shares outstanding		435,668		445,066		440,178
	Effect of dilutive incremental shares		14,684		16,847		19,225
	Shares used for diluted earnings per share		450,352		461,913		459,403
	Earnings per share:
	Basic earnings per share	$	4.3	$	3.5	$	3.65
	Diluted earnings per share	$	4.16	$	3.37	$	3.49

Investments_of_Insurance_Subsi

Investments of Insurance Subsidiaries	12 Months Ended
	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Investments of Insurance Subsidiaries	NOTE 6 — INVESTMENTS OF INSURANCE SUBSIDIARIES
	A summary of the insurance subsidiaries’ investments at December 31 follows (dollars in millions):
		2014
		Amortized		Unrealized					Fair
		Cost		Amounts					Value
				Gains		Losses
	Debt securities:
	States and municipalities	$	477	$	18	$	(1	)	$	494
	Money market funds		61		—		—			61
			538		18		(1	)		555
	Equity securities		1		2		—			3
		$	539	$	20	$	(1	)		558
	Amounts classified as current assets									(64	)
	Investment carrying value								$	494
		2013
		Amortized		Unrealized					Fair
		Cost		Amounts					Value
				Gains		Losses
	Debt securities:
	States and municipalities	$	404	$	11	$	(3	)	$	412
	Money market funds		94		—		—			94
			498		11		(3	)		506
	Equity securities		2		2		—			4
		$	500	$	13	$	(3	)		510
	Amounts classified as current assets									(62	)
	Investment carrying value								$	448
	At December 31, 2014 and 2013, the investments of our insurance subsidiaries were classified as “available-for-sale.” Changes in temporary unrealized gains and losses are recorded as adjustments to other comprehensive income (loss).
	Scheduled maturities of investments in debt securities at December 31, 2014 were as follows (dollars in millions):
		Amortized		Fair
		Cost		Value
	Due in one year or less	$	82	$	82
	Due after one year through five years		229		234
	Due after five years through ten years		109		116
	Due after ten years		118		123
		$	538	$	555
	The average expected maturity of the investments in debt securities at December 31, 2014 was 3.8 years, compared to the average scheduled maturity of 5.6 years. Expected and scheduled maturities may differ because the issuers of certain securities have the right to call, prepay or otherwise redeem such obligations prior to their scheduled maturity date.

Financial_Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments	NOTE 7 — FINANCIAL INSTRUMENTS
	Interest Rate Swap Agreements
	We have entered into interest rate swap agreements to manage our exposure to fluctuations in interest rates. These swap agreements involve the exchange of fixed and variable rate interest payments between two parties based on common notional principal amounts and maturity dates. Pay-fixed interest rate swaps effectively convert LIBOR indexed variable rate obligations to fixed interest rate obligations. The interest payments under these agreements are settled on a net basis. The net interest payments, based on the notional amounts in these agreements, generally match the timing of the related liabilities, for the interest rate swap agreements which have been designated as cash flow hedges. The notional amounts of the swap agreements represent amounts used to calculate the exchange of cash flows and are not our assets or liabilities. Our credit risk related to these agreements is considered low because the swap agreements are with creditworthy financial institutions.
	The following table sets forth our interest rate swap agreements, which have been designated as cash flow hedges, at December 31, 2014 (dollars in millions):
		Notional		Maturity Date		Fair
		Amount				Value
	Pay-fixed interest rate swaps	$	3,000		December 2016	$	(166	)
	Pay-fixed interest rate swaps		1,000		December 2017		(33	)
	During the next 12 months, we estimate $117 million will be reclassified from other comprehensive income (“OCI”) to interest expense.
	Derivatives — Results of Operations
	The following table presents the effect of our interest rate swaps on our results of operations for the year ended December 31, 2014 (dollars in millions):
	Derivatives in Cash Flow Hedging Relationships	Amount of Loss		Location of Loss		Amount of Loss
		Recognized in OCI on		Reclassified from		Reclassified from
		Derivatives, Net of  Tax		Accumulated OCI		Accumulated OCI
				into Operations		into Operations
	Interest rate swaps	$	23		Interest expense	$	132
	Credit-risk-related Contingent Features
	We have agreements with each of our derivative counterparties that contain a provision where we could be declared in default on our derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to our default on the indebtedness. As of December 31, 2014, we have not been required to post any collateral related to these agreements. If we had breached these provisions at December 31, 2014, we would have been required to settle our obligations under the agreements at their aggregate, estimated termination value of $206 million.

Assets_and_Liabilities_Measure

Assets and Liabilities Measured at Fair Value	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value	NOTE 8 — ASSETS AND LIABILITIES MEASURED AT FAIR VALUE
	Accounting Standards Codification 820, Fair Value Measurements and Disclosures (“ASC 820”) emphasizes fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, ASC 820 utilizes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).
	Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input significant to the fair value measurement in its entirety. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.
	Cash Traded Investments
	Our cash traded investments are generally classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. Certain types of cash traded instruments are classified within Level 3 of the fair value hierarchy because they trade infrequently and therefore have little or no price transparency. The valuation of these securities involves management’s judgment, after consideration of market factors and the absence of market transparency, market liquidity and observable inputs. Our valuation models derived fair market values compared to tax-equivalent yields of other securities of similar credit worthiness and similar effective maturities.
	Derivative Financial Instruments
	We have entered into interest rate swap agreements to manage our exposure to fluctuations in interest rates. The valuation of these instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. We incorporate credit valuation adjustments to reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements of these investments.
	Although we determined the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. We assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions, and at December 31, 2014 and 2013, we determined the credit valuation adjustments were not significant to the overall valuation of our derivatives.
	The following tables summarize our assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and 2013, aggregated by the level in the fair value hierarchy within which those measurements fall (dollars in millions):
		December 31, 2014
		Fair Value			Fair Value Measurements Using
					Quoted Prices in			Significant Other			Significant
					Active Markets for			Observable Inputs			Unobservable Inputs
					Identical Assets			(Level 2)			(Level 3)
					and Liabilities
					(Level 1)
	Assets:
	Investments of insurance subsidiaries:
	Debt securities:
	States and municipalities	$	494		$	—		$	488		$	6
	Money market funds		61			61			—			—
			555			61			488			6
	Equity securities		3			3			—			—
	Investments of insurance subsidiaries		558			64			488			6
	Less amounts classified as current assets		(64	)		(61	)		(3	)		—
		$	494		$	3		$	485		$	6
	Liabilities:
	Interest rate swaps (Income taxes and other liabilities)	$	199		$	—		$	199		$	—
		December 31, 2013
		Fair Value			Fair Value Measurements Using
					Quoted Prices in			Significant Other			Significant
					Active Markets for			Observable Inputs			Unobservable Inputs
					Identical Assets			(Level 2)			(Level 3)
					and Liabilities
					(Level 1)
	Assets:
	Investments of insurance subsidiaries:
	Debt securities:
	States and municipalities	$	412		$	—		$	405		$	7
	Money market funds		94			94			—			—
			506			94			405			7
	Equity securities		4			3			—			1
	Investments of insurance subsidiaries		510			97			405			8
	Less amounts classified as current assets		(62	)		(62	)		—			—
		$	448		$	35		$	405		$	8
	Liabilities:
	Interest rate swaps (Income taxes and other liabilities)	$	295		$	—		$	295		$	—
	The following table summarizes the activity related to the investments of our insurance subsidiaries which have fair value measurements based on significant unobservable inputs (Level 3) during the year ended December 31, 2014 (dollars in millions):
	Asset balances at December 31, 2013	$	8
	Settlements		(2	)
	Asset balances at December 31, 2014	$	6
	The estimated fair value of our long-term debt was $30.861 billion and $29.603 billion at December 31, 2014 and 2013, respectively, compared to carrying amounts aggregating $29.645 billion and $28.376 billion, respectively. The estimates of fair value are generally based upon the quoted market prices or quoted market prices for similar issues of long-term debt with the same maturities.

LongTerm_Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 9 — LONG-TERM DEBT
	A summary of long-term debt at December 31, including related interest rates at December 31, 2014, follows (dollars in millions):
			2014		2013
	Senior secured asset-based revolving credit facility (effective interest rate of 1.7%)		$	2,880	$	2,440
	Senior secured revolving credit facility			—		—
	Senior secured term loan facilities (effective interest rate of 5.2%)			5,517		5,598
	Senior secured notes (effective interest rate of 5.5%)			11,100		9,695
	Other senior secured debt (effective interest rate of 6.3%)			573		448
	Senior secured debt			20,070		18,181
	Senior unsecured notes (effective interest rate of 7.2%)			9,575		10,195
	Total debt (average life of 6.1 years, rates averaging 5.6%)			29,645		28,376
	Less amounts due within one year			338		786
			$	29,307	$	27,590
	2015 Activity
	During January 2015, we issued $1.000 billion aggregate principal amount of 5.375% senior notes due 2025. We used a portion of the net proceeds to repay at maturity our $750 million aggregate principal amount of 6.375% senior unsecured notes due 2015.
	2014 Activity
	During October 2014, we issued $600 million aggregate principal amount of 4.25% senior secured notes due 2019 and $1.400 billion aggregate principal amount of 5.25% senior secured notes due 2025. During November 2014, we used a portion of the proceeds from the October 2014 debt issuances to redeem all $1.400 billion aggregate principal amount of our outstanding 71/4% senior secured notes due 2020. The pretax loss on retirement of debt related to this redemption was $109 million.
	During March 2014, we issued $1.500 billion aggregate principal amount of 3.75% senior secured notes due 2019 and $2.000 billion aggregate principal amount of 5.00% senior secured notes due 2024, and repaid at maturity all $500 million aggregate principal amount of our outstanding 5.75% senior unsecured notes. During April 2014, we used proceeds from the March 2014 debt issuance to redeem all $1.500 billion aggregate principal amount of our outstanding 81/2% senior secured notes due 2019 and all $1.250 billion aggregate principal amount of our outstanding 77/8% senior secured notes due 2020. The pretax loss on retirement of debt related to these redemptions was $226 million.
	2013 Activity
	During March 2013, we redeemed all $201 million aggregate principal amount of our 97/8% senior secured second lien notes due 2017, at a redemption price of 104.938% of the principal amount. The pretax loss on retirement of debt related to this redemption was $17 million.
	During November 2013, our $329 million senior secured European term loan facility matured.
	Senior Secured Credit Facilities And Other Senior Secured Debt
	We have entered into the following senior secured credit facilities: (i) a $3.250 billion asset-based revolving credit facility maturing on March 7, 2019 with a borrowing base of 85% of eligible accounts receivable, subject to customary reserves and eligibility criteria ($2.880 billion outstanding at December 31, 2014) (the “ABL credit facility”); (ii) a $2.000 billion senior secured revolving credit facility maturing on February 26, 2019 (none outstanding at December 31, 2014 without giving effect to certain outstanding letters of credit); (iii) a $482 million senior secured term loan A-2 facility maturing on May 2, 2016; (iv) a $717 million senior secured term loan A-4 facility maturing on February 2, 2016; (v) a $2.343 billion senior secured term loan B-4 facility maturing on May 1, 2018; and (vi) a $1.975 billion senior secured term loan B-5 facility maturing on March 31, 2017. We refer to the facilities described under (ii) through (vi) above, collectively, as the “cash flow credit facility” and, together with the ABL credit facility, the “senior secured credit facilities.”
	Borrowings under the senior secured credit facilities bear interest at a rate equal to, at our option, either (a) a base rate determined by reference to the higher of (1) the federal funds rate plus 0.50% or (2) the prime rate of Bank of America or (b) a LIBOR rate for the currency of such borrowing for the relevant interest period, plus, in each case, an applicable margin. The applicable margin for borrowings under the senior secured credit facilities may be reduced subject to attaining certain leverage ratios.
	The senior secured credit facilities contain a number of covenants that restrict, subject to certain exceptions, our (and some or all of our subsidiaries’) ability to incur additional indebtedness, repay subordinated indebtedness, create liens on assets, sell assets, make investments, loans or advances, engage in certain transactions with affiliates, pay dividends and distributions, and enter into sale and leaseback transactions. In addition, we are required to satisfy and maintain a maximum total leverage ratio covenant under the cash flow credit facility and, in certain situations under the ABL credit facility, a minimum interest coverage ratio covenant.
	Senior secured notes consist of (i) $1.500 billion aggregate principal amount of 3.75% senior secured notes due 2019; (ii) $600 million aggregate principal amount of 4.25% senior secured notes due 2019; (iii) $3.000 billion aggregate principal amount of 6.50% senior secured notes due 2020; (iv) $1.350 billion aggregate principal amount of 5.875%  senior secured notes due 2022; (v) $1.250 billion aggregate principal amount of 4.75%  senior secured notes due 2023; (vi) $2.000 billion aggregate principal amount of 5.00% senior secured notes due 2024; and (vii) $1.400 billion aggregate principal amount of 5.25% senior secured notes due 2025. Capital leases and other secured debt totaled $573 million at December 31, 2014.
	We use interest rate swap agreements to manage the variable rate exposure of our debt portfolio. At December 31, 2014, we had entered into effective interest rate swap agreements, in a total notional amount of $4.000 billion, in order to hedge a portion of our exposure to variable rate interest payments associated with the senior secured credit facilities. The effect of the interest rate swaps is reflected in the effective interest rates for the senior secured credit facilities.
	Senior Unsecured Notes
	Senior unsecured notes consist of (i) $6.041 billion aggregate principal amount of senior notes with maturities ranging from 2016 to 2033; (ii) an aggregate principal amount of  $125 million medium-term notes maturing 2025; (iii) an aggregate principal amount of $886 million debentures with maturities ranging from 2015 to 2095; (iv) an aggregate principal amount of $1.525 billion senior notes due 2021 issued by HCA Holdings, Inc.; (v) an aggregate principal amount of $1.000 billion senior notes due 2021 issued by HCA Holdings, Inc.; and (vi) $2 million of unamortized debt discounts that reduce the indebtedness.
	General Debt Information
	The senior secured credit facilities and senior secured notes are fully and unconditionally guaranteed by substantially all existing and future, direct and indirect, 100% owned material domestic subsidiaries that are “Unrestricted Subsidiaries” under our Indenture (the “1993 Indenture”) dated December 16, 1993 (except for certain special purpose subsidiaries that only guarantee and pledge their assets under our ABL credit facility).
	All obligations under the ABL credit facility, and the guarantees of those obligations, are secured, subject to permitted liens and other exceptions, by a first-priority lien on substantially all of the receivables of the borrowers and each guarantor under such ABL credit facility (the “Receivables Collateral”).
	All obligations under the cash flow credit facility and the guarantees of such obligations are secured, subject to permitted liens and other exceptions, by:
		•		a first-priority lien on the capital stock owned by HCA Inc., or by any U.S. guarantor, in each of their respective first-tier subsidiaries;
		•		a first-priority lien on substantially all present and future assets of HCA Inc. and of each U.S. guarantor other than (i) “Principal Properties” (as defined in the 1993 Indenture), (ii) certain other real properties and (iii) deposit accounts, other bank or securities accounts, cash, leaseholds, motor-vehicles and certain other exceptions; and
		•		a second-priority lien on certain of the Receivables Collateral.
	Our senior secured notes and the related guarantees are secured by first-priority liens, subject to permitted liens, on our and our subsidiary guarantors’ assets, subject to certain exceptions, that secure our cash flow credit facility on a first-priority basis and are secured by second-priority liens, subject to permitted liens, on our and our subsidiary guarantors’ assets that secure our ABL credit facility on a first-priority basis and our other cash flow credit facility on a second-priority basis.
	Maturities of long-term debt in years 2016 through 2019, excluding amounts under the ABL credit facility, are $2.306 billion, $2.053 billion, $2.830 billion and $2.137 billion, respectively.

Contingencies_and_Legal_Claim_

Contingencies and Legal Claim Costs	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Contingencies and Legal Claim Costs	NOTE 10 — CONTINGENCIES AND LEGAL CLAIM COSTS
	We operate in a highly regulated and litigious industry. As a result, various lawsuits, claims and legal and regulatory proceedings have been and can be expected to be instituted or asserted against us. We are subject to claims for additional taxes and related interest and penalties. We are also subject to claims and suits arising in the ordinary course of business, including claims for personal injuries or wrongful restriction of, or interference with, physicians’ staff privileges. In certain of these actions the claimants may seek punitive damages against us which may not be covered by insurance. The resolution of any such lawsuits, claims or legal and regulatory proceedings could have a material, adverse effect on our results of operations or financial position.
	Government Investigations, Claims and Litigation
	Health care companies are subject to numerous investigations by various governmental agencies. Further, under the federal False Claims Act (“FCA”), private parties have the right to bring qui tam, or “whistleblower,” suits against companies that submit false claims for payments to, or improperly retain overpayments from, the government. Some states have adopted similar state whistleblower and false claims provisions. Certain of our individual facilities have received, and from time to time, other facilities may receive, government inquiries from, and may be subject to investigation by, federal and state agencies. Depending on whether the underlying conduct in these or future inquiries or investigations could be considered systemic, their resolution could have a material, adverse effect on our financial position, results of operations and liquidity.
	As initially disclosed in 2010, the Civil Division of the Department of Justice (“DOJ”) has contacted the Company in connection with its nationwide review of whether, in certain cases, hospital charges to the federal government relating to implantable cardio-defibrillators (“ICDs”) met the CMS criteria. In connection with this nationwide review, the DOJ has indicated that it will be reviewing certain ICD billing and medical records at 95 HCA hospitals; the review covers the period from October 2003 to the present. In August 2012, HCA, along with non-HCA hospitals across the country subject to the DOJ’s review, received from the DOJ a proposed framework for resolving the DOJ’s review of ICDs. The Company is cooperating in the review. The review could potentially give rise to claims against the Company under the federal FCA or other statutes, regulations or laws. At this time, we cannot predict what effect, if any, this review or any resulting claims could have on the Company.
	In July 2012, the Civil Division of the U.S. Attorney’s Office in Miami requested information on reviews assessing the medical necessity of interventional cardiology services provided at any Company facility (other than peer reviews). The Company cooperated with the government’s request and produced medical records associated with particular reviews at eight hospitals, located primarily in Florida. On February 23, 2015, the United States District Court for the Southern District of Florida unsealed a qui tam action which had been filed under seal on February 16, 2012, and alleges particular False Claims Act violations relating to two specific facilities that were among the subjests of the Miami U.S. Attorney's Office Investigation. On January 20, 2015, the U.S. Attorney's Office filed with the District Court a formal notice that the Department of Justice had declined to intervene in that action. The U.S. Attorney's Office in Miami is continuing its evalualtion of the medical necessity of certain interventional cardiology services at the other hospitals for which the Company produced records. At this time, we cannot predict what effect, if any the qui tam action, or any claims that might result from the U.S. Attorney's continued review, including any potential claims under the federal FCA, other statutes, regulations or laws, could have on the Company.
	On April 2, 2014, the UK Competition and Markets Authority (“Authority”) issued a final report on its investigation of the private health care market in London. It concluded, among other things, that many private hospitals face little competition in central London, and that there are high barriers to entry. As part of its remedies package, the Authority ordered HCA to sell either: (a) its London Bridge and Princess Grace hospitals; or (b) its Wellington Hospital, including the Hospital Platinum Medical Centre. It also imposed other remedial conditions on HCA and other private health care providers, including: regulation of incentives to referring physicians; increased access to information about fees and performance; and restrictions on future arrangements between private providers and National Health Service private patient units. HCA disagrees with the Authority’s assessment of the competitive conditions for hospitals in London, as well as its proposed divestiture remedy, and appealed the decision to the Competition Appeal Tribunal. The Competition Appeal Tribunal overturned certain of the Authority’s findings and sent the matter back to the Authority for further proceedings.
	Securities Class Action Litigation
	On October 28, 2011, a shareholder action, Schuh v. HCA Holdings, Inc. et al., was filed in the United States District Court for the Middle District of Tennessee seeking monetary relief. The case sought to include as a class all persons who acquired the Company’s stock pursuant or traceable to the Company’s Registration Statement issued in connection with the March 9, 2011 initial public offering. The lawsuit asserted a claim under Section 11 of the Securities Act of 1933 against the Company, certain members of the board of directors, and certain underwriters in the offering. It further asserted a claim under Section 15 of the Securities Act of 1933 against the same members of the board of directors. The action alleged various deficiencies in the Company’s disclosures in the Registration Statement. Subsequently, two additional class action complaints, Kishtah v. HCA Holdings, Inc. et al. and Daniels v. HCA Holdings, Inc. et al., setting forth substantially similar claims against substantially the same defendants were filed in the same federal court on November 16, 2011 and December 12, 2011, respectively. All three of the cases were consolidated. On May 3, 2012, the court appointed New England Teamsters & Trucking Industry Pension Fund as Lead Plaintiff for the consolidated action. On July 13, 2012, the lead plaintiff filed an amended complaint asserting claims under Sections 11 and 12(a)(2) of the Securities Act of 1933 against the Company, certain members of the board of directors, and certain underwriters in the offering. It further asserts a claim under Section 15 of the Securities Act of 1933 against the same members of the board of directors and Hercules Holding II, LLC, a majority shareholder of the Company at the time of the initial public offering. The consolidated complaint alleges deficiencies in the Company’s disclosures in the Registration Statement and Prospectus relating to: (1) the accounting for the Company’s 2006 recapitalization and 2010 reorganization; (2) the Company’s failure to maintain effective internal controls relating to its accounting for such transactions; and (3) the Company’s Medicare and Medicaid revenue growth rates. The Company and other defendants moved to dismiss the amended complaint on September 11, 2012. The court granted the motion in part on May 28, 2013. The action proceeded to discovery on the remaining claims. The plaintiffs’ motion for class certification was granted on September 22, 2014. The court certified a class consisting of all persons that acquired HCA stock on or before October 28, 2011 (the date of the lawsuit) pursuant to the Registration Statement issued in connection with the March 9, 2011 initial public offering. A request to the court of appeals to hear an immediate appeal of this ruling was denied.
	In addition to the above described shareholder class actions, on December 8, 2011, a federal shareholder derivative action, Sutton v. Bracken, et al., putatively initiated in the name of the Company, was filed in the United States District Court for the Middle District of Tennessee against certain officers and present and former directors of the Company seeking monetary relief. The action alleges breaches of fiduciary duties by the named officers and directors in connection with the accounting and earnings claims set forth in the shareholder class actions described above. Setting forth substantially similar claims against substantially the same defendants, an additional federal derivative action, Schroeder v. Bracken, et al., was filed in the United States District Court for the Middle District of Tennessee on December 16, 2011, and a state derivative action, Bagot v. Bracken, et al., was filed in Tennessee state court in the Davidson County Circuit Court on December 20, 2011. The federal derivative actions were consolidated in the Middle District of Tennessee and stayed pending developments in the shareholder class actions. The state derivative action had also been stayed pending developments in the shareholder class actions, but that stay has expired. The plaintiff in the state derivative action subsequently filed an amended complaint on September 9, 2013 that added additional allegations made in the shareholder class actions. On September 24, 2013, an additional state derivative action, Steinberg v. Bracken, et al., was filed in Tennessee state court in the Davidson County Circuit Court. This action against our board of directors has been consolidated with the earlier filed state derivative action. The plaintiffs in the consolidated action filed a consolidated complaint on December 4, 2013. The Company filed a motion to again stay the state derivative action pending developments in the class action, but the court has not yet acted on that motion.
	Health Midwest Litigation
	In October 2009, the Health Care Foundation of Greater Kansas City, a nonprofit health foundation, filed suit against HCA Inc. in the Circuit Court of Jackson County, Missouri and alleged that HCA did not fund the level of capital expenditures and uncompensated care agreed to in connection with HCA’s purchase of hospitals from Health Midwest in 2003. The central issue in the case was whether HCA’s construction of new hospitals counted towards its $450 million five-year capital commitments. In addition, the plaintiff alleged that HCA did not make its required capital expenditures in a timely fashion. On January 24, 2013, the court ruled in favor of the plaintiff and awarded at least $162 million. The court also ordered a court-supervised accounting of HCA’s capital expenditures, as well as of expenditures on charity and uncompensated care during the ten years following the purchase. The court also indicated it would award plaintiff attorneys fees, which the parties have stipulated are approximately $12 million for the trial phase. HCA recorded $175 million of legal claim costs in the fourth quarter of 2012 related to this ruling, and consistent with the judge’s order, has been accruing interest on that sum at 9% per annum. On April 25, 2014, the parties stipulated to an additional $78 million shortfall relating to the capital expenditures issue. HCA recorded $78 million of legal claims costs in the first quarter of 2014 as a result of the stipulation, and is accruing interest on that amount at 9% per annum. Pursuant to the terms of the stipulation, the parties have preserved their respective rights to contest the judge’s underlying ruling, whether through motions in the trial court or on appeal. On February 9, 2015, the parties reached an agreement to settle the part of their dispute relating to charity and uncompensated care for $15 million. The foundation is required to use that amount, net of attorneys fees, for charitable activities in the Kansas City area. Final judgment in the case currently is anticipated for sometime in 2015. At this time, we cannot predict what effect, if any, the final judgment could have on the Company. HCA plans to appeal the trial court’s ruling on the capital expenditures issues once the trial court enters judgment.

Leases

Leases	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Leases	NOTE 11 — LEASES
	We lease medical office buildings and certain equipment under operating lease agreements. Commitments relating to noncancellable operating leases for each of the next five years and thereafter are as follows (dollars in millions):
	For the Year Ended December 31,
	2015	$	273
	2016		257
	2017		210
	2018		165
	2019		131
	Thereafter		915
			1,951
	Less sublease income		(20	)
		$	1,931

Capital_Stock

Capital Stock	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Capital Stock	NOTE 12 — CAPITAL STOCK
	The amended and restated certificate of incorporation authorizes the Company to issue up to 1,800,000,000 shares of common stock, and our amended and restated by-laws set the number of directors constituting the board of directors of the Company at not less than three members, the exact number to be determined from time to time by resolution adopted by the affirmative vote of a majority of the total number of directors then in office.
	Share Repurchase Transactions
	During December 2014, the Company entered into an agreement to repurchase 7,612,921 shares of its common stock beneficially owned by affiliates of Bain Capital Investors, LLC at a purchase price of $73.26 per share, the closing price of the Company’s common stock on the New York Stock Exchange on December 5, 2014, less a discount of 1%. The repurchase was made pursuant to the Company’s $1.0 billion repurchase program adopted by the Company’s board of directors in October 2014 which was completed during the fourth quarter of 2014 through market purchases of an additional 6,415,670 shares of our common stock at an average purchase price of $68.96 per share (14,028,591 total shares repurchased at an average purchase price of $71.29 per share).
	During May 2014, certain of the Company’s stockholders, consisting principally affiliates of, or funds sponsored by, Bain Capital Partners, LLC and Kohlberg Kravis Roberts & Co. (the “Selling Stockholders”), sold in an underwritten secondary offering, 15 million shares from their holdings of the Company’s common stock. The Selling Shareholders received all the proceeds from this offering. Concurrent with the closing of the secondary offering, we repurchased approximately $750 million of additional shares (14,554,628 shares) of our common stock from the Selling Stockholders at the net offering price ($51.53 per share).
	During November 2013, the Selling Stockholders sold in an underwritten secondary offering, 30 million shares from their holdings of the Company’s common stock. The Selling Stockholders received all of the proceeds from this offering. Concurrent with the closing of the secondary offering, we repurchased approximately $500 million of additional shares (10,656,436 shares) of our common stock from the Selling Stockholders at the net offering price ($46.92 per share).
	Distributions
	During 2012, our Board of Directors declared three distributions to the Company’s stockholders and holders of certain vested share-based awards. The distributions totaled $6.50 per share and vested share-based award (subject to limitations for certain awards), or $3.142 billion in the aggregate. Pursuant to the terms of our share-based award plans, the holders of nonvested stock options and SARs received $6.50 per share reductions to the exercise price of the applicable share-based awards (subject to certain limitations for certain share-based awards that resulted in deferred distributions for a portion of the declared distribution, which will be paid upon the vesting of the applicable share-based award). The holders of nonvested RSUs will be paid the applicable distribution amounts upon the vesting of the applicable RSUs. There were no distributions declared during 2014 and 2013.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	NOTE 13 — EMPLOYEE BENEFIT PLANS
	We maintain contributory, defined contribution benefit plans that are available to employees who meet certain minimum requirements. Certain of the plans require that we match specified percentages of participant contributions up to certain maximum levels (generally, 100% of the first 3% to 9%, depending upon years of vesting service, of compensation deferred by participants). The cost of these plans totaled $404 million for 2014, $374 million for 2013 and $371 million for 2012. Our contributions are funded periodically during each year.
	We maintain the noncontributory, nonqualified Restoration Plan to provide certain retirement benefits for eligible employees. Eligibility for the Restoration Plan is based upon earning eligible compensation in excess of the Social Security Wage Base and attaining 1,000 or more hours of service during the plan year. Company credits to participants’ account balances (the Restoration Plan is not funded) depend upon participants’ compensation, years of vesting service and certain IRS limitations related to the HCA 401(k) plan. Benefits expense under this plan was $20 million for 2014, $29 million for 2013 and $20 million for 2012. Accrued benefits liabilities under this plan totaled $145 million at December 31, 2014 and $137 million at December 31, 2013.
	We maintain a Supplemental Executive Retirement Plan (“SERP”) for certain executives (the SERP is not funded). The plan is designed to ensure that upon retirement the participant receives the value of a prescribed life annuity from the combination of the SERP and our other benefit plans. Benefits expense under the plan was $31 million for 2014, $43 million for 2013 and $51 million for 2012. Accrued benefits liabilities under this plan totaled $231 million at December 31, 2014 and $214 million at December 31, 2013.
	We maintain defined benefit pension plans which resulted from certain hospital acquisitions in prior years. Benefits expense under these plans was $13 million for 2014, $37 million for 2013, and $49 million for 2012. Accrued benefits liabilities under these plans totaled $172 million at December 31, 2014 and $81 million at December 31, 2013.

Segment_and_Geographic_Informa

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment and Geographic Information	NOTE 14 — SEGMENT AND GEOGRAPHIC INFORMATION
	We operate in one line of business, which is operating hospitals and related health care entities. We operate in two geographically organized groups: the National and American Groups. At December 31, 2014, the National Group included 82 hospitals located in Alaska, California, Florida, southern Georgia, Idaho, Indiana, northern Kentucky, Nevada, New Hampshire, South Carolina, Utah and Virginia, and the American Group included 77 hospitals located in Colorado, northern Georgia, Kansas, southern Kentucky, Louisiana, Mississippi, Missouri, Oklahoma, Tennessee and Texas. We also operate seven hospitals in England, and these facilities are included in the Corporate and other group.
	Adjusted segment EBITDA is defined as income before depreciation and amortization, interest expense, losses (gains) on sales of facilities, losses on retirement of debt, legal claim costs, income taxes and net income attributable to noncontrolling interests. We use adjusted segment EBITDA as an analytical indicator for purposes of allocating resources to geographic areas and assessing their performance. Adjusted segment EBITDA is commonly used as an analytical indicator within the health care industry, and also serves as a measure of leverage capacity and debt service ability. Adjusted segment EBITDA should not be considered as a measure of financial performance under generally accepted accounting principles, and the items excluded from adjusted segment EBITDA are significant components in understanding and assessing financial performance. Because adjusted segment EBITDA is not a measurement determined in accordance with generally accepted accounting principles and is thus susceptible to varying calculations, adjusted segment EBITDA, as presented, may not be comparable to other similarly titled measures of other companies. The geographic distributions of our revenues, equity in earnings of affiliates, adjusted segment EBITDA, depreciation and amortization, assets and goodwill and other intangible assets are summarized in the following table (dollars in millions):
		For the Years Ended December 31,
		2014			2013			2012
	Revenues:
	National Group	$	17,325		$	15,968		$	15,505
	American Group		17,532			16,487			16,115
	Corporate and other		2,061			1,727			1,393
		$	36,918		$	34,182		$	33,013
	Equity in earnings of affiliates:
	National Group	$	(15	)	$	(9	)	$	(9	)
	American Group		(31	)		(24	)		(28	)
	Corporate and other		3			4			1
		$	(43	)	$	(29	)	$	(36	)
	Adjusted segment EBITDA:
	National Group	$	3,847		$	3,301		$	3,325
	American Group		4,025			3,662			3,575
	Corporate and other		(444	)		(389	)		(369	)
		$	7,428		$	6,574		$	6,531
	Depreciation and amortization:
	National Group	$	749		$	718		$	694
	American Group		840			835			816
	Corporate and other		231			200			169
		$	1,820		$	1,753		$	1,679
		For the Years Ended December 31,
		2014			2013			2012
	Adjusted segment EBITDA	$	7,428		$	6,574		$	6,531
	Depreciation and amortization		1,820			1,753			1,679
	Interest expense		1,743			1,848			1,798
	Losses (gains) on sales of facilities		(29	)		10			(15	)
	Losses on retirement of debt		335			17			—
	Legal claim costs		78			—			175
	Income before income taxes	$	3,481		$	2,946		$	2,894
		December 31,
		2014			2013			2012
	Assets:
	National Group	$	10,588		$	10,206		$	9,451
	American Group		15,091			13,911			13,744
	Corporate and other		5,520			4,714			4,880
		$	31,199		$	28,831		$	28,075
		National			American			Corporate			Total
		Group			Group			and Other
	Goodwill and other intangible assets:
	Balance at December 31, 2011	$	991		$	3,988		$	272		$	5,251
	Acquisitions		48			200			40			288
	Foreign currency translation, amortization and other		(4	)		1			3			—
	Balance at December 31, 2012		1,035			4,189			315			5,539
	Acquisitions		68			13			297			378
	Foreign currency translation, amortization and other		1			(12	)		(3	)		(14	)
	Balance at December 31, 2013		1,104			4,190			609			5,903
	Acquisitions		72			428			48			548
	Foreign currency translation, amortization and other		(6	)		(4	)		(25	)		(35	)
	Balance at December 31, 2014	$	1,170		$	4,614		$	632		$	6,416

Other_Comprehensive_Loss

Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Other Comprehensive Loss	NOTE 15 — OTHER COMPREHENSIVE LOSS
	The components of accumulated other comprehensive loss are as follows (dollars in millions):
		Unrealized			Foreign			Defined			Change			Total
		Gains on			Currency			Benefit			in Fair
		Available-			Translation			Plans			Value of
		for-Sale			Adjustments						Derivative
		Securities									Instruments
	Balances at December 31, 2011	$	7		$	(25	)	$	(169	)	$	(253	)	$	(440	)
	Unrealized gains on available-for-sale securities, net of $2 of income taxes		4			—			—			—			4
	Foreign currency translation adjustments, net of $13 of income taxes		—			24			—			—			24
	Defined benefit plans, net of $33 income tax benefit		—			—			(56	)		—			(56	)
	Change in fair value of derivative instruments, net of $55 income tax benefit		—			—			—			(96	)		(96	)
	Expense reclassified into operations from other comprehensive income, net of $17 and $44, respectively, income tax benefits		—			—			29			78			107
	Balances at December 31, 2012		11			(1	)		(196	)		(271	)		(457	)
	Unrealized losses on available-for-sale securities, net of $3 income tax benefit		(4	)		—			—			—			(4	)
	Foreign currency translation adjustments, net of $6 of income taxes		—			12			—			—			12
	Defined benefit plans, net of $50 of income taxes		—			—			84			—			84
	Change in fair value of derivative instruments, net of $1 of income taxes		—			—			—			2			2
	Expense reclassified into operations from other comprehensive income, net of $14 and $49, respectively, income tax benefits		—			—			24			82			106
	Balances at December 31, 2013		7			11			(88	)		(187	)		(257	)
	Unrealized gains on available-for-sale securities, net of $3 of income taxes		6			—			—			—			6
	Foreign currency translation adjustments, net of $27 income tax benefit		—			(47	)		—			—			(47	)
	Defined benefit plans, net of $59 income tax benefit		—			—			(99	)		—			(99	)
	Change in fair value of derivative instruments, net of $13 of income tax benefit		—			—			—			(23	)		(23	)
	Expense reclassified into operations from other comprehensive income, net of $8 and $48, respectively, income tax benefits		—			—			13			84			97
	Balances at December 31, 2014	$	13		$	(36	)	$	(174	)	$	(126	)	$	(323	)

Accrued_Expenses_and_Allowance

Accrued Expenses and Allowance for Doubtful Accounts	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
Accrued Expenses and Allowance for Doubtful Accounts	NOTE 16 — ACCRUED EXPENSES AND ALLOWANCE FOR DOUBTFUL ACCOUNTS
	A summary of other accrued expenses at December 31 follows (dollars in millions):
		2014		2013
	Professional liability risks	$	329	$	330
	Interest		357		392
	Taxes other than income		255		252
	Other		796		939
		$	1,737	$	1,913
	A summary of activity for the allowance of doubtful accounts follows (dollars in millions):
		Balance		Provision		Accounts			Balance
		at		for		Written			at End
		Beginning		Doubtful		off,			of Year
		of Year		Accounts		Net of
						Recoveries
	Allowance for doubtful accounts:
	Year ended December 31, 2012	$	4,106	$	3,770	$	(3,030	)	$	4,846
	Year ended December 31, 2013		4,846		3,858		(3,216	)		5,488
	Year ended December 31, 2014		5,488		3,169		(3,646	)		5,011

Supplemental_Condensed_Consoli

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information	NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION
	On November 22, 2010, HCA Inc. reorganized by creating a new holding company structure. HCA Holdings, Inc. became the parent company, and HCA Inc. became HCA Holdings, Inc.’s 100% owned direct subsidiary. On November 23, 2010, HCA Holdings, Inc. issued $1.525 billion aggregate principal amount of 73/4% senior unsecured notes due 2021. On December 6, 2012, HCA Holdings, Inc. issued $1.000 billion aggregate principal amount of 6.25% senior unsecured notes due 2021. These notes are senior unsecured obligations and are not guaranteed by any of our subsidiaries.
	The senior secured credit facilities and senior secured notes described in Note 9 are jointly and severally, and fully and unconditionally guaranteed by substantially all existing and future, direct and indirect, 100% owned material domestic subsidiaries that are “Unrestricted Subsidiaries” under our Indenture dated December 16, 1993 (except for certain special purpose subsidiaries that only guarantee and pledge their assets under our ABL credit facility).
	Our condensed consolidating balance sheets at December 31, 2014 and 2013 and condensed consolidating statements of comprehensive income and cash flows for each of the three years in the period ended December 31, 2014, segregating HCA Holdings, Inc. issuer, HCA Inc. issuer, the subsidiary guarantors, the subsidiary non-guarantors and eliminations, follow.
	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING COMPREHENSIVE INCOME STATEMENT
	FOR THE YEAR ENDED DECEMBER 31, 2014
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	Revenues before provision for doubtful accounts		$	—		$	—		$	20,533		$	19,554		$	—		$	40,087
	Provision for doubtful accounts			—			—			1,777			1,392			—			3,169
	Revenues			—			—			18,756			18,162			—			36,918
	Salaries and benefits			—			—			8,574			8,067			—			16,641
	Supplies			—			—			3,280			2,982			—			6,262
	Other operating expenses			20			—			3,138			3,597			—			6,755
	Electronic health record incentive income			—			—			(85	)		(40	)		—			(125	)
	Equity in earnings of affiliates			(1,937	)		—			(7	)		(36	)		1,937			(43	)
	Depreciation and amortization			—			—			888			932			—			1,820
	Interest expense			184			2,175			(559	)		(57	)		—			1,743
	Gains on sales of facilities			—			—			(25	)		(4	)		—			(29	)
	Losses on retirement of debt			—			335			—			—			—			335
	Legal claim costs			—			78			—			—			—			78
	Management fees			—			—			(662	)		662			—			—
				(1,733	)		2,588			14,542			16,103			1,937			33,437
	Income (loss) before income taxes			1,733			(2,588	)		4,214			2,059			(1,937	)		3,481
	Provision (benefit) for income taxes			(76	)		(961	)		1,533			612			—			1,108
	Net income (loss)			1,809			(1,627	)		2,681			1,447			(1,937	)		2,373
	Net income attributable to noncontrolling interests			—			—			87			411			—			498
	Net income (loss) attributable to HCA Holdings, Inc.		$	1,809		$	(1,627	)	$	2,594		$	1,036		$	(1,937	)	$	1,875
	Comprehensive income (loss) attributable to HCA Holdings, Inc.		$	1,809		$	(1,566	)	$	2,508		$	995		$	(1,937	)	$	1,809
	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING COMPREHENSIVE INCOME STATEMENT
	FOR THE YEAR ENDED DECEMBER 31, 2013
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	Revenues before provision for doubtful accounts		$	—		$	—		$	20,042		$	17,998		$	—		$	38,040
	Provision for doubtful accounts			—			—			2,262			1,596			—			3,858
	Revenues			—			—			17,780			16,402			—			34,182
	Salaries and benefits			—			—			8,387			7,259			—			15,646
	Supplies			—			—			3,158			2,812			—			5,970
	Other operating expenses			8			(2	)		2,998			3,233			—			6,237
	Electronic health record incentive income			—			—			(142	)		(74	)		—			(216	)
	Equity in earnings of affiliates			(1,875	)		—			(2	)		(27	)		1,875			(29	)
	Depreciation and amortization			—			—			855			898			—			1,753
	Interest expense			184			2,253			(523	)		(66	)		—			1,848
	Losses (gains) on sales of facilities			—			—			20			(10	)		—			10
	Loss on retirement of debt			—			17			—			—			—			17
	Management fees			—			—			(632	)		632			—			—
				(1,683	)		2,268			14,119			14,657			1,875			31,236
	Income (loss) before income taxes			1,683			(2,268	)		3,661			1,745			(1,875	)		2,946
	Provision (benefit) for income taxes			(73	)		(860	)		1,362			521			—			950
	Net income (loss)			1,756			(1,408	)		2,299			1,224			(1,875	)		1,996
	Net income attributable to noncontrolling interests			—			—			69			371			—			440
	Net income (loss) attributable to HCA Holdings, Inc.		$	1,756		$	(1,408	)	$	2,230		$	853		$	(1,875	)	$	1,556
	Comprehensive income (loss) attributable to HCA Holdings, Inc.		$	1,756		$	(1,324	)	$	2,338		$	861		$	(1,875	)	$	1,756
	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING COMPREHENSIVE INCOME STATEMENT
	FOR THE YEAR ENDED DECEMBER 31, 2012
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
Holdings, Inc.			Issuer			Guarantors			Non-			Consolidated
Issuer									Guarantors
Revenues before provision for doubtful accounts		$	—		$	—		$	19,415		$	17,368		$	—		$	36,783
Provision for doubtful accounts			—			—			2,144			1,626			—			3,770
Revenues			—			—			17,271			15,742			—			33,013
Salaries and benefits			—			—			7,959			7,130			—			15,089
Supplies			—			—			2,995			2,722			—			5,717
Other operating expenses			3			5			3,013			3,027			—			6,048
Electronic health record incentive income			—			—			(219	)		(117	)		—			(336	)
Equity in earnings of affiliates			(1,668	)		—			(5	)		(31	)		1,668			(36	)
Depreciation and amortization			—			—			821			858			—			1,679
Interest expense			123			2,167			(468	)		(24	)		—			1,798
Losses (gains) on sales of facilities			—			—			3			(18	)		—			(15	)
Legal claim costs			—			175			—			—			—			175
Management fees			—			—			(569	)		569			—			—
			(1,542	)		2,347			13,530			14,116			1,668			30,119
Income (loss) before income taxes			1,542			(2,347	)		3,741			1,626			(1,668	)		2,894
Provision (benefit) for income taxes			(46	)		(839	)		1,313			460			—			888
Net income (loss)			1,588			(1,508	)		2,428			1,166			(1,668	)		2,006
Net income attributable to noncontrolling interests			—			—			62			339			—			401
Net income (loss) attributable to HCA Holdings, Inc.		$	1,588		$	(1,508	)	$	2,366		$	827		$	(1,668	)	$	1,605
Comprehensive income (loss) attributable to HCA Holdings, Inc.		$	1,588		$	(1,526	)	$	2,339		$	855		$	(1,668	)	$	1,588
HCA HOLDINGS, INC.
CONDENSED CONSOLIDATING BALANCE SHEET
31-Dec-14
(Dollars in millions)
		HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
		Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
		Issuer									Guarantors
ASSETS
Current assets:
Cash and cash equivalents		$	—		$	—		$	87		$	479		$	—		$	566
Accounts receivable, net			—			—			2,812			2,882			—			5,694
Inventories			—			—			756			523			—			1,279
Deferred income taxes			366			—			—			—			—			366
Other			118			—			376			531			—			1,025
			484			—			4,031			4,415			—			8,930
Property and equipment, net			—			—			7,871			6,484			—			14,355
Investments of insurance subsidiaries			—			—			—			494			—			494
Investments in and advances to affiliates			22,293			—			16			149			(22,293	)		165
Goodwill and other intangible assets			—			—			1,705			4,711			—			6,416
Deferred loan costs			26			193			—			—			—			219
Other			435			—			27			158			—			620
		$	23,238		$	193		$	13,650		$	16,411		$	(22,293	)	$	31,199
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
Current liabilities:
Accounts payable		$	1		$	—		$	1,272		$	762		$	—		$	2,035
Accrued salaries			—			—			783			587			—			1,370
Other accrued expenses			45			317			517			858			—			1,737
Long-term debt due within one year			—			231			56			51			—			338
			46			548			2,628			2,258			—			5,480
Long-term debt			2,525			26,317			185			280			—			29,307
Intercompany balances			28,008			(10,261	)		(21,582	)		3,835			—			—
Professional liability risks			—			—			—			1,078			—			1,078
Income taxes and other liabilities			553			487			605			187			—			1,832
			31,132			17,091			(18,164	)		7,638			—			37,697
Stockholders’ (deficit) equity attributable to HCA Holdings, Inc.			(7,894	)		(16,898	)		31,693			7,498			(22,293	)		(7,894	)
Noncontrolling interests			—			—			121			1,275			—			1,396
			(7,894	)		(16,898	)		31,814			8,773			(22,293	)		(6,498	)
		$	23,238		$	193		$	13,650		$	16,411		$	(22,293	)	$	31,199
HCA HOLDINGS, INC.
CONDENSED CONSOLIDATING BALANCE SHEET
31-Dec-13
(Dollars in millions)
		HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
		Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
		Issuer									Guarantors
ASSETS
Current assets:
Cash and cash equivalents		$	—		$	—		$	112		$	302		$	—		$	414
Accounts receivable, net			—			—			2,565			2,643			—			5,208
Inventories			—			—			692			487			—			1,179
Deferred income taxes			489			—			—			—			—			489
Other			—			—			301			446			—			747
			489			—			3,670			3,878			—			8,037
Property and equipment, net			—			—			7,504			6,115			—			13,619
Investments of insurance subsidiaries			—			—			—			448			—			448
Investments in and advances to affiliates			20,356			—			13			108			(20,356	)		121
Goodwill and other intangible assets			—			—			1,695			4,208			—			5,903
Deferred loan costs			30			207			—			—			—			237
Other			250			—			48			168			—			466
		$	21,125		$	207		$	12,930		$	14,925		$	(20,356	)	$	28,831
LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
Current liabilities:
Accounts payable		$	1		$	—		$	1,169		$	633		$	—		$	1,803
Accrued salaries			—			—			694			499			—			1,193
Other accrued expenses			272			353			464			824			—			1,913
Long-term debt due within one year			—			702			45			39			—			786
			273			1,055			2,372			1,995			—			5,695
Long-term debt			2,525			24,701			181			183			—			27,590
Intercompany balances			26,107			(10,513	)		(19,428	)		3,834			—			—
Professional liability risks			—			—			—			949			—			949
Income taxes and other liabilities			490			296			521			218			—			1,525
			29,395			15,539			(16,354	)		7,179			—			35,759
Stockholders’ (deficit) equity attributable to HCA Holdings, Inc.			(8,270	)		(15,332	)		29,185			6,503			(20,356	)		(8,270	)
Noncontrolling interests			—			—			99			1,243			—			1,342
			(8,270	)		(15,332	)		29,284			7,746			(20,356	)		(6,928	)
		$	21,125		$	207		$	12,930		$	14,925		$	(20,356	)	$	28,831
HCA HOLDINGS, INC.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2014
(Dollars in millions)
		HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
		Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
		Issuer									Guarantors
Cash flows from operating activities:
Net income (loss)		$	1,809		$	(1,627	)	$	2,681		$	1,447		$	(1,937	)	$	2,373
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities			(11	)		(12	)		(1,972	)		(1,438	)		—			(3,433	)
Provision for doubtful accounts			—			—			1,777			1,392			—			3,169
Depreciation and amortization			—			—			888			932			—			1,820
Income taxes			(83	)		—			—			—			—			(83	)
Gains on sales of facilities			—			—			(25	)		(4	)		—			(29	)
Losses on retirement of debt			—			335			—			—			—			335
Legal claim costs			—			78			—			—			—			78
Amortization of deferred loan costs			3			39			—			—			—			42
Share-based compensation			163			—			—			—			—			163
Equity in earnings of affiliates			(1,937	)		—			—			—			1,937			—
Other			—			18			—			(5	)		—			13
Net cash (used in) provided by operating activities			(56	)		(1,169	)		3,349			2,324			—			4,448
Cash flows from investing activities:
Purchase of property and equipment			—			—			(1,189	)		(987	)		—			(2,176	)
Acquisition of hospitals and health care entities			—			—			(34	)		(732	)		—			(766	)
Disposal of hospitals and health care entities			—			—			41			10			—			51
Change in investments			—			—			32			(69	)		—			(37	)
Other			—			—			—			10			—			10
Net cash used in investing activities			—			—			(1,150	)		(1,768	)		—			(2,918	)
Cash flows from financing activities:
Issuance of long-term debt			—			5,500			—			2			—			5,502
Net change in revolving bank credit facilities			—			440			—			—			—			440
Repayment of long-term debt			—			(5,086	)		(50	)		(28	)		—			(5,164	)
Distributions to noncontrolling interests			—			—			(65	)		(377	)		—			(442	)
Payment of debt issuance costs			—			(73	)		—			—			—			(73	)
Repurchase of common stock			(1,750	)		—			—			—			—			(1,750	)
Distributions to stockholders			(7	)		—			—			—			—			(7	)
Income tax benefits			134			—			—			—			—			134
Changes in intercompany balances with affiliates, net			1,678			388			(2,109	)		43			—			—
Other			1			—			—			(19	)		—			(18	)
Net cash provided by (used in) financing activities			56			1,169			(2,224	)		(379	)		—			(1,378	)
Change in cash and cash equivalents			—			—			(25	)		177			—			152
Cash and cash equivalents at beginning of period			—			—			112			302			—			414
Cash and cash equivalents at end of period		$	—		$	—		$	87		$	479		$	—		$	566
HCA HOLDINGS, INC.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2013
(Dollars in millions)
		HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
		Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
		Issuer									Guarantors
Cash flows from operating activities:
Net income (loss)		$	1,756		$	(1,408	)	$	2,299		$	1,224		$	(1,875	)	$	1,996
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities			(11	)		17			(2,320	)		(1,958	)		—			(4,272	)
Provision for doubtful accounts			—			—			2,262			1,596			—			3,858
Depreciation and amortization			—			—			855			898			—			1,753
Income taxes			143			—			—			—			—			143
Losses (gains) on sales of facilities			—			—			20			(10	)		—			10
Loss on retirement of debt			—			17			—			—			—			17
Amortization of deferred loan costs			3			52			—			—			—			55
Share-based compensation			113			—			—			—			—			113
Equity in earnings of affiliates			(1,875	)		—			—			—			1,875			—
Other			—			9			2			(4	)		—			7
Net cash provided by (used in) operating activities			129			(1,313	)		3,118			1,746			—			3,680
Cash flows from investing activities:
Purchase of property and equipment			—			—			(921	)		(1,022	)		—			(1,943	)
Acquisition of hospitals and health care entities			—			—			—			(481	)		—			(481	)
Disposal of hospitals and health care entities			—			—			17			16			—			33
Change in investments			—			—			(16	)		52			—			36
Other			—			—			—			9			—			9
Net cash used in investing activities			—			—			(920	)		(1,426	)		—			(2,346	)
Cash flows from financing activities:
Net change in revolving bank credit facilities			—			970			—			—			—			970
Repayment of long-term debt			—			(1,254	)		(34	)		(374	)		—			(1,662	)
Distributions to noncontrolling interests			—			—			(71	)		(364	)		—			(435	)
Payment of debt issuance costs			—			(5	)		—			—			—			(5	)
Repurchase of common stock			(500	)		—			—			—			—			(500	)
Distributions to stockholders			(16	)		—			—			—			—			(16	)
Income tax benefits			113			—			—			—			—			113
Changes in intercompany balances with affiliates, net			342			1,602			(2,364	)		420			—			—
Other			(90	)		—			—			—			—			(90	)
Net cash (used in) provided by financing activities			(151	)		1,313			(2,469	)		(318	)		—			(1,625	)
Change in cash and cash equivalents			(22	)		—			(271	)		2			—			(291	)
Cash and cash equivalents at beginning of period			22			—			383			300			—			705
Cash and cash equivalents at end of period		$	—		$	—		$	112		$	302		$	—		$	414
HCA HOLDINGS, INC.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2012
(Dollars in millions)
		HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
		Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
		Issuer									Guarantors
Cash flows from operating activities:
Net income (loss)		$	1,588		$	(1,508	)	$	2,428		$	1,166		$	(1,668	)	$	2,006
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities			57			(28	)		(1,927	)		(1,765	)		—			(3,663	)
Provision for doubtful accounts			—			—			2,144			1,626			—			3,770
Depreciation and amortization			—			—			821			858			—			1,679
Income taxes			96			—			—			—			—			96
Losses (gains) on sales of facilities			—			—			3			(18	)		—			(15	)
Legal claim costs			—			175			—			—			—			175
Amortization of deferred loan costs			2			60			—			—			—			62
Share-based compensation			56			—			—			—			—			56
Equity in earnings of affiliates			(1,668	)		—			—			—			1,668			—
Other			—			14			(1	)		(4	)		—			9
Net cash provided by (used in) operating activities			131			(1,287	)		3,468			1,863			—			4,175
Cash flows from investing activities:
Purchase of property and equipment			—			—			(1,039	)		(823	)		—			(1,862	)
Acquisition of hospitals and health care entities			—			—			(110	)		(148	)		—			(258	)
Disposal of hospitals and health care entities			—			—			2			28			—			30
Change in investments			—			—			(11	)		27			—			16
Other			—			—			(2	)		13			—			11
Net cash used in investing activities			—			—			(1,160	)		(903	)		—			(2,063	)
Cash flows from financing activities:
Issuances of long-term debt			1,000			3,850			—			—			—			4,850
Net change in revolving bank credit facilities			—			(685	)		—			—			—			(685	)
Repayment of long-term debt			—			(2,309	)		(20	)		(112	)		—			(2,441	)
Distributions to noncontrolling interests			—			—			(60	)		(341	)		—			(401	)
Payment of debt issuance costs			(12	)		(50	)		—			—			—			(62	)
Distributions to stockholders			(3,148	)		—			—			—			—			(3,148	)
Income tax benefits			174			—			—			—			—			174
Changes in intercompany balances with affiliates, net			1,938			481			(1,960	)		(459	)		—			—
Other			(61	)		—			—			(6	)		—			(67	)
Net cash (used in) provided by financing activities			(109	)		1,287			(2,040	)		(918	)		—			(1,780	)
Change in cash and cash equivalents			22			—			268			42			—			332
Cash and cash equivalents at beginning of period			—			—			115			258			—			373
Cash and cash equivalents at end of period		$	22		$	—		$	383		$	300		$	—		$	705
Healthtrust, Inc. — The Hospital Company (“Healthtrust”) is the first-tier subsidiary of HCA Inc. The common stock of Healthtrust has been pledged as collateral for the senior secured credit facilities and senior secured notes described in Note 9. Rule 3-16 of Regulation S-X under the Securities Act requires the filing of separate financial statements for any affiliate of the registrant whose securities constitute a substantial portion of the collateral for any class of securities registered or being registered. We believe the separate financial statements requirement applies to Healthtrust due to the pledge of its common stock as collateral for the senior secured notes. Due to the corporate structure relationship of HCA and Healthtrust, HCA’s operating subsidiaries are also the operating subsidiaries of Healthtrust. The corporate structure relationship, combined with the application of push-down accounting in Healthtrust’s consolidated financial statements related to HCA’s debt and financial instruments, results in the consolidated financial statements of Healthtrust being substantially identical to the consolidated financial statements of HCA. The consolidated financial statements of HCA and Healthtrust present the identical amounts for revenues, expenses, net income, assets, liabilities, total stockholders’ deficit, net cash provided by operating activities, net cash used in investing activities and net cash used in financing activities. Certain individual line items in the HCA consolidated statements of stockholders’ deficit are combined into one line item in the Healthtrust consolidated statements of stockholder’s deficit.
Reconciliations of the HCA Holdings, Inc. Consolidated Statements of Stockholders’ Deficit presentation to the Healthtrust, Inc. — The Hospital Company Consolidated Statements of Stockholder’s Deficit presentation for the years ended December 31, 2014, 2013 and 2012 are as follows (dollars in millions):
		2014			2013			2012
Presentation in HCA Holdings, Inc. Consolidated Statements of Stockholders’ Deficit:
Share-based benefit plans		$	321		$	139		$	169
Other			(6	)		(6	)		(17	)
Presentation in Healthtrust, Inc. — The Hospital Company Consolidated Statements of Stockholder’s Deficit:
Distributions from HCA Holdings, Inc., net of contributions to HCA Holdings, Inc.		$	315		$	133		$	152
Due to the consolidated financial statements of Healthtrust being substantially identical to the consolidated financial statements of HCA, except for the items presented in the table above, the separate consolidated financial statements of Healthtrust are not presented.
HCA HOLDINGS, INC.
QUARTERLY CONSOLIDATED FINANCIAL INFORMATION
(UNAUDITED)
(Dollars in millions)
		2014
		First			Second			Third			Fourth
Revenues		$	8,832		$	9,230		$	9,220		$	9,636
Net income		$	454	(a)	$	632	(b)	$	611	(c)	$	676	(d)
Net income attributable to HCA Holdings, Inc.		$	347	(a)	$	483	(b)	$	518	(c)	$	527	(d)
Basic earnings per share		$	0.78		$	1.1		$	1.2		$	1.22
Diluted earnings per share		$	0.76		$	1.07		$	1.16		$	1.19
		2013
		First			Second			Third			Fourth
Revenues		$	8,440		$	8,450		$	8,456		$	8,836
Net income		$	438	(e)	$	537	(f)	$	467	(g)	$	554	(h)
Net income attributable to HCA Holdings, Inc.		$	344	(e)	$	423	(f)	$	365	(g)	$	424	(h)
Basic earnings per share		$	0.77		$	0.95		$	0.82		$	0.96
Diluted earnings per share		$	0.74		$	0.91		$	0.79		$	0.92
(a)	First quarter results include $13 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $49 million of legal claim costs (See Note 10 of the notes to consolidated financial statements).
(b)	Second quarter results include $7 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $143 million of losses on retirement of debt (See Note 9 of the notes to consolidated financial statements).
(c)	Third quarter results include $9 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements).
(d)	Fourth quarter results include $7 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $68 million of loss on retirement of debt (See Note 9 of the notes to consolidated financial statements).
(e)	First quarter results include $11 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $11 million of loss on retirement of debt (See Note 9 of the notes to consolidated financial statements).
(f)	Second quarter results include $3 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements).
(g)	Third quarter results include $1 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements).
(h)	Fourth quarter results include $2 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements).

Accounting_Policies_Policies

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Basis of Presentation	Basis of Presentation
	The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
	The consolidated financial statements include all subsidiaries and entities controlled by HCA. We generally define “control” as ownership of a majority of the voting interest of an entity. The consolidated financial statements include entities in which we absorb a majority of the entity’s expected losses, receive a majority of the entity’s expected residual returns, or both, as a result of ownership, contractual or other financial interests in the entity. Significant intercompany transactions have been eliminated. Investments in entities we do not control, but in which we have a substantial ownership interest and can exercise significant influence, are accounted for using the equity method.
	We have completed various acquisitions and joint venture transactions. The accounts of these entities have been included in our consolidated financial statements for periods subsequent to our acquisition of controlling interests. The majority of our expenses are “cost of revenue” items. Costs that could be classified as general and administrative include our corporate office costs, which were $285 million, $287 million and $248 million for the years ended December 31, 2014, 2013 and 2012, respectively.
Revenues	Revenues
	Revenues consist primarily of net patient service revenues that are recorded based upon established billing rates less allowances for contractual adjustments. Revenues are recorded during the period the health care services are provided, based upon the estimated amounts due from the patients and third-party payers. Third-party payers include federal and state agencies (under the Medicare and Medicaid programs), managed care health plans (includes plans offered through the health insurance exchanges, beginning in 2014), commercial insurance companies and employers. Estimates of contractual allowances under managed care health plans are based upon the payment terms specified in the related contractual agreements. Contractual payment terms in managed care agreements are generally based upon predetermined rates per diagnosis, per diem rates or discounted fee-for-service rates. Revenues related to uninsured patients and uninsured copayment and deductible amounts for patients who have health care coverage may have discounts applied (uninsured discounts and contractual discounts). We also record a provision for doubtful accounts (based primarily on historical collection experience) related to these uninsured accounts to record net self pay revenues at the estimated amounts we expect to collect. Our revenues from third party payers, the uninsured and other for the years ended December 31, are summarized in the following table (dollars in millions):
		Years Ended December 31,
		2014			Ratio			2013			Ratio			2012			Ratio
	Medicare	$	8,354			22.6	%	$	7,951			23.3	%	$	8,292			25.1	%
	Managed Medicare		3,614			9.8			3,279			9.6			2,954			8.9
	Medicaid		1,848			5			1,480			4.3			1,464			4.4
	Managed Medicaid		1,923			5.2			1,570			4.6			1,504			4.6
	Managed care and other insurers		20,066			54.4			18,654			54.6			17,998			54.5
	International (managed care and other insurers)		1,311			3.6			1,175			3.4			1,060			3.2
			37,116			100.6			34,109			99.8			33,272			100.7
	Uninsured		1,494			4			2,677			7.8			2,580			7.8
	Other		1,477			4			1,254			3.7			931			2.8
	Revenues before provision for doubtful accounts		40,087			108.6			38,040			111.3			36,783			111.3
	Provision for doubtful accounts		(3,169	)		(8.6	)		(3,858	)		(11.3	)		(3,770	)		(11.3	)
	Revenues	$	36,918			100	%	$	34,182			100	%	$	33,013			100	%
	Laws and regulations governing the Medicare and Medicaid programs are complex and subject to interpretation. As a result, there is at least a reasonable possibility recorded estimates will change by a material amount. Estimated reimbursement amounts are adjusted in subsequent periods as cost reports are prepared and filed and as final settlements are determined (in relation to certain government programs, primarily Medicare, this is generally referred to as the “cost report” filing and settlement process). The adjustments to estimated Medicare and Medicaid reimbursement amounts and disproportionate-share funds, which resulted in net increases to revenues, related primarily to cost reports filed during the respective year were $50 million, $41 million and $50 million in 2014, 2013 and 2012, respectively. The adjustments to estimated reimbursement amounts, which resulted in net increases to revenues, related primarily to cost reports filed during previous years were $53 million, $68 million and $242 million in 2014, 2013 and 2012, respectively. The 2012 amount related to cost reports filed during previous years includes two adjustments to Medicare revenues that affected multiple annual cost report periods for the majority of our hospitals (the Rural Floor Provision Settlement increased revenues by approximately $271 million and the implementation of revised Supplemental Security Income ratios reduced revenues by approximately $75 million). Excluding the effect of these Medicare adjustments, the 2012 amount related to cost reports filed during previous years would have been $46 million.
	The Emergency Medical Treatment and Labor Act (“EMTALA”) requires any hospital participating in the Medicare program to conduct an appropriate medical screening examination of every person who presents to the hospital’s emergency room for treatment and, if the individual is suffering from an emergency medical condition, to either stabilize the condition or make an appropriate transfer of the individual to a facility able to handle the condition. The obligation to screen and stabilize emergency medical conditions exists regardless of an individual’s ability to pay for treatment. Federal and state laws and regulations require, and our commitment to providing quality patient care encourages, us to provide services to patients who are financially unable to pay for the health care services they receive. Because we do not pursue collection of amounts determined to qualify as charity care, they are not reported in revenues. Patients treated at hospitals for nonelective care, who have income at or below 200% of the federal poverty level, are eligible for charity care. The federal poverty level is established by the federal government and is based on income and family size. We provide discounts to uninsured patients who do not qualify for Medicaid or charity care. In implementing the uninsured discount policy, we first attempt to qualify uninsured patients for Medicaid, other federal or state assistance or charity care. If an uninsured patient does not qualify for these programs, the uninsured discount is applied.
	To quantify the total impact of and trends related to uninsured accounts, we believe it is beneficial to view charity care, uninsured discounts and the provision for doubtful accounts in combination, rather than each separately. A summary of these amounts for the years ended December 31, follows (dollars in millions):
		2014			Ratio			2013			Ratio			2012			Ratio
	Charity care	$	3,775			24	%	$	3,497			22	%	$	3,093			22	%
	Uninsured discounts		8,999			56			8,210			53			6,978			51
	Provision for doubtful accounts		3,169			20			3,858			25			3,770			27
	Total uncompensated care	$	15,943			100	%	$	15,565			100	%	$	13,841			100	%
	A summary of the estimated cost of total uncompensated care for the years ended December 31, follows (dollars in millions):
		2014			2013			2012
	Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization)	$	31,478		$	29,606		$	28,533
	Cost-to-charges ratio (patient care costs as percentage of gross patient charges)		15.5	%		16.3	%		17.2	%
	Total uncompensated care	$	15,943		$	15,565		$	13,841
	Multiply by the cost-to-charges ratio		15.5	%		16.3	%		17.2	%
	Estimated cost of total uncompensated care	$	2,471		$	2,537		$	2,381
	The sum of charity care, uninsured discounts and the provision for doubtful accounts, as a percentage of the sum of revenues, charity care, uninsured discounts and the provision for doubtful accounts was 30.2% for 2014, 31.3% for 2013 and 29.5% for 2012.
Recent Pronouncements	Recent Pronouncements
	In May 2014, the Financial Accounting Standards Board and the International Accounting Standards Board issued a final, converged, principles-based standard on revenue recognition. Companies across all industries will use a five-step model to recognize revenue from customer contracts. The new standard, which replaces nearly all existing United States Generally Accepted Accounting Principles (“US GAAP”) and International Financial Reporting Standards revenue recognition guidance, will require significant management judgment in addition to changing the way many companies recognize revenue in their financial statements. The standard is effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted under US GAAP. We are evaluating the effects the adoption of this standard will have on our financial statements and financial disclosures.
Cash and Cash Equivalents	Cash and Cash Equivalents
	Cash and cash equivalents include highly liquid investments with a maturity of three months or less when purchased. Our insurance subsidiaries’ cash equivalent investments in excess of the amounts required to pay estimated professional liability claims during the next twelve months are not included in cash and cash equivalents as these funds are not available for general corporate purposes. Carrying values of cash and cash equivalents approximate fair value due to the short-term nature of these instruments.
	Our cash management system provides for daily investment of available balances and the funding of outstanding checks when presented for payment. Outstanding, but unpresented, checks totaling $511 million and $461 million at December 31, 2014 and 2013, respectively, have been included in “accounts payable” in the consolidated balance sheets. Upon presentation for payment, these checks are funded through available cash balances or our credit facility.
Accounts Receivable	Accounts Receivable
	We receive payments for services rendered from federal and state agencies (under the Medicare and Medicaid programs), managed care health plans, commercial insurance companies, employers and patients. We recognize that revenues and receivables from government agencies are significant to our operations, but do not believe there are significant credit risks associated with these government agencies. We do not believe there are any other significant concentrations of revenues from any particular payer that would subject us to any significant credit risks in the collection of our accounts receivable.
	Additions to the allowance for doubtful accounts are made by means of the provision for doubtful accounts. Accounts written off as uncollectible are deducted from the allowance for doubtful accounts and subsequent recoveries are added. The amount of the provision for doubtful accounts is based upon management’s assessment of historical and expected net collections, business and economic conditions, trends in federal, state and private employer health care coverage and other collection indicators. The provision for doubtful accounts and the allowance for doubtful accounts relate to “uninsured” amounts due directly from patients (including copayment and deductible amounts from patients who have health care coverage). Accounts are written off when all reasonable internal and external collection efforts have been performed. We consider the return of an account from the secondary collection agency to be the culmination of our reasonable collection efforts and the timing basis for writing off the account balance. Writeoffs are based upon specific identification and the writeoff process requires a writeoff adjustment entry to the patient accounting system. Management relies on the results of detailed reviews of historical writeoffs and recoveries at facilities that represent a majority of our revenues and accounts receivable (the “hindsight analysis”) as a primary source of information to utilize in estimating the collectibility of our accounts receivable. We perform the hindsight analysis quarterly, utilizing rolling twelve-months accounts receivable collection and writeoff data. At December 31, 2014 and 2013, the allowance for doubtful accounts represented approximately 91.4% and 92.6%, respectively, of the $5.482 billion and $5.927 billion, respectively, patient due accounts receivable balance. The patient due accounts receivable balance represents the estimated uninsured portion of our accounts receivable. The estimated uninsured portion of Medicaid pending and uninsured discount pending accounts is included in our patient due accounts receivable balance. Days revenues in accounts receivable were 54 days, 54 days and 51 days at December 31, 2014, 2013 and 2012, respectively. Adverse changes in general economic conditions, patient accounting service center operations, changes in payer mix or federal or state governmental health care coverage could affect our collection of accounts receivable, cash flows and results of operations.
Inventories	Inventories
	Inventories are stated at the lower of cost (first-in, first-out) or market.
Property and Equipment	Property and Equipment
	Depreciation expense, computed using the straight-line method, was $1.798 billion in 2014, $1.733 billion in 2013 and $1.673 billion in 2012. Buildings and improvements are depreciated over estimated useful lives ranging generally from 10 to 40 years. Estimated useful lives of equipment vary generally from four to 10 years.
	When events, circumstances or operating results indicate the carrying values of certain long-lived assets expected to be held and used, might be impaired, we prepare projections of the undiscounted future cash flows expected to result from the use of the assets and their eventual disposition. If the projections indicate the recorded amounts are not expected to be recoverable, such amounts are reduced to estimated fair value. Fair value may be estimated based upon internal evaluations that include quantitative analyses of revenues and cash flows, reviews of recent sales of similar facilities and independent appraisals.
	Long-lived assets to be disposed of are reported at the lower of their carrying amounts or fair value less costs to sell or close. The estimates of fair value are usually based upon recent sales of similar assets and market responses based upon discussions with and offers received from potential buyers.
Investments of Insurance Subsidiaries	Investments of Insurance Subsidiaries
	At December 31, 2014 and 2013, the investments of our 100% owned insurance subsidiaries were classified as “available-for-sale” as defined in Accounting Standards Codification (“ASC”) No. 320, Investments — Debt and Equity Securities and are recorded at fair value. The investment securities are held for the purpose of providing a funding source to pay liability claims covered by the insurance subsidiaries. We perform quarterly assessments of individual investment securities to determine whether declines in market value are temporary or other-than-temporary. Our investment securities evaluation process involves multiple subjective judgments, often involves estimating the outcome of future events, and requires a significant level of professional judgment in determining whether an impairment has occurred. We evaluate, among other things, the financial position and near term prospects of the issuer, conditions in the issuer’s industry, liquidity of the investment, changes in the amount or timing of expected future cash flows from the investment, and recent downgrades of the issuer by a rating agency, to determine if, and when, a decline in the fair value of an investment below amortized cost is considered other-than-temporary. The length of time and extent to which the fair value of the investment is less than amortized cost and our ability and intent to retain the investment, to allow for any anticipated recovery of the investment’s fair value, are important components of our investment securities evaluation process.
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	Goodwill is not amortized but is subject to annual impairment tests. In addition to the annual impairment review, impairment reviews are performed whenever circumstances indicate a possible impairment may exist. Impairment testing for goodwill is done at the reporting unit level. Reporting units are one level below the business segment level, and our impairment testing is performed at the operating division or market level. We compare the fair value of the reporting unit assets to the carrying amount, on at least an annual basis, to determine if there is potential impairment. If the fair value of the reporting unit assets is less than their carrying value, we compare the fair value of the goodwill to its carrying value. If the fair value of the goodwill is less than its carrying value, an impairment loss is recognized. Fair value of goodwill is estimated based upon internal evaluations of the related long-lived assets for each reporting unit that include quantitative analyses of market multiples, revenues and cash flows and reviews of recent sales of similar facilities. No goodwill impairments were recognized during 2014, 2013 and 2012. Since January 1, 2000, we have recognized total goodwill impairments of $102 million in the aggregate. None of the goodwill impairments related to evaluations of goodwill at the reporting unit level, as all recognized goodwill impairments during this period related to goodwill allocated to asset disposal groups.
	During 2014, goodwill increased by $542 million related to acquisitions and declined by $13 million related to foreign currency translation and other adjustments. During 2013, goodwill increased by $253 million related to acquisitions and declined by $2 million related to foreign currency translation and other adjustments.
	During 2014, identifiable intangible assets declined by $22 million due to amortization. During 2013, identifiable intangible assets increased by $125 million related to acquisitions and declined by $12 million due to amortization. Identifiable intangible assets are amortized over estimated lives ranging generally from three to 10 years. The gross carrying amount of identifiable intangible assets at both December 31, 2014 and 2013 was $162 million, and accumulated amortization was $38 million and $16 million, respectively. During 2014, indefinite-lived identifiable intangible assets increased by $6 million related to acquisitions. During 2013, there were no changes in indefinite-lived identifiable intangible assets. The gross carrying amount of indefinite-lived identifiable intangible assets at December 31, 2014 and 2013 was $275 million and $269 million, respectively. Indefinite-lived identifiable intangible assets are not amortized but are subject to annual impairment tests, and impairment reviews are performed whenever circumstances indicate a possible impairment may exist.
Deferred Loan Costs	Deferred Loan Costs
	Debt issuance costs are amortized based upon the terms of the respective debt obligations. The gross carrying amount of deferred loan costs at December 31, 2014 and 2013 was $375 million and $542 million, respectively, and accumulated amortization was $156 million and $305 million, respectively. Amortization of deferred loan costs is included in interest expense and was $42 million, $55 million and $62 million for 2014, 2013 and 2012, respectively.
Physician Recruiting Agreements	Physician Recruiting Agreements
	In order to recruit physicians to meet the needs of our hospitals and the communities they serve, we enter into minimum revenue guarantee arrangements to assist the recruited physicians during the period they are relocating and establishing their practices. A guarantor is required to recognize, at the inception of a guarantee, a liability for the fair value of the stand-ready obligation undertaken in issuing the guarantee. We expense the total estimated guarantee liability amount at the time the physician recruiting agreement becomes effective as we are not able to justify recording a contract-based asset based upon our analysis of the related control, regulatory and legal considerations.
	The physician recruiting liability amount of $14 million and $15 million at December 31, 2014 and 2013, respectively, represents the amount of expense recognized in excess of payments made through December 31, 2014 and 2013. At December 31, 2014 the maximum amount we could have to pay under all effective minimum revenue guarantees was $44 million.
Professional Liability Claims	Professional Liability Claims
	Reserves for professional liability risks were $1.407 billion and $1.279 billion at December 31, 2014 and 2013, respectively. The current portion of the reserves, $329 million and $330 million at December 31, 2014 and 2013, respectively, is included in “other accrued expenses” in the consolidated balance sheets. Provisions for losses related to professional liability risks were $395 million, $314 million and $331 million for 2014, 2013 and 2012, respectively, and are included in “other operating expenses” in our consolidated income statements. Provisions for losses related to professional liability risks are based upon actuarially determined estimates. Loss and loss expense reserves represent the estimated ultimate net cost of all reported and unreported losses incurred through the respective consolidated balance sheet dates. The reserves for unpaid losses and loss expenses are estimated using individual case-basis valuations and actuarial analyses. Those estimates are subject to the effects of trends in loss severity and frequency. The estimates are continually reviewed and adjustments are recorded as experience develops or new information becomes known. Adjustments to the estimated reserve amounts are included in current operating results. The reserves for professional liability risks cover approximately 2,700 individual claims and 2,600 individual claims at December 31, 2014 and 2013, respectively, and estimates for unreported potential claims. The time period required to resolve these claims can vary depending upon the jurisdiction and whether the claim is settled or litigated. During 2014 and 2013, $268 million and $307 million, respectively, of net payments were made for professional and general liability claims. The estimation of the timing of payments beyond a year can vary significantly. Although considerable variability is inherent in professional liability reserve estimates, we believe the reserves for losses and loss expenses are adequate; however, there can be no assurance the ultimate liability will not exceed our estimates.
	A portion of our professional liability risks is insured through a 100% owned insurance subsidiary. Subject to a $5 million per occurrence self-insured retention (effective January 1, 2015, the self-insured retention increased to $15 million per occurrence), our facilities are insured by our 100% owned insurance subsidiary for losses up to $50 million per occurrence. The insurance subsidiary has obtained reinsurance for professional liability risks generally above a retention level of $15 million per occurrence. We also maintain professional liability insurance with unrelated commercial carriers for losses in excess of amounts insured by our insurance subsidiary.
	The obligations covered by reinsurance and excess insurance contracts are included in the reserves for professional liability risks, as we remain liable to the extent the reinsurers and excess insurance carriers do not meet their obligations under the reinsurance and excess insurance contracts. The amounts receivable under the reinsurance contracts include $20 million and $19 million at December 31, 2014 and 2013, respectively, recorded in “other assets”, and $5 million at both December 31, 2014 and 2013 recorded in “other current assets”.
Financial Instruments	Financial Instruments
	Derivative financial instruments are employed to manage risks, including interest rate and foreign currency exposures, and are not used for trading or speculative purposes. We recognize derivative instruments, such as interest rate swap agreements and foreign exchange contracts, in the consolidated balance sheets at fair value. Changes in the fair value of derivatives are recognized periodically either in earnings or in stockholders’ equity, as a component of other comprehensive income (loss), depending on whether the derivative financial instrument qualifies for hedge accounting, and if so, whether it qualifies as a fair value hedge or a cash flow hedge. Generally, changes in fair values of derivatives accounted for as fair value hedges are recorded in earnings, along with the changes in the fair value of the hedged items related to the hedged risk. Gains and losses on derivatives designated as cash flow hedges, to the extent they are effective, are recorded in other comprehensive income (loss), and subsequently reclassified to earnings to offset the impact of the forecasted transactions when they occur. In the event the forecasted transaction to which a cash flow hedge relates is no longer likely, the amount in other comprehensive income (loss) is recognized in earnings and generally the derivative is terminated. Changes in the fair value of derivatives not qualifying as hedges, and for any portion of a hedge that is ineffective, are reported in earnings.
	The net interest paid or received on interest rate swaps is recognized as interest expense. Gains and losses resulting from the early termination of interest rate swap agreements are deferred and amortized as adjustments to interest expense over the remaining term of the debt originally associated with the terminated swap.
Electronic Health Record Incentive Payments	Electronic Health Record Incentive Payments
	The American Recovery and Reinvestment Act of 2009 provides for Medicare and Medicaid incentive payments for eligible hospitals and professionals that adopt and meaningfully use certified electronic health record (“EHR”) technology. We recognize income related to Medicare and Medicaid incentive payments using a gain contingency model that is based upon when our eligible hospitals have demonstrated meaningful use of certified EHR technology for the applicable period and the cost report information for the full cost report year that will determine the final calculation of the incentive payment is available.
	Medicaid EHR incentive calculations and related payment amounts are based upon prior period cost report information available at the time our eligible hospitals adopt, implement or demonstrate meaningful use of certified EHR technology for the applicable period, and are not subject to revision for cost report data filed for a subsequent period. Thus, incentive income recognition occurs at the point our eligible hospitals adopt, implement or demonstrate meaningful use of certified EHR technology for the applicable period, as the cost report information for the full cost report year that will determine the final calculation of the incentive payment is known at that time.
	Medicare EHR incentive calculations and related initial payment amounts are based upon the most current filed cost report information available at the time our eligible hospitals demonstrate meaningful use of certified EHR technology for the applicable period. However, unlike Medicaid, this initial payment amount will be adjusted based upon an updated calculation using the annual cost report information for the cost report period that began during the applicable payment year. Thus, incentive income recognition occurs at the point our eligible hospitals demonstrate meaningful use of certified EHR technology for the applicable period and the cost report information for the full cost report year that will determine the final calculation of the incentive payment is available.
	We recognized $125 million ($118 million Medicare and $7 million Medicaid), $216 million ($183 million Medicare and $33 million Medicaid) and $336 million ($252 million Medicare and $84 million Medicaid) of electronic health record incentive income during the years ended December 31, 2014, 2013 and 2012, respectively. At December 31, 2014 and 2013, we had $39 million and $78 million, respectively, of deferred EHR incentive income, which represent initial incentive payments received for which EHR incentive income has not been recognized.
Noncontrolling Interests in Consolidated Entities	Noncontrolling Interests in Consolidated Entities
	The consolidated financial statements include all assets, liabilities, revenues and expenses of less than 100% owned entities that we control. Accordingly, we have recorded noncontrolling interests in the earnings and equity of such entities.
Reclassifications	Reclassifications
	Certain prior year amounts have been reclassified to conform to the 2014 presentation.
Earning Per Share	We compute basic earnings per share using the weighted average number of common shares outstanding. We compute diluted earnings per share using the weighted average number of common shares outstanding plus the dilutive effect of outstanding stock options, SARs and RSUs, computed using the treasury stock method.
Fair Value Measurements and Disclosures	Accounting Standards Codification 820, Fair Value Measurements and Disclosures (“ASC 820”) emphasizes fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, ASC 820 utilizes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).
	Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input significant to the fair value measurement in its entirety. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.
Cash Traded Investments	Cash Traded Investments
	Our cash traded investments are generally classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. Certain types of cash traded instruments are classified within Level 3 of the fair value hierarchy because they trade infrequently and therefore have little or no price transparency. The valuation of these securities involves management’s judgment, after consideration of market factors and the absence of market transparency, market liquidity and observable inputs. Our valuation models derived fair market values compared to tax-equivalent yields of other securities of similar credit worthiness and similar effective maturities.
Derivative Financial Instruments	Derivative Financial Instruments
	We have entered into interest rate swap agreements to manage our exposure to fluctuations in interest rates. The valuation of these instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. We incorporate credit valuation adjustments to reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements of these instruments.
	Although we determined the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. We assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions, and at December 31, 2014 and 2013, we determined the credit valuation adjustments were not significant to the overall valuation of our derivatives.
Interest Rate Swaps [Member]
Financial Instruments	Interest Rate Swap Agreements
	We have entered into interest rate swap agreements to manage our exposure to fluctuations in interest rates. These swap agreements involve the exchange of fixed and variable rate interest payments between two parties based on common notional principal amounts and maturity dates. Pay-fixed interest rate swaps effectively convert LIBOR indexed variable rate obligations to fixed interest rate obligations. The interest payments under these agreements are settled on a net basis. The net interest payments, based on the notional amounts in these agreements, generally match the timing of the related liabilities, for the interest rate swap agreements which have been designated as cash flow hedges. The notional amounts of the swap agreements represent amounts used to calculate the exchange of cash flows and are not our assets or liabilities. Our credit risk related to these agreements is considered low because the swap agreements are with creditworthy financial institutions.

Accounting_Policies_Tables

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Schedule of Revenues from Third Party Payers and Uninsured	Our revenues from third party payers, the uninsured and other for the years ended December 31, are summarized in the following table (dollars in millions):
		Years Ended December 31,
		2014			Ratio			2013			Ratio			2012			Ratio
	Medicare	$	8,354			22.6	%	$	7,951			23.3	%	$	8,292			25.1	%
	Managed Medicare		3,614			9.8			3,279			9.6			2,954			8.9
	Medicaid		1,848			5			1,480			4.3			1,464			4.4
	Managed Medicaid		1,923			5.2			1,570			4.6			1,504			4.6
	Managed care and other insurers		20,066			54.4			18,654			54.6			17,998			54.5
	International (managed care and other insurers)		1,311			3.6			1,175			3.4			1,060			3.2
			37,116			100.6			34,109			99.8			33,272			100.7
	Uninsured		1,494			4			2,677			7.8			2,580			7.8
	Other		1,477			4			1,254			3.7			931			2.8
	Revenues before provision for doubtful accounts		40,087			108.6			38,040			111.3			36,783			111.3
	Provision for doubtful accounts		(3,169	)		(8.6	)		(3,858	)		(11.3	)		(3,770	)		(11.3	)
	Revenues	$	36,918			100	%	$	34,182			100	%	$	33,013			100	%
Schedule of Revenue Deductions Related to Uninsured Accounts	A summary of these amounts for the years ended December 31, follows (dollars in millions):
		2014			Ratio			2013			Ratio			2012			Ratio
	Charity care	$	3,775			24	%	$	3,497			22	%	$	3,093			22	%
	Uninsured discounts		8,999			56			8,210			53			6,978			51
	Provision for doubtful accounts		3,169			20			3,858			25			3,770			27
	Total uncompensated care	$	15,943			100	%	$	15,565			100	%	$	13,841			100	%
Schedule of Estimated Cost of Uncompensated Care	A summary of the estimated cost of total uncompensated care for the years ended December 31, follows (dollars in millions):
		2014			2013			2012
	Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization)	$	31,478		$	29,606		$	28,533
	Cost-to-charges ratio (patient care costs as percentage of gross patient charges)		15.5	%		16.3	%		17.2	%
	Total uncompensated care	$	15,943		$	15,565		$	13,841
	Multiply by the cost-to-charges ratio		15.5	%		16.3	%		17.2	%
	Estimated cost of total uncompensated care	$	2,471		$	2,537		$	2,381

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Fair Value of Each Stock Option Award is Estimated on Grant Date, Using Option Valuation Models	The expected life is an estimate of the number of years a share-based award will be held before it is exercised.
		2014			2013			2012
	Risk-free interest rate		1.96	%		1.2	%		1.18	%
	Expected volatility		37	%		45	%		50	%
	Expected life, in years		6.25			6.25			6.25
	Expected dividend yield		—			—			—
Schedule of Stock Option Activity	Information regarding Time Stock Options and SARs and Performance Stock Options and SARs activity during 2014, 2013 and 2012 is summarized below (share amounts in thousands):
		Time			Performance			Total			Weighted		Weighted		Aggregate
		Stock			Stock			Stock			Average		Average		Intrinsic Value
		Options			Options and			Options			Exercise		Remaining		(dollars in millions)
		and			SARs			and			Price		Contractual Term
		SARs						SARs
	Options outstanding, December 31, 2011		21,739			24,573			46,312		$	9.26
	Granted		3,174			3,174			6,348			27.03
	Exercised		(5,530	)		(5,128	)		(10,658	)		7.6
	Cancelled		(192	)		(568	)		(760	)		9.49
	Options outstanding, December 31, 2012		19,191			22,051			41,242			11.56
	Granted		2,432			2,432			4,864			37.49
	Exercised		(4,498	)		(5,843	)		(10,341	)		8.49
	Cancelled		(316	)		(263	)		(579	)		25.5
	Options and SARs outstanding, December 31, 2013		16,809			18,377			35,186			15.82
	Granted		1,723			1,722			3,445			48.56
	Exercised		(3,322	)		(5,234	)		(8,556	)		9.15
	Cancelled		(159	)		(121	)		(280	)		29.54
	Options and SARs outstanding, December 31, 2014		15,051			14,744			29,795			21.39		5.3 years	$	1,549
	Options and SARs exercisable, December 31, 2014		10,102			9,796			19,898		$	13.79		3.9 years	$	1,186
Schedule of Restricted Stock Units Activity	Information regarding Time RSUs and Performance RSUs activity during 2014, 2013 and 2012 is summarized below (share amounts in thousands):
		Time RSUs			Performance			Total RSUs			Weighted
					RSUs						Average
											Grant
											Date Fair
											Value
	RSUs outstanding, December 31, 2011		80			—			80		$	30
	Granted		3,162			1,485			4,647			26.98
	Vested		(4	)		—			(4	)		30
	Cancelled		(164	)		(75	)		(239	)		26.99
	RSUs outstanding, December 31, 2012		3,074			1,410			4,484			27.03
	Granted		3,305			1,554			4,859			37.43
	Vested		(831	)		(352	)		(1,183	)		27.3
	Cancelled		(449	)		(213	)		(662	)		31.91
	RSUs outstanding, December 31, 2013		5,099			2,399			7,498			33.3
	Granted		2,603			1,229			3,832			48.53
	Vested		(1,423	)		(692	)		(2,115	)		32.56
	Cancelled		(384	)		(155	)		(539	)		38.3
	RSUs outstanding, December 31, 2014		5,895			2,781			8,676			39.89

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The provision for income taxes consists of the following (dollars in millions):
		2014			2013			2012
	Current:
	Federal	$	916		$	827		$	604
	State		102			86			58
	Foreign		52			44			43
	Deferred:
	Federal		3			(53	)		167
	State		(5	)		20			(8	)
	Foreign		40			26			24
		$	1,108		$	950		$	888
Schedule of Reconciliation of Federal Statutory Rate to Effective Income Tax Rate	A reconciliation of the federal statutory rate to the effective income tax rate follows:
		2014			2013			2012
	Federal statutory rate		35	%		35	%		35	%
	State income taxes, net of federal tax benefit		2.3			2.3			2.2
	Change in liability for uncertain tax positions		0.5			0.5			—
	Tax exempt interest income		(0.1	)		(0.2	)		(0.2	)
	Other items, net		(0.5	)		0.3			(1.4	)
	Effective income tax rate on income applicable to HCA Holdings, Inc.		37.2			37.9			35.6
	Income attributable to noncontrolling interests from consolidated partnerships		(5.4	)		(5.7	)		(4.9	)
	Effective income tax rate on income before income taxes		31.8	%		32.2	%		30.7	%
Schedule of Deferred Tax Assets and Liabilities	A summary of the items comprising the deferred tax assets and liabilities at December 31 follows (dollars in millions):
		2014						2013
		Assets			Liabilities			Assets			Liabilities
	Depreciation and fixed asset basis differences	$	—		$	226		$	—		$	229
	Allowances for professional liability and other risks		403			—			365			—
	Accounts receivable		341			—			423			—
	Compensation		272			—			240			—
	Other		756			745			638			698
		$	1,772		$	971		$	1,666		$	927
Schedule of Activity Related to Unrecognized Tax Benefits	The following table summarizes the activity related to our unrecognized tax benefits (dollars in millions):
		2014			2013
	Balance at January 1	$	445		$	425
	Additions based on tax positions related to the current year		3			21
	Additions for tax positions of prior years		72			25
	Reductions for tax positions of prior years		(11	)		(18	)
	Settlements		(1	)		(5	)
	Lapse of applicable statutes of limitations		(5	)		(3	)
	Balance at December 31	$	503		$	445

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Computations of Basic and Diluted Earnings Per Share	The following table sets forth the computations of basic and diluted earnings per share for the years ended December 31, 2014, 2013 and 2012 (dollars in millions, except per share amounts, and shares in thousands):
		2014		2013		2012
	Net income attributable to HCA Holdings, Inc	$	1,875	$	1,556	$	1,605
	Weighted average common shares outstanding		435,668		445,066		440,178
	Effect of dilutive incremental shares		14,684		16,847		19,225
	Shares used for diluted earnings per share		450,352		461,913		459,403
	Earnings per share:
	Basic earnings per share	$	4.3	$	3.5	$	3.65
	Diluted earnings per share	$	4.16	$	3.37	$	3.49

Investments_of_Insurance_Subsi1

Investments of Insurance Subsidiaries (Tables)	12 Months Ended
	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Schedule of Investments	A summary of the insurance subsidiaries’ investments at December 31 follows (dollars in millions):
		2014
		Amortized		Unrealized					Fair
		Cost		Amounts					Value
				Gains		Losses
	Debt securities:
	States and municipalities	$	477	$	18	$	(1	)	$	494
	Money market funds		61		—		—			61
			538		18		(1	)		555
	Equity securities		1		2		—			3
		$	539	$	20	$	(1	)		558
	Amounts classified as current assets									(64	)
	Investment carrying value								$	494
		2013
		Amortized		Unrealized					Fair
		Cost		Amounts					Value
				Gains		Losses
	Debt securities:
	States and municipalities	$	404	$	11	$	(3	)	$	412
	Money market funds		94		—		—			94
			498		11		(3	)		506
	Equity securities		2		2		—			4
		$	500	$	13	$	(3	)		510
	Amounts classified as current assets									(62	)
	Investment carrying value								$	448
Schedule of Maturities of Investments	Scheduled maturities of investments in debt securities at December 31, 2014 were as follows (dollars in millions):
		Amortized		Fair
		Cost		Value
	Due in one year or less	$	82	$	82
	Due after one year through five years		229		234
	Due after five years through ten years		109		116
	Due after ten years		118		123
		$	538	$	555

Financial_Instruments_Tables

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Swap Agreements Designated as Cash Flow Hedges	The following table sets forth our interest rate swap agreements, which have been designated as cash flow hedges, at December 31, 2014 (dollars in millions):
		Notional		Maturity Date		Fair
		Amount				Value
	Pay-fixed interest rate swaps	$	3,000		December 2016	$	(166	)
	Pay-fixed interest rate swaps		1,000		December 2017		(33	)
Effect of Interest Rate on Results of Operations	The following table presents the effect of our interest rate swaps on our results of operations for the year ended December 31, 2014 (dollars in millions):
	Derivatives in Cash Flow Hedging Relationships	Amount of Loss		Location of Loss		Amount of Loss
		Recognized in OCI on		Reclassified from		Reclassified from
		Derivatives, Net of  Tax		Accumulated OCI		Accumulated OCI
				into Operations		into Operations
	Interest rate swaps	$	23		Interest expense	$	132

Assets_and_Liabilities_Measure1

Assets and Liabilities Measured at Fair Value (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables summarize our assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and 2013, aggregated by the level in the fair value hierarchy within which those measurements fall (dollars in millions):
		December 31, 2014
		Fair Value			Fair Value Measurements Using
					Quoted Prices in			Significant Other			Significant
					Active Markets for			Observable Inputs			Unobservable Inputs
					Identical Assets			(Level 2)			(Level 3)
					and Liabilities
					(Level 1)
	Assets:
	Investments of insurance subsidiaries:
	Debt securities:
	States and municipalities	$	494		$	—		$	488		$	6
	Money market funds		61			61			—			—
			555			61			488			6
	Equity securities		3			3			—			—
	Investments of insurance subsidiaries		558			64			488			6
	Less amounts classified as current assets		(64	)		(61	)		(3	)		—
		$	494		$	3		$	485		$	6
	Liabilities:
	Interest rate swaps (Income taxes and other liabilities)	$	199		$	—		$	199		$	—
		December 31, 2013
		Fair Value			Fair Value Measurements Using
					Quoted Prices in			Significant Other			Significant
					Active Markets for			Observable Inputs			Unobservable Inputs
					Identical Assets			(Level 2)			(Level 3)
					and Liabilities
					(Level 1)
	Assets:
	Investments of insurance subsidiaries:
	Debt securities:
	States and municipalities	$	412		$	—		$	405		$	7
	Money market funds		94			94			—			—
			506			94			405			7
	Equity securities		4			3			—			1
	Investments of insurance subsidiaries		510			97			405			8
	Less amounts classified as current assets		(62	)		(62	)		—			—
		$	448		$	35		$	405		$	8
	Liabilities:
	Interest rate swaps (Income taxes and other liabilities)	$	295		$	—		$	295		$	—
Schedule Related to Investments of Insurance Subsidiaries at Fair Value	The following table summarizes the activity related to the investments of our insurance subsidiaries which have fair value measurements based on significant unobservable inputs (Level 3) during the year ended December 31, 2014 (dollars in millions):
	Asset balances at December 31, 2013	$	8
	Settlements		(2	)
	Asset balances at December 31, 2014	$	6

LongTerm_Debt_Tables

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	A summary of long-term debt at December 31, including related interest rates at December 31, 2014, follows (dollars in millions):
		2014		2013
	Senior secured asset-based revolving credit facility (effective interest rate of 1.7%)	$	2,880	$	2,440
	Senior secured revolving credit facility		—		—
	Senior secured term loan facilities (effective interest rate of 5.2%)		5,517		5,598
	Senior secured notes (effective interest rate of 5.5%)		11,100		9,695
	Other senior secured debt (effective interest rate of 6.3%)		573		448
	Senior secured debt		20,070		18,181
	Senior unsecured notes (effective interest rate of 7.2%)		9,575		10,195
	Total debt (average life of 6.1 years, rates averaging 5.6%)		29,645		28,376
	Less amounts due within one year		338		786
		$	29,307	$	27,590

Leases_Tables

Leases (Tables)	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Schedule of Commitments Relating to Noncancellable Operating Leases	Commitments relating to noncancellable operating leases for each of the next five years and thereafter are as follows (dollars in millions):
	For the Year Ended December 31,
	2015	$	273
	2016		257
	2017		210
	2018		165
	2019		131
	Thereafter		915
			1,951
	Less sublease income		(20	)
		$	1,931

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule of Geographic Distributions of Revenues, Equity in Earnings of Affiliates, Adjusted Segment EBITDA, Depreciation and Amortization and Assets	The geographic distributions of our revenues, equity in earnings of affiliates, adjusted segment EBITDA, depreciation and amortization, assets and goodwill and other intangible assets are summarized in the following table (dollars in millions):
		For the Years Ended December 31,
		2014			2013			2012
	Revenues:
	National Group	$	17,325		$	15,968		$	15,505
	American Group		17,532			16,487			16,115
	Corporate and other		2,061			1,727			1,393
		$	36,918		$	34,182		$	33,013
	Equity in earnings of affiliates:
	National Group	$	(15	)	$	(9	)	$	(9	)
	American Group		(31	)		(24	)		(28	)
	Corporate and other		3			4			1
		$	(43	)	$	(29	)	$	(36	)
	Adjusted segment EBITDA:
	National Group	$	3,847		$	3,301		$	3,325
	American Group		4,025			3,662			3,575
	Corporate and other		(444	)		(389	)		(369	)
		$	7,428		$	6,574		$	6,531
	Depreciation and amortization:
	National Group	$	749		$	718		$	694
	American Group		840			835			816
	Corporate and other		231			200			169
		$	1,820		$	1,753		$	1,679
		For the Years Ended December 31,
		2014			2013			2012
	Adjusted segment EBITDA	$	7,428		$	6,574		$	6,531
	Depreciation and amortization		1,820			1,753			1,679
	Interest expense		1,743			1,848			1,798
	Losses (gains) on sales of facilities		(29	)		10			(15	)
	Losses on retirement of debt		335			17			—
	Legal claim costs		78			—			175
	Income before income taxes	$	3,481		$	2,946		$	2,894
		December 31,
		2014			2013			2012
	Assets:
	National Group	$	10,588		$	10,206		$	9,451
	American Group		15,091			13,911			13,744
	Corporate and other		5,520			4,714			4,880
		$	31,199		$	28,831		$	28,075
		National			American			Corporate			Total
		Group			Group			and Other
	Goodwill and other intangible assets:
	Balance at December 31, 2011	$	991		$	3,988		$	272		$	5,251
	Acquisitions		48			200			40			288
	Foreign currency translation, amortization and other		(4	)		1			3			—
	Balance at December 31, 2012		1,035			4,189			315			5,539
	Acquisitions		68			13			297			378
	Foreign currency translation, amortization and other		1			(12	)		(3	)		(14	)
	Balance at December 31, 2013		1,104			4,190			609			5,903
	Acquisitions		72			428			48			548
	Foreign currency translation, amortization and other		(6	)		(4	)		(25	)		(35	)
	Balance at December 31, 2014	$	1,170		$	4,614		$	632		$	6,416

Other_Comprehensive_Loss_Table

Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss are as follows (dollars in millions):
		Unrealized			Foreign			Defined			Change			Total
		Gains on			Currency			Benefit			in Fair
		Available-			Translation			Plans			Value of
		for-Sale			Adjustments						Derivative
		Securities									Instruments
	Balances at December 31, 2011	$	7		$	(25	)	$	(169	)	$	(253	)	$	(440	)
	Unrealized gains on available-for-sale securities, net of $2 of income taxes		4			—			—			—			4
	Foreign currency translation adjustments, net of $13 of income taxes		—			24			—			—			24
	Defined benefit plans, net of $33 income tax benefit		—			—			(56	)		—			(56	)
	Change in fair value of derivative instruments, net of $55 income tax benefit		—			—			—			(96	)		(96	)
	Expense reclassified into operations from other comprehensive income, net of $17 and $44, respectively, income tax benefits		—			—			29			78			107
	Balances at December 31, 2012		11			(1	)		(196	)		(271	)		(457	)
	Unrealized losses on available-for-sale securities, net of $3 income tax benefit		(4	)		—			—			—			(4	)
	Foreign currency translation adjustments, net of $6 of income taxes		—			12			—			—			12
	Defined benefit plans, net of $50 of income taxes		—			—			84			—			84
	Change in fair value of derivative instruments, net of $1 of income taxes		—			—			—			2			2
	Expense reclassified into operations from other comprehensive income, net of $14 and $49, respectively, income tax benefits		—			—			24			82			106
	Balances at December 31, 2013		7			11			(88	)		(187	)		(257	)
	Unrealized gains on available-for-sale securities, net of $3 of income taxes		6			—			—			—			6
	Foreign currency translation adjustments, net of $27 income tax benefit		—			(47	)		—			—			(47	)
	Defined benefit plans, net of $59 income tax benefit		—			—			(99	)		—			(99	)
	Change in fair value of derivative instruments, net of $13 of income tax benefit		—			—			—			(23	)		(23	)
	Expense reclassified into operations from other comprehensive income, net of $8 and $48, respectively, income tax benefits		—			—			13			84			97
	Balances at December 31, 2014	$	13		$	(36	)	$	(174	)	$	(126	)	$	(323	)

Accrued_Expenses_and_Allowance1

Accrued Expenses and Allowance for Doubtful Accounts (Tables)	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
Summary of Other Accrued Expenses	A summary of other accrued expenses at December 31 follows (dollars in millions):
		2014		2013
	Professional liability risks	$	329	$	330
	Interest		357		392
	Taxes other than income		255		252
	Other		796		939
		$	1,737	$	1,913
Summary of Allowance of Doubtful Accounts	A summary of activity for the allowance of doubtful accounts follows (dollars in millions):
		Balance		Provision		Accounts			Balance
		at		for		Written			at End
		Beginning		Doubtful		off,			of Year
		of Year		Accounts		Net of
						Recoveries
	Allowance for doubtful accounts:
	Year ended December 31, 2012	$	4,106	$	3,770	$	(3,030	)	$	4,846
	Year ended December 31, 2013		4,846		3,858		(3,216	)		5,488
	Year ended December 31, 2014		5,488		3,169		(3,646	)		5,011

Supplemental_Condensed_Consoli1

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information (Tables)	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
Schedule of Condensed Consolidating Comprehensive Income Statement	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING COMPREHENSIVE INCOME STATEMENT
	FOR THE YEAR ENDED DECEMBER 31, 2014
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	Revenues before provision for doubtful accounts		$	—		$	—		$	20,533		$	19,554		$	—		$	40,087
	Provision for doubtful accounts			—			—			1,777			1,392			—			3,169
	Revenues			—			—			18,756			18,162			—			36,918
	Salaries and benefits			—			—			8,574			8,067			—			16,641
	Supplies			—			—			3,280			2,982			—			6,262
	Other operating expenses			20			—			3,138			3,597			—			6,755
	Electronic health record incentive income			—			—			(85	)		(40	)		—			(125	)
	Equity in earnings of affiliates			(1,937	)		—			(7	)		(36	)		1,937			(43	)
	Depreciation and amortization			—			—			888			932			—			1,820
	Interest expense			184			2,175			(559	)		(57	)		—			1,743
	Gains on sales of facilities			—			—			(25	)		(4	)		—			(29	)
	Losses on retirement of debt			—			335			—			—			—			335
	Legal claim costs			—			78			—			—			—			78
	Management fees			—			—			(662	)		662			—			—
				(1,733	)		2,588			14,542			16,103			1,937			33,437
	Income (loss) before income taxes			1,733			(2,588	)		4,214			2,059			(1,937	)		3,481
	Provision (benefit) for income taxes			(76	)		(961	)		1,533			612			—			1,108
	Net income (loss)			1,809			(1,627	)		2,681			1,447			(1,937	)		2,373
	Net income attributable to noncontrolling interests			—			—			87			411			—			498
	Net income (loss) attributable to HCA Holdings, Inc.		$	1,809		$	(1,627	)	$	2,594		$	1,036		$	(1,937	)	$	1,875
	Comprehensive income (loss) attributable to HCA Holdings, Inc.		$	1,809		$	(1,566	)	$	2,508		$	995		$	(1,937	)	$	1,809
	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING COMPREHENSIVE INCOME STATEMENT
	FOR THE YEAR ENDED DECEMBER 31, 2013
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	Revenues before provision for doubtful accounts		$	—		$	—		$	20,042		$	17,998		$	—		$	38,040
	Provision for doubtful accounts			—			—			2,262			1,596			—			3,858
	Revenues			—			—			17,780			16,402			—			34,182
	Salaries and benefits			—			—			8,387			7,259			—			15,646
	Supplies			—			—			3,158			2,812			—			5,970
	Other operating expenses			8			(2	)		2,998			3,233			—			6,237
	Electronic health record incentive income			—			—			(142	)		(74	)		—			(216	)
	Equity in earnings of affiliates			(1,875	)		—			(2	)		(27	)		1,875			(29	)
	Depreciation and amortization			—			—			855			898			—			1,753
	Interest expense			184			2,253			(523	)		(66	)		—			1,848
	Losses (gains) on sales of facilities			—			—			20			(10	)		—			10
	Loss on retirement of debt			—			17			—			—			—			17
	Management fees			—			—			(632	)		632			—			—
				(1,683	)		2,268			14,119			14,657			1,875			31,236
	Income (loss) before income taxes			1,683			(2,268	)		3,661			1,745			(1,875	)		2,946
	Provision (benefit) for income taxes			(73	)		(860	)		1,362			521			—			950
	Net income (loss)			1,756			(1,408	)		2,299			1,224			(1,875	)		1,996
	Net income attributable to noncontrolling interests			—			—			69			371			—			440
	Net income (loss) attributable to HCA Holdings, Inc.		$	1,756		$	(1,408	)	$	2,230		$	853		$	(1,875	)	$	1,556
	Comprehensive income (loss) attributable to HCA Holdings, Inc.		$	1,756		$	(1,324	)	$	2,338		$	861		$	(1,875	)	$	1,756
	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING COMPREHENSIVE INCOME STATEMENT
	FOR THE YEAR ENDED DECEMBER 31, 2012
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	Revenues before provision for doubtful accounts		$	—		$	—		$	19,415		$	17,368		$	—		$	36,783
	Provision for doubtful accounts			—			—			2,144			1,626			—			3,770
Revenues			—			—			17,271			15,742			—			33,013
Salaries and benefits			—			—			7,959			7,130			—			15,089
Supplies			—			—			2,995			2,722			—			5,717
Other operating expenses			3			5			3,013			3,027			—			6,048
Electronic health record incentive income			—			—			(219	)		(117	)		—			(336	)
Equity in earnings of affiliates			(1,668	)		—			(5	)		(31	)		1,668			(36	)
Depreciation and amortization			—			—			821			858			—			1,679
Interest expense			123			2,167			(468	)		(24	)		—			1,798
Losses (gains) on sales of facilities			—			—			3			(18	)		—			(15	)
Legal claim costs			—			175			—			—			—			175
Management fees			—			—			(569	)		569			—			—
			(1,542	)		2,347			13,530			14,116			1,668			30,119
Income (loss) before income taxes			1,542			(2,347	)		3,741			1,626			(1,668	)		2,894
Provision (benefit) for income taxes			(46	)		(839	)		1,313			460			—			888
Net income (loss)			1,588			(1,508	)		2,428			1,166			(1,668	)		2,006
Net income attributable to noncontrolling interests			—			—			62			339			—			401
Net income (loss) attributable to HCA Holdings, Inc.		$	1,588		$	(1,508	)	$	2,366		$	827		$	(1,668	)	$	1,605
Comprehensive income (loss) attributable to HCA Holdings, Inc.		$	1,588		$	(1,526	)	$	2,339		$	855		$	(1,668	)	$	1,588
Schedule of Condensed Consolidating Balance Sheet	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING BALANCE SHEET
	31-Dec-14
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	ASSETS
	Current assets:
	Cash and cash equivalents		$	—		$	—		$	87		$	479		$	—		$	566
	Accounts receivable, net			—			—			2,812			2,882			—			5,694
	Inventories			—			—			756			523			—			1,279
	Deferred income taxes			366			—			—			—			—			366
	Other			118			—			376			531			—			1,025
				484			—			4,031			4,415			—			8,930
	Property and equipment, net			—			—			7,871			6,484			—			14,355
	Investments of insurance subsidiaries			—			—			—			494			—			494
	Investments in and advances to affiliates			22,293			—			16			149			(22,293	)		165
	Goodwill and other intangible assets			—			—			1,705			4,711			—			6,416
	Deferred loan costs			26			193			—			—			—			219
	Other			435			—			27			158			—			620
			$	23,238		$	193		$	13,650		$	16,411		$	(22,293	)	$	31,199
	LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
	Current liabilities:
	Accounts payable		$	1		$	—		$	1,272		$	762		$	—		$	2,035
	Accrued salaries			—			—			783			587			—			1,370
	Other accrued expenses			45			317			517			858			—			1,737
	Long-term debt due within one year			—			231			56			51			—			338
				46			548			2,628			2,258			—			5,480
	Long-term debt			2,525			26,317			185			280			—			29,307
	Intercompany balances			28,008			(10,261	)		(21,582	)		3,835			—			—
	Professional liability risks			—			—			—			1,078			—			1,078
	Income taxes and other liabilities			553			487			605			187			—			1,832
				31,132			17,091			(18,164	)		7,638			—			37,697
	Stockholders’ (deficit) equity attributable to HCA Holdings, Inc.			(7,894	)		(16,898	)		31,693			7,498			(22,293	)		(7,894	)
	Noncontrolling interests			—			—			121			1,275			—			1,396
				(7,894	)		(16,898	)		31,814			8,773			(22,293	)		(6,498	)
			$	23,238		$	193		$	13,650		$	16,411		$	(22,293	)	$	31,199
	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING BALANCE SHEET
	31-Dec-13
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	ASSETS
	Current assets:
	Cash and cash equivalents		$	—		$	—		$	112		$	302		$	—		$	414
	Accounts receivable, net			—			—			2,565			2,643			—			5,208
	Inventories			—			—			692			487			—			1,179
	Deferred income taxes			489			—			—			—			—			489
	Other			—			—			301			446			—			747
				489			—			3,670			3,878			—			8,037
	Property and equipment, net			—			—			7,504			6,115			—			13,619
	Investments of insurance subsidiaries			—			—			—			448			—			448
	Investments in and advances to affiliates			20,356			—			13			108			(20,356	)		121
	Goodwill and other intangible assets			—			—			1,695			4,208			—			5,903
	Deferred loan costs			30			207			—			—			—			237
	Other			250			—			48			168			—			466
			$	21,125		$	207		$	12,930		$	14,925		$	(20,356	)	$	28,831
	LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
	Current liabilities:
	Accounts payable		$	1		$	—		$	1,169		$	633		$	—		$	1,803
	Accrued salaries			—			—			694			499			—			1,193
Other accrued expenses			272			353			464			824			—			1,913
Long-term debt due within one year			—			702			45			39			—			786
			273			1,055			2,372			1,995			—			5,695
Long-term debt			2,525			24,701			181			183			—			27,590
Intercompany balances			26,107			(10,513	)		(19,428	)		3,834			—			—
Professional liability risks			—			—			—			949			—			949
Income taxes and other liabilities			490			296			521			218			—			1,525
			29,395			15,539			(16,354	)		7,179			—			35,759
Stockholders’ (deficit) equity attributable to HCA Holdings, Inc.			(8,270	)		(15,332	)		29,185			6,503			(20,356	)		(8,270	)
Noncontrolling interests			—			—			99			1,243			—			1,342
			(8,270	)		(15,332	)		29,284			7,746			(20,356	)		(6,928	)
		$	21,125		$	207		$	12,930		$	14,925		$	(20,356	)	$	28,831
Schedule of Condensed Consolidating Statement of Cash Flows	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	FOR THE YEAR ENDED DECEMBER 31, 2014
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	Cash flows from operating activities:
	Net income (loss)		$	1,809		$	(1,627	)	$	2,681		$	1,447		$	(1,937	)	$	2,373
	Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
	Change in operating assets and liabilities			(11	)		(12	)		(1,972	)		(1,438	)		—			(3,433	)
	Provision for doubtful accounts			—			—			1,777			1,392			—			3,169
	Depreciation and amortization			—			—			888			932			—			1,820
	Income taxes			(83	)		—			—			—			—			(83	)
	Gains on sales of facilities			—			—			(25	)		(4	)		—			(29	)
	Losses on retirement of debt			—			335			—			—			—			335
	Legal claim costs			—			78			—			—			—			78
	Amortization of deferred loan costs			3			39			—			—			—			42
	Share-based compensation			163			—			—			—			—			163
	Equity in earnings of affiliates			(1,937	)		—			—			—			1,937			—
	Other			—			18			—			(5	)		—			13
	Net cash (used in) provided by operating activities			(56	)		(1,169	)		3,349			2,324			—			4,448
	Cash flows from investing activities:
	Purchase of property and equipment			—			—			(1,189	)		(987	)		—			(2,176	)
	Acquisition of hospitals and health care entities			—			—			(34	)		(732	)		—			(766	)
	Disposal of hospitals and health care entities			—			—			41			10			—			51
	Change in investments			—			—			32			(69	)		—			(37	)
	Other			—			—			—			10			—			10
	Net cash used in investing activities			—			—			(1,150	)		(1,768	)		—			(2,918	)
	Cash flows from financing activities:
	Issuance of long-term debt			—			5,500			—			2			—			5,502
	Net change in revolving bank credit facilities			—			440			—			—			—			440
	Repayment of long-term debt			—			(5,086	)		(50	)		(28	)		—			(5,164	)
	Distributions to noncontrolling interests			—			—			(65	)		(377	)		—			(442	)
	Payment of debt issuance costs			—			(73	)		—			—			—			(73	)
	Repurchase of common stock			(1,750	)		—			—			—			—			(1,750	)
	Distributions to stockholders			(7	)		—			—			—			—			(7	)
	Income tax benefits			134			—			—			—			—			134
	Changes in intercompany balances with affiliates, net			1,678			388			(2,109	)		43			—			—
	Other			1			—			—			(19	)		—			(18	)
	Net cash provided by (used in) financing activities			56			1,169			(2,224	)		(379	)		—			(1,378	)
	Change in cash and cash equivalents			—			—			(25	)		177			—			152
	Cash and cash equivalents at beginning of period			—			—			112			302			—			414
	Cash and cash equivalents at end of period		$	—		$	—		$	87		$	479		$	—		$	566
	HCA HOLDINGS, INC.
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	FOR THE YEAR ENDED DECEMBER 31, 2013
	(Dollars in millions)
			HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
			Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
			Issuer									Guarantors
	Cash flows from operating activities:
	Net income (loss)		$	1,756		$	(1,408	)	$	2,299		$	1,224		$	(1,875	)	$	1,996
	Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
	Change in operating assets and liabilities			(11	)		17			(2,320	)		(1,958	)		—			(4,272	)
	Provision for doubtful accounts			—			—			2,262			1,596			—			3,858
	Depreciation and amortization			—			—			855			898			—			1,753
	Income taxes			143			—			—			—			—			143
	Losses (gains) on sales of facilities			—			—			20			(10	)		—			10
	Loss on retirement of debt			—			17			—			—			—			17
	Amortization of deferred loan costs			3			52			—			—			—			55
	Share-based compensation			113			—			—			—			—			113
	Equity in earnings of affiliates			(1,875	)		—			—			—			1,875			—
	Other			—			9			2			(4	)		—			7
Net cash provided by (used in) operating activities			129			(1,313	)		3,118			1,746			—			3,680
Cash flows from investing activities:
Purchase of property and equipment			—			—			(921	)		(1,022	)		—			(1,943	)
Acquisition of hospitals and health care entities			—			—			—			(481	)		—			(481	)
Disposal of hospitals and health care entities			—			—			17			16			—			33
Change in investments			—			—			(16	)		52			—			36
Other			—			—			—			9			—			9
Net cash used in investing activities			—			—			(920	)		(1,426	)		—			(2,346	)
Cash flows from financing activities:
Net change in revolving bank credit facilities			—			970			—			—			—			970
Repayment of long-term debt			—			(1,254	)		(34	)		(374	)		—			(1,662	)
Distributions to noncontrolling interests			—			—			(71	)		(364	)		—			(435	)
Payment of debt issuance costs			—			(5	)		—			—			—			(5	)
Repurchase of common stock			(500	)		—			—			—			—			(500	)
Distributions to stockholders			(16	)		—			—			—			—			(16	)
Income tax benefits			113			—			—			—			—			113
Changes in intercompany balances with affiliates, net			342			1,602			(2,364	)		420			—			—
Other			(90	)		—			—			—			—			(90	)
Net cash (used in) provided by financing activities			(151	)		1,313			(2,469	)		(318	)		—			(1,625	)
Change in cash and cash equivalents			(22	)		—			(271	)		2			—			(291	)
Cash and cash equivalents at beginning of period			22			—			383			300			—			705
Cash and cash equivalents at end of period		$	—		$	—		$	112		$	302		$	—		$	414
HCA HOLDINGS, INC.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2012
(Dollars in millions)
		HCA			HCA Inc.			Subsidiary			Subsidiary			Eliminations			Condensed
		Holdings, Inc.			Issuer			Guarantors			Non-						Consolidated
		Issuer									Guarantors
Cash flows from operating activities:
Net income (loss)		$	1,588		$	(1,508	)	$	2,428		$	1,166		$	(1,668	)	$	2,006
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities			57			(28	)		(1,927	)		(1,765	)		—			(3,663	)
Provision for doubtful accounts			—			—			2,144			1,626			—			3,770
Depreciation and amortization			—			—			821			858			—			1,679
Income taxes			96			—			—			—			—			96
Losses (gains) on sales of facilities			—			—			3			(18	)		—			(15	)
Legal claim costs			—			175			—			—			—			175
Amortization of deferred loan costs			2			60			—			—			—			62
Share-based compensation			56			—			—			—			—			56
Equity in earnings of affiliates			(1,668	)		—			—			—			1,668			—
Other			—			14			(1	)		(4	)		—			9
Net cash provided by (used in) operating activities			131			(1,287	)		3,468			1,863			—			4,175
Cash flows from investing activities:
Purchase of property and equipment			—			—			(1,039	)		(823	)		—			(1,862	)
Acquisition of hospitals and health care entities			—			—			(110	)		(148	)		—			(258	)
Disposal of hospitals and health care entities			—			—			2			28			—			30
Change in investments			—			—			(11	)		27			—			16
Other			—			—			(2	)		13			—			11
Net cash used in investing activities			—			—			(1,160	)		(903	)		—			(2,063	)
Cash flows from financing activities:
Issuances of long-term debt			1,000			3,850			—			—			—			4,850
Net change in revolving bank credit facilities			—			(685	)		—			—			—			(685	)
Repayment of long-term debt			—			(2,309	)		(20	)		(112	)		—			(2,441	)
Distributions to noncontrolling interests			—			—			(60	)		(341	)		—			(401	)
Payment of debt issuance costs			(12	)		(50	)		—			—			—			(62	)
Distributions to stockholders			(3,148	)		—			—			—			—			(3,148	)
Income tax benefits			174			—			—			—			—			174
Changes in intercompany balances with affiliates, net			1,938			481			(1,960	)		(459	)		—			—
Other			(61	)		—			—			(6	)		—			(67	)
Net cash (used in) provided by financing activities			(109	)		1,287			(2,040	)		(918	)		—			(1,780	)
Change in cash and cash equivalents			22			—			268			42			—			332
Cash and cash equivalents at beginning of period			—			—			115			258			—			373
Cash and cash equivalents at end of period		$	22		$	—		$	383		$	300		$	—		$	705
Schedule of Consolidated Statements of Stockholder's Deficit	The Hospital Company Consolidated Statements of Stockholder’s Deficit presentation for the years ended December 31, 2014, 2013 and 2012 are as follows (dollars in millions):
			2014			2013			2012
	Presentation in HCA Holdings, Inc. Consolidated Statements of Stockholders’ Deficit:
	Share-based benefit plans		$	321		$	139		$	169
	Other			(6	)		(6	)		(17	)
	Presentation in Healthtrust, Inc. — The Hospital Company Consolidated Statements of Stockholder’s Deficit:
	Distributions from HCA Holdings, Inc., net of contributions to HCA Holdings, Inc.		$	315		$	133		$	152
Schedule of Quarterly Consolidated Financial Information	HCA HOLDINGS, INC.
	QUARTERLY CONSOLIDATED FINANCIAL INFORMATION
	(UNAUDITED)
	(Dollars in millions)
			2014
			First			Second			Third			Fourth
	Revenues		$	8,832		$	9,230		$	9,220		$	9,636
	Net income		$	454	(a)	$	632	(b)	$	611	(c)	$	676	(d)
	Net income attributable to HCA Holdings, Inc.		$	347	(a)	$	483	(b)	$	518	(c)	$	527	(d)
	Basic earnings per share		$	0.78		$	1.1		$	1.2		$	1.22
	Diluted earnings per share		$	0.76		$	1.07		$	1.16		$	1.19
			2013
			First			Second			Third			Fourth
	Revenues		$	8,440		$	8,450		$	8,456		$	8,836
	Net income		$	438	(e)	$	537	(f)	$	467	(g)	$	554	(h)
	Net income attributable to HCA Holdings, Inc.		$	344	(e)	$	423	(f)	$	365	(g)	$	424	(h)
	Basic earnings per share		$	0.77		$	0.95		$	0.82		$	0.96
	Diluted earnings per share		$	0.74		$	0.91		$	0.79		$	0.92
	(a)	First quarter results include $13 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $49 million of legal claim costs (See Note 10 of the notes to consolidated financial statements).
	(b)	Second quarter results include $7 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $143 million of losses on retirement of debt (See Note 9 of the notes to consolidated financial statements).
	(c)	Third quarter results include $9 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements).
	(d)	Fourth quarter results include $7 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $68 million of loss on retirement of debt (See Note 9 of the notes to consolidated financial statements).
	(e)	First quarter results include $11 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $11 million of loss on retirement of debt (See Note 9 of the notes to consolidated financial statements).
	(f)	Second quarter results include $3 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements).
	(g)	Third quarter results include $1 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements).
	(h)	Fourth quarter results include $2 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements).

Accounting_Policies_Additional

Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended			180 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 01, 2015
	Hospital	Claims		Hospital
	Claim			Claim
	State			State
	Surgery_Center			Surgery_Center
	Claims
Summary Of Significant Accounting Policies [Line Items]
Number of owned and operated hospitals	166			166
Number of freestanding surgery centers	113			113
Number of facilities locations	20			20
General and administrative expense	$285,000,000	$287,000,000	$248,000,000
Adjustments to estimated reimbursement filed during respective year	50,000,000	41,000,000	50,000,000
Adjustments to estimated reimbursement filed during previous years	53,000,000	68,000,000	242,000,000
Revenue related to operations in previous year			46,000,000
Percentage of the sum of revenues, uninsured discounts and charity care	30.20%	31.30%	29.50%
Outstanding checks unpresented for payment	511,000,000	461,000,000		511,000,000
Allowance for doubtful accounts percentage of accounts receivable	91.40%	92.60%
Allowance for doubtful accounts	5,482,000,000	5,927,000,000		5,482,000,000
Days revenues in accounts receivable	54 days	54 days	51 days
Depreciation expense	1,798,000,000	1,733,000,000	1,673,000,000
Goodwill impairments	0	0	0	102,000,000
Intangible assets increased	6,000,000	125,000,000		6,000,000
Intangible assets decreased	22,000,000	12,000,000
Gross carrying amount of intangible assets	162,000,000	162,000,000
Accumulated amortization of intangible assets	38,000,000	16,000,000		38,000,000
Gross carrying amount of indefinite-lived intangible assets	275,000,000	269,000,000		275,000,000
Deferred loan costs	375,000,000	542,000,000		375,000,000
Deferred loan costs, accumulated amortization	156,000,000	305,000,000		156,000,000
Amortization of deferred loan costs	42,000,000	55,000,000	62,000,000
Physician recruiting liability amounts	14,000,000	15,000,000		14,000,000
Maximum amount pay under effective minimum revenue guarantees	44,000,000			44,000,000
Reserves for professional liability risks	1,407,000,000	1,279,000,000		1,407,000,000
Current portion of professional liability risks reserves	329,000,000	330,000,000		329,000,000
Provisions for losses related to professional liability risks	395,000,000	314,000,000	331,000,000
Reserves for professional liability risks cover individual claims	2,700	2,600		2,700
Net payments of professional and general liability claims	268,000,000	307,000,000
Insurance subsidiary ownership percentage	100.00%			100.00%
Self-insured retention amount per occurrence	5,000,000
Maximum amount losses per occurrence	50,000,000
Reinsurance for professional liability risks retention level of amount per occurrence	15,000,000
Amounts receivable under reinsurance contracts recorded in other assets	20,000,000	19,000,000		20,000,000
Amounts receivable under reinsurance contracts recorded in other current assets	5,000,000	5,000,000		5,000,000
Electronic health record incentive income	125,000,000	216,000,000	336,000,000
Incentive income, Medicaid	7,000,000	33,000,000	84,000,000
Incentive income, Medicare	118,000,000	183,000,000	252,000,000
Electronic health record deferred incentive income	39,000,000	78,000,000		39,000,000
Rural Floor Provision Settlement Effect [Member]
Summary Of Significant Accounting Policies [Line Items]
Adjustments to Medicare revenues	271,000,000
Implementation of Revised Supplemental Security Income Ratios [Member]
Summary Of Significant Accounting Policies [Line Items]
Adjustments to Medicare revenues	75,000,000
Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Self-insured retention amount per occurrence					15,000,000
Acquisitions [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill increase (decrease)	542,000,000	253,000,000
Foreign Currency Translation And Other [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill increase (decrease)	($13,000,000)	($2,000,000)
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of income of federal poverty level eligible for charity care	200.00%
Finite lived intangible asset useful life	10 years
Maximum [Member] | Building and Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives in years	40 years
Maximum [Member] | Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives in years	10 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite lived intangible asset useful life	3 years
Minimum [Member] | Building and Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives in years	10 years
Minimum [Member] | Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives in years	4 years

Accounting_Policies_Schedule_o

Accounting Policies - Schedule of Revenues from Third Party Payers and Uninsured (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$37,116	$34,109	$33,272
Uninsured									1,494	2,677	2,580
Other									1,477	1,254	931
Revenues before provision for doubtful accounts									40,087	38,040	36,783
Provision for doubtful accounts									-3,169	-3,858	-3,770
Revenues	9,636	9,220	9,230	8,832	8,836	8,456	8,450	8,440	36,918	34,182	33,013
Revenues from third party payers, Ratio									100.60%	99.80%	100.70%
Uninsured, Ratio									4.00%	7.80%	7.80%
Other, Ratio									4.00%	3.70%	2.80%
Revenues before provision for doubtful accounts, Ratio									108.60%	111.30%	111.30%
Revenues before provision for doubtful accounts, Ratio									108.60%	111.30%	111.30%
Provision for doubtful accounts, Ratio									-8.60%	-11.30%	-11.30%
Revenues ratio from third party payers									100.00%	100.00%	100.00%
Medicare [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									8,354	7,951	8,292
Revenues from third party payers, Ratio									22.60%	23.30%	25.10%
Managed Medicare [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									3,614	3,279	2,954
Revenues from third party payers, Ratio									9.80%	9.60%	8.90%
Medicaid [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									1,848	1,480	1,464
Revenues from third party payers, Ratio									5.00%	4.30%	4.40%
Managed Medicaid [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									1,923	1,570	1,504
Revenues from third party payers, Ratio									5.20%	4.60%	4.60%
Managed Care and Other Insurers [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									20,066	18,654	17,998
Revenues from third party payers, Ratio									54.40%	54.60%	54.50%
International (Managed Care and Other Insurers) [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$1,311	$1,175	$1,060
Revenues from third party payers, Ratio									3.60%	3.40%	3.20%

Accounting_Policies_Schedule_o1

Accounting Policies - Schedule of Revenue Deductions Related to Uninsured Accounts (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Regulatory Assets [Abstract]
Charity care	$3,775	$3,497	$3,093
Uninsured discounts	8,999	8,210	6,978
Provision for doubtful accounts	3,169	3,858	3,770
Total uncompensated care	$15,943	$15,565	$13,841
Charity care, ratio	24.00%	22.00%	22.00%
Uninsured discounts, ratio	56.00%	53.00%	51.00%
Provision for doubtful accounts, ratio	20.00%	25.00%	27.00%
Total uncompensated care, ratio	100.00%	100.00%	100.00%

Accounting_Policies_Schedule_o2

Accounting Policies - Schedule of Estimated Cost of Uncompensated Care (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization)	$31,478	$29,606	$28,533
Cost-to-charges ratio (patient care costs as percentage of gross patient charges)	15.50%	16.30%	17.20%
Total uncompensated care	15,943	15,565	13,841
Multiply by the cost-to-charges ratio	15.50%	16.30%	17.20%
Estimated cost of total uncompensated care	$2,471	$2,537	$2,381

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Fair Value of Stock Options Granted	$19.13	$16.68	$13.16
Total Intrinsic Value of Stock Options	$412,000,000
Unrecognized Compensation Cost Related to Nonvested Awards	110,000,000
Value of distribution per share			$6.50
Value of distribution	0	0	3,142,000,000
Reduction of non vested stock options on exercise price of share-based awards			$6.50
Employee Stock Purchase Plan ("ESPP") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock were reserved for issuance	11,772,000			12,000,000
Compensation expense	2,000,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost Related to Nonvested Awards	$243,000,000
Restricted Stock Units [Member] | 2006 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Stock Options	3,832,100	4,858,800
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Stock Options	3,445,000	4,864,000
Vested, Stock Options	19,803,200
Shares Available for Future Grants	27,220,900

ShareBased_Compensation_Schedu

Share-Based Compensation - Schedule of Fair Value of Each Stock Option Award is Estimated on Grant Date, Using Option Valuation Models (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free interest rate	1.96%	1.20%	1.18%
Expected volatility	37.00%	45.00%	50.00%
Expected life, in years	6 years 3 months	6 years 3 months	6 years 3 months
Expected dividend yield	0.00%	0.00%	0.00%

ShareBased_Compensation_Schedu1

Share-Based Compensation - Schedule of Stock Option Activity (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options outstanding, Weighted Average Exercise Price, Beginning Balance	$15.82	$11.56	$9.26
Granted, Weighted Average Exercise Price	$48.56	$37.49	$27.03
Exercised, Weighted Average Exercise Price	$9.15	$8.49	$7.60
Cancelled, Weighted Average Exercise Price	$29.54	$25.50	$9.49
Stock Options outstanding, Weighted Average Exercise Price, Ending Balance	$21.39	$15.82	$11.56
Options exercisable, Weighted Average Exercise Price	$13.79
Options outstanding, Weighted Average Remaining Contractual Term	5 years 3 months 18 days
Options exercisable, Weighted Average Remaining Contractual Term	3 years 10 months 24 days
Options outstanding, Aggregate Intrinsic Value	$1,549
Options exercisable, Aggregate Intrinsic Value	$1,186
Time Based Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Beginning Balance	16,809,000	19,191,000	21,739,000
Granted, Stock Options	1,723,000	2,432,000	3,174,000
Exercised, Stock Options	-3,322,000	-4,498,000	-5,530,000
Cancelled, Stock Options	-159,000	-316,000	-192,000
Stock Options Outstanding, Ending Balance	15,051,000	16,809,000	19,191,000
Stock Options Exercisable, Ending Balance	10,102,000
Performance Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Beginning Balance	18,377,000	22,051,000	24,573,000
Granted, Stock Options	1,722,000	2,432,000	3,174,000
Exercised, Stock Options	-5,234,000	-5,843,000	-5,128,000
Cancelled, Stock Options	-121,000	-263,000	-568,000
Stock Options Outstanding, Ending Balance	14,744,000	18,377,000	22,051,000
Stock Options Exercisable, Ending Balance	9,796,000
Total Stock Options and Stock SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Beginning Balance	35,186,000	41,242,000	46,312,000
Granted, Stock Options	3,445,000	4,864,000	6,348,000
Exercised, Stock Options	-8,556,000	-10,341,000	-10,658,000
Cancelled, Stock Options	-280,000	-579,000	-760,000
Stock Options Outstanding, Ending Balance	29,795,000	35,186,000	41,242,000
Stock Options Exercisable, Ending Balance	19,898,000

ShareBased_Compensation_Schedu2

Share-Based Compensation - Schedule of Restricted Stock Units Activity (Detail) (Restricted Stock Units [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Outstanding, Beginning Balance	7,498	4,484	80
RSUs Outstanding, Granted	3,832	4,859	4,647
RSUs Outstanding, Vested	-2,115	-1,183	-4
RSUs Outstanding, Cancelled	-539	-662	-239
RSUs Outstanding, Ending Balance	8,676	7,498	4,484
Weighted Average Grant Date Fair Value, RSUs, Beginning balance	$33.30	$27.03	$30
Weighted Average Grant Date Fair Value, RSUs, Granted	$48.53	$37.43	$26.98
Weighted Average Grant Date Fair Value, RSUs, Vested	$32.56	$27.30	$30
Weighted Average Grant Date Fair Value, RSUs, Cancelled	$38.30	$31.91	$26.99
Weighted Average Grant Date Fair Value, RSUs, Ending balance	$39.89	$33.30	$27.03
Time Based Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Outstanding, Beginning Balance	5,099	3,074	80
RSUs Outstanding, Granted	2,603	3,305	3,162
RSUs Outstanding, Vested	-1,423	-831	-4
RSUs Outstanding, Cancelled	-384	-449	-164
RSUs Outstanding, Ending Balance	5,895	5,099	3,074
Performance Based Stock Options and RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Outstanding, Beginning Balance	2,399	1,410
RSUs Outstanding, Granted	1,229	1,554	1,485
RSUs Outstanding, Vested	-692	-352
RSUs Outstanding, Cancelled	-155	-213	-75
RSUs Outstanding, Ending Balance	2,781	2,399	1,410

Acquisitions_and_Dispositions_

Acquisitions and Dispositions - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Hospital	Hospital	Hospital
Business Acquisition [Line Items]
Number of hospitals acquired	3	3	1
Proceeds from sale of business	$51	$33	$30
Hospitals [Member]
Business Acquisition [Line Items]
Cash paid for acquisition	161	146	58
Nonhospital Health Care [Member]
Business Acquisition [Line Items]
Cash paid for acquisition	605	335	200
Other [Member]
Business Acquisition [Line Items]
Fair value of identifiable net assets of acquired entities	542	253	232
Real Estate [Member]
Business Acquisition [Line Items]
Pretax gain (loss) on sales of business	29	-10	15
Proceeds from sale of business	51	33	30
Gain (loss) on sale of business after tax	$18	($7)	$9

Income_Taxes_Schedule_of_Provi

Income Taxes - Schedule of Provision for Income Taxes (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current, Federal	$916	$827	$604
Current, State	102	86	58
Current, Foreign	52	44	43
Deferred, Federal	3	-53	167
Deferred, State	-5	20	-8
Deferred, Foreign	40	26	24
Provision for income taxes	$1,108	$950	$888

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Reductions in interest related to taxing authority examinations	$9	$4	$53
Reductions in interest related to taxing authority examinations, net of tax	6	3	33
Income before income taxes, Foreign	238	187	178
State net operating loss carryforwards	5
Federal net operating loss carryforwards	120
Liability for unrecognized tax benefits	548	462
Unrecognized tax benefits, accrued interest	58	30
Deferred tax assets, reductions	13	13
Unrecognized tax benefits that would impact effective tax rate	$205	$160
State and Local Jurisdiction [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration date	2015
State and Local Jurisdiction [Member] | Maximum [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration date	2030

Income_Taxes_Schedule_of_Recon

Income Taxes - Schedule of Reconciliation of Federal Statutory Rate to Effective Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	2.30%	2.30%	2.20%
Change in liability for uncertain tax positions	0.50%	0.50%
Tax exempt interest income	-0.10%	-0.20%	-0.20%
Other items, net	-0.50%	0.30%	-1.40%
Effective income tax rate on income applicable to HCA Holdings, Inc.	37.20%	37.90%	35.60%
Income attributable to noncontrolling interests from consolidated partnerships	-5.40%	-5.70%	-4.90%
Effective income tax rate on income before income taxes	31.80%	32.20%	30.70%

Income_Taxes_Schedule_of_Defer

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Income Tax Disclosure [Abstract]
Depreciation and fixed asset basis differences, Assets	$0	$0
Allowances for professional liability and other risks, Assets	403	365
Accounts receivable, Assets	341	423
Compensation, Assets	272	240
Other, Assets	756	638
Deferred tax assets	1,772	1,666
Depreciation and fixed asset basis differences, Liabilities	226	229
Allowances for professional liability and other risks, Liabilities	0	0
Accounts receivable, Liabilities	0	0
Compensation, Liabilities	0	0
Other, Liabilities	745	698
Deferred tax liabilities	$971	$927

Income_Taxes_Schedule_of_Activ

Income Taxes - Schedule of Activity Related to Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Beginning Balance	$445	$425
Additions based on tax positions related to the current year	3	21
Additions for tax positions of prior years	72	25
Reductions for tax positions of prior years	-11	-18
Settlements	-1	-5
Lapse of applicable statutes of limitations	-5	-3
Ending Balance	$503	$445

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	1 Months Ended		3 Months Ended
	31-May-14	Nov. 30, 2013	Dec. 31, 2014
Earnings Per Share [Abstract]
Common stock repurchased	14,554,628	10,656,436	14,028,591

Earnings_Per_Share_Schedule_of

Earnings Per Share - Schedule of Computations of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Net income attributable to HCA Holdings, Inc	$527	$518	$483	$347	$424	$365	$423	$344	$1,875	$1,556	$1,605
Weighted average common shares outstanding									435,668	445,066	440,178
Effect of dilutive incremental shares									14,684	16,847	19,225
Shares used for diluted earnings per share									450,352	461,913	459,403
Basic earnings per share	$1.22	$1.20	$1.10	$0.78	$0.96	$0.82	$0.95	$0.77	$4.30	$3.50	$3.65
Diluted earnings per share	$1.19	$1.16	$1.07	$0.76	$0.92	$0.79	$0.91	$0.74	$4.16	$3.37	$3.49

Investments_of_Insurance_Subsi2

Investments of Insurance Subsidiaries - Schedule of Investments (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	$539	$500
Unrealized Amounts, Gains	20	13
Unrealized Amounts, Losses	-1	-3
Fair Value	558	510
Amounts classified as current assets	-64	-62
Investment carrying value	494	448
Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	538	498
Unrealized Amounts, Gains	18	11
Unrealized Amounts, Losses	-1	-3
Fair Value	555	506
Debt Securities [Member] | States and Municipalities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	477	404
Unrealized Amounts, Gains	18	11
Unrealized Amounts, Losses	-1	-3
Fair Value	494	412
Debt Securities [Member] | Money Market Funds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	61	94
Fair Value	61	94
Equity Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	1	2
Unrealized Amounts, Gains	2	2
Fair Value	$3	$4

Investments_of_Insurance_Subsi3

Investments of Insurance Subsidiaries - Schedule of Maturities of Investments (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Amortized Cost and Fair Value Debt Securities [Abstract]
Due in one year or less, Amortized Cost	$82
Due after one year through five years, Amortized Cost	229
Due after five years through ten years, Amortized Cost	109
Due after ten years, Amortized Cost	118
Amortized Cost, Total	538
Due in one year or less, Fair Value	82
Due after one year through five years, Fair Value	234
Due after five years through ten years, Fair Value	116
Due after ten years, Fair Value	123
Fair Value, Total	$555

Investments_of_Insurance_Subsi4

Investments of Insurance Subsidiaries - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
Amortized Cost and Fair Value Debt Securities [Abstract]
Available for sale securities expected maturity of debt securities	3 years 9 months 18 days
Available for sale securities average scheduled maturity	5 years 7 months 6 days

Financial_Instruments_Schedule

Financial Instruments - Schedule of Interest Rate Swap Agreements Designated as Cash Flow Hedges (Detail) (Pay-Fixed Interest Rate Swaps [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Maturity Date, 2016 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$3,000
Fair Value	-166
Maturity Date	31-Dec-16
Maturity Date, 2017 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	1,000
Fair Value	($33)
Maturity Date	31-Dec-17

Financial_Instruments_Addition

Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Offsetting [Abstract]
Estimated amount reclassified from other comprehensive income to interest expense	$117
Estimated termination value if there is breach of provision related to derivative agreement	$206

Financial_Instruments_Effect_o

Financial Instruments - Effect of Interest Rate Swaps on Results of Operations (Detail) (Interest Rate Swaps [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in OCI on Derivatives, Net of Tax	$23
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from Accumulated OCI into Operations	$132

Assets_and_Liabilities_Measure2

Assets and Liabilities Measured at Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	$558	$510
Assets, Fair Value	558	510
Less amounts classified as current assets	-64	-62
Investments of insurance subsidiaries, noncurrent	494	448
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value	199	295
Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	555	506
Assets, Fair Value	555	506
Debt Securities [Member] | States and Municipalities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	494	412
Assets, Fair Value	494	412
Debt Securities [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	61	94
Assets, Fair Value	61	94
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	3	4
Assets, Fair Value	3	4
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	64	97
Assets, Fair Value	64	97
Less amounts classified as current assets	-61	-62
Investments of insurance subsidiaries, noncurrent	3	35
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	61	94
Assets, Fair Value	61	94
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Debt Securities [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	61	94
Assets, Fair Value	61	94
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	3	3
Assets, Fair Value	3	3
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	488	405
Assets, Fair Value	488	405
Less amounts classified as current assets	-3
Investments of insurance subsidiaries, noncurrent	485	405
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value	199	295
Significant Other Observable Inputs (Level 2) [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	488	405
Assets, Fair Value	488	405
Significant Other Observable Inputs (Level 2) [Member] | Debt Securities [Member] | States and Municipalities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	488	405
Assets, Fair Value	488	405
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	6	8
Assets, Fair Value	6	8
Investments of insurance subsidiaries, noncurrent	6	8
Significant Unobservable Inputs (Level 3) [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	6	7
Assets, Fair Value	6	7
Significant Unobservable Inputs (Level 3) [Member] | Debt Securities [Member] | States and Municipalities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value	6	7
Assets, Fair Value	6	7
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value		1
Assets, Fair Value		$1

Assets_and_Liabilities_Measure3

Assets and Liabilities Measured at Fair Value - Schedule Related to Investments of Insurance Subsidiaries at Fair Value (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Asset, Beginning Balance	$8
Settlements	-2
Asset, Ending Balance	$6

Assets_and_Liabilities_Measure4

Assets and Liabilities Measured at Fair Value - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]
Estimated fair value of long-term debt	$30,861	$29,603
Carrying amounts of long-term debt	$29,645	$28,376

LongTerm_Debt_Schedule_of_Long

Long-Term Debt - Schedule of Long-Term Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]
Senior secured debt	$20,070	$18,181
Total debt (average life of 6.1 years, rates averaging 5.6%)	29,645	28,376
Total debt (average life of 6.1 years, rates averaging 5.6%)	29,645	28,376
Less amounts due within one year	338	786
Long-term debt	29,307	27,590
Senior Secured Asset-Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term line of credit	2,880	2,440
Senior Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Term loans	5,517	5,598
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured debt	11,100	9,695
Other Senior Secured Debt [Member]
Debt Instrument [Line Items]
Other senior secured debt (effective interest rate of [6.3]%)	573	448
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Senior unsecured notes	$9,575	$10,195

LongTerm_Debt_Schedule_of_Long1

Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt average term	6 years 1 month 6 days
Total debt average rate	5.60%
Senior Secured Asset-Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Effective interest rate	1.70%
Senior Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Effective interest rate	5.20%
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	5.50%
Other Senior Secured Debt [Member]
Debt Instrument [Line Items]
Effective interest rate	6.30%
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	7.20%

LongTerm_Debt_Additional_Infor

Long-Term Debt - Additional Information (Detail) (USD $)	0 Months Ended		3 Months Ended				12 Months Ended
	Nov. 30, 2014	Apr. 30, 2014	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 31, 2014	Jan. 31, 2015	Nov. 30, 2013	Dec. 06, 2012	Nov. 23, 2010
Debt Instrument [Line Items]
Pretax loss on retirement of debt	$109,000,000	$226,000,000	($68,000,000)	$143,000,000	($49,000,000)	$17,000,000	$335,000,000	$17,000,000
Debt instrument, repayment amount							5,164,000,000	1,662,000,000	2,441,000,000
Capital leases and other secured debt			573,000,000				573,000,000
Maturity of long-term debt in 2016			2,306,000,000				2,306,000,000
Maturity of long-term debt in 2017			2,053,000,000				2,053,000,000
Maturity of long-term debt in 2018			2,830,000,000				2,830,000,000
Maturity of long-term debt in 2019			2,137,000,000				2,137,000,000
Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2016
Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2019
Interest Rate Swaps [Member]
Debt Instrument [Line Items]
Notional amount, total			4,000,000,000				4,000,000,000
Federal Fund Rate [Member]
Debt Instrument [Line Items]
Debt instrument basis spread							0.50%
Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			1,500,000,000		1,500,000,000		1,500,000,000			600,000,000
Debt instrument, stated interest		8.50%	3.75%		3.75%		3.75%			4.25%
Redemption of aggregate principal amount		1,500,000,000
Senior Secured Notes Due 2019 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			600,000,000				600,000,000
Debt instrument, stated interest			4.25%				4.25%
Senior Secured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount										1,400,000,000
Debt instrument, stated interest										5.25%
Senior Secured Notes Due 2025 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount											1,000,000,000
Debt instrument, stated interest											5.38%
Senior Secured Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest	7.25%	7.88%
Redemption of aggregate principal amount	1,400,000,000	1,250,000,000
Senior Unsecured Notes Due 2015 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount											750,000,000
Debt instrument, stated interest											6.38%
Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			2,000,000,000		2,000,000,000		2,000,000,000
Debt instrument, stated interest			5.00%		5.00%		5.00%
Senior Unsecured Notes Due 2014 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest					5.75%
Debt instrument, repayment amount					500,000,000
Senior Secured Second Lien Notes Due 2017 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest						9.88%
Redemption of aggregate principal amount						201,000,000
Senior Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Loan facility amount matured												329,000,000
Senior Secured Notes Due Two 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			3,000,000,000				3,000,000,000
Debt instrument, stated interest			6.50%				6.50%
Senior Secured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			1,350,000,000				1,350,000,000
Debt instrument, stated interest			5.88%				5.88%
Senior Secured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			1,250,000,000				1,250,000,000
Debt instrument, stated interest			4.75%				4.75%
Senior Secured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			1,400,000,000				1,400,000,000
Debt instrument, stated interest			5.25%				5.25%
Asset-Based Revolving Credit Facility Maturing on March 7, 2019 [Member]
Debt Instrument [Line Items]
Long-term line of credit			3,250,000,000				3,250,000,000
Debt instrument maturity date							7-Mar-19
Percentage of senior secured credit facility over eligible accounts receivable			85.00%				85.00%
Line of credit outstanding			2,880,000,000				2,880,000,000
Senior Secured Revolving Credit Facility Maturing On February 26, 2019 [Member]
Debt Instrument [Line Items]
Long-term line of credit			2,000,000,000				2,000,000,000
Debt instrument maturity date							26-Feb-19
Line of credit outstanding			0				0
Senior Secured Term Loan A-2 Facility Maturing on May 2, 2016 [Member]
Debt Instrument [Line Items]
Long-term line of credit			482,000,000				482,000,000
Debt instrument maturity date							2-May-16
Senior Secured Term Loan A-3 Facility Maturing on February 2, 2016 [Member]
Debt Instrument [Line Items]
Long-term line of credit			717,000,000				717,000,000
Debt instrument maturity date							2-Feb-16
Senior Secured Term Loan B-3 Facility Maturing on May 1, 2018 [Member]
Debt Instrument [Line Items]
Long-term line of credit			2,343,000,000				2,343,000,000
Debt instrument maturity date							1-May-18
Senior Secured Term Loan B-2 Facility Maturing on March 31, 2017 [Member]
Debt Instrument [Line Items]
Long-term line of credit			1,975,000,000				1,975,000,000
Debt instrument maturity date							31-Mar-17
Maturities Ranging 2016 To 2033 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			6,041,000,000				6,041,000,000
Maturities Ranging 2016 To 2033 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2016
Maturities Ranging 2016 To 2033 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2033
Maturities Ranging 2015 To 2095 [Member]
Debt Instrument [Line Items]
Debentures, principal amount			886,000,000				886,000,000
Maturities Ranging 2015 To 2095 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2015
Maturities Ranging 2015 To 2095 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2095
Maturity Year 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			125,000,000				125,000,000
Senior Unsecured Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			1,000,000,000				1,000,000,000						1,000,000,000	1,525,000,000
Debt instrument, stated interest													6.25%	7.75%
Senior unsecured notes			1,525,000,000				1,525,000,000
Senior Unsecured Notes Unamortized Debt Discounts [Member]
Debt Instrument [Line Items]
Debt instrument, unamortized discount			$2,000,000				$2,000,000

Contingencies_and_Legal_Claim_1

Contingencies and Legal Claim Costs - Additional Information (Detail) (USD $)	0 Months Ended		3 Months Ended			12 Months Ended		0 Months Ended
In Millions, unless otherwise specified	Apr. 25, 2014	Oct. 28, 2011	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2012	Jan. 24, 2013	Feb. 09, 2015	Oct. 31, 2009	Jul. 31, 2012
		Cases				Hospital					Hospital
Schedule Of Activities Related To Claims Filed [Line Items]
Number of owned and operated hospitals reviewed						95
Number of claims filed		3
Capital commitments in connection with purchase of hospitals										$450
Additional shortfall related to capital expenditures	78
Legal claim costs			78	-11	175	78	175
Period of agreed capital commitments						5 years
Number of year under court-supervisor accounting for expenditures following the purchase						10 years
Health Care Foundation of Greater Kansas City [Member] | Pending Litigation [Member]
Schedule Of Activities Related To Claims Filed [Line Items]
Judgment award by the court								162
Plaintiff attorneys fees award						12
Percentage of legal claim costs			9.00%		9.00%
Florida [Member]
Schedule Of Activities Related To Claims Filed [Line Items]
Number of owned and operated hospitals reviewed											8
Florida [Member] | Qui Tam Action [Member]
Schedule Of Activities Related To Claims Filed [Line Items]
Number of owned and operated hospitals reviewed											2
Subsequent Event [Member]
Schedule Of Activities Related To Claims Filed [Line Items]
Dispute settlement expense									$15

Leases_Schedule_of_Commitments

Leases - Schedule of Commitments Relating to Noncancellable Operating Leases (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Leases [Abstract]
2015	$273
2016	257
2017	210
2018	165
2019	131
Thereafter	915
Operating leases future minimum payments due, gross	1,951
Less sublease income	-20
Commitments relating to noncancellable operating leases	$1,931

Capital_Stock_Additional_Infor

Capital Stock - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended	12 Months Ended			1 Months Ended
	31-May-14	Nov. 30, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Oct. 31, 2014
Capital Stock [Line Items]
Common stock, shares authorized			1,800,000,000	1,800,000,000	1,800,000,000		1,800,000,000
Repurchase of common stock,shares			14,028,591	14,028,591			14,028,591
Repurchase price of common stock, per share			$71.29
Underwritten secondary offering	14,554,628	10,656,436	14,028,591
Value of distribution per share						$6.50
Value of distribution				$0	$0	$3,142,000,000
Reduction of non vested stock options on exercise price of share-based awards						$6.50
Minimum [Member]
Capital Stock [Line Items]
Number of directors as per the amended and restated by-laws				3
Underwritten Secondary Offering [Member]
Capital Stock [Line Items]
Repurchase price of common stock, per share	51.53	46.92
Additional shares repurchased	14,554,628	10,656,436
Underwritten secondary offering		30,000,000
Additional shares amount repurchased	750,000,000	500,000,000
Bain Capital Partners, LLC [Member]
Capital Stock [Line Items]
Repurchase of common stock,shares			7,612,921	7,612,921			7,612,921
Repurchase price of common stock, per share							$73.26
Percentage of discount on share repurchase							1.00%
Share repurchase Program authorized amount								$1,000,000,000
Additional shares repurchased			6,415,670
Purchase price of common stock, per share			$68.96
Bain Capital Partners, LLC [Member] | Underwritten Secondary Offering [Member]
Capital Stock [Line Items]
Underwritten secondary offering	15,000,000

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Contribution Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of defined benefit plans	$404	$374	$371
Restoration Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of hours of service required to qualify for the plan	1,000 or more hours
Noncontributory and nonqualified plan, benefit expense	20	29	20
Noncontributory and nonqualified plan, accrued benefits liabilities	145	137
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan cost	31	43	51
Defined benefit plan obligation	231	214
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan cost	13	37	49
Defined benefit plan obligation	$172	$81
Subsequent to March 31, 2008 [Member] | Defined Contribution Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employer contribution to match participant contribution in defined contribution plan, net	100.00%
Subsequent to March 31, 2008 [Member] | Defined Contribution Benefit Plans [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employer contribution to match participant contribution in defined contribution plan	3.00%
Subsequent to March 31, 2008 [Member] | Defined Contribution Benefit Plans [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employer contribution to match participant contribution in defined contribution plan	9.00%

Segment_and_Geographic_Informa2

Segment and Geographic Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
	Hospital
Segment Reporting Information [Line Items]
Number of geographically organized groups	2
Number of owned and operated hospitals	166
Reorganization Group [Member] | National Group [Member]
Segment Reporting Information [Line Items]
Number of owned and operated hospitals	82
Reorganization Group [Member] | American Group [Member]
Segment Reporting Information [Line Items]
Number of owned and operated hospitals	77
Reorganization Group [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Number of owned and operated hospitals	7

Segment_and_Geographic_Informa3

Segment and Geographic Information - Schedule of Geographic Distributions of Revenues, Equity in Earnings of Affiliates, Adjusted Segment EBITDA, Depreciation and Amortization and Assets (Detail) (USD $)	0 Months Ended		3 Months Ended									12 Months Ended
In Millions, unless otherwise specified	Nov. 30, 2014	Apr. 30, 2014	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues			$9,636	$9,220	$9,230	$8,832	$8,836	$8,456	$8,450	$8,440		$36,918	$34,182	$33,013
Equity in earnings of affiliates												-43	-29	-36
Adjusted segment EBITDA												7,428	6,574	6,531
Depreciation and amortization												1,820	1,753	1,679
Depreciation and amortization												1,820	1,753	1,679
Interest expense												1,743	1,848	1,798
Losses (gains) on sales of facilities			-7	-9	-7	-13	-2	1	-3	11		-29	10	-15
Losses on retirement of debt	109	226	-68		143	-49				17		335	17
Legal claim costs						78				-11	175	78		175
Income before income taxes												3,481	2,946	2,894
Assets			31,199				28,831				28,075	31,199	28,831	28,075
Goodwill and other intangible assets, Beginning Balance						5,903				5,539		5,903	5,539	5,251
Goodwill and other intangible assets, Acquisitions												548	378	288
Goodwill and other intangible assets, Foreign currency translation and other												-35	-14
Goodwill and other intangible assets, Ending Balance			6,416				5,903				5,539	6,416	5,903	5,539
National Group [Member]
Segment Reporting Information [Line Items]
Revenues												17,325	15,968	15,505
Equity in earnings of affiliates												-15	-9	-9
Adjusted segment EBITDA												3,847	3,301	3,325
Depreciation and amortization												749	718	694
Depreciation and amortization												749	718	694
Assets			10,588				10,206				9,451	10,588	10,206	9,451
Goodwill and other intangible assets, Beginning Balance						1,104				1,035		1,104	1,035	991
Goodwill and other intangible assets, Acquisitions												72	68	48
Goodwill and other intangible assets, Foreign currency translation and other												-6	1	-4
Goodwill and other intangible assets, Ending Balance			1,170				1,104				1,035	1,170	1,104	1,035
American Group [Member]
Segment Reporting Information [Line Items]
Revenues												17,532	16,487	16,115
Equity in earnings of affiliates												-31	-24	-28
Adjusted segment EBITDA												4,025	3,662	3,575
Depreciation and amortization												840	835	816
Depreciation and amortization												840	835	816
Assets			15,091				13,911				13,744	15,091	13,911	13,744
Goodwill and other intangible assets, Beginning Balance						4,190				4,189		4,190	4,189	3,988
Goodwill and other intangible assets, Acquisitions												428	13	200
Goodwill and other intangible assets, Foreign currency translation and other												-4	-12	1
Goodwill and other intangible assets, Ending Balance			4,614				4,190				4,189	4,614	4,190	4,189
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues												2,061	1,727	1,393
Equity in earnings of affiliates												3	4	1
Adjusted segment EBITDA												-444	-389	-369
Depreciation and amortization												231	200	169
Depreciation and amortization												231	200	169
Assets			5,520				4,714				4,880	5,520	4,714	4,880
Goodwill and other intangible assets, Beginning Balance						609				315		609	315	272
Goodwill and other intangible assets, Acquisitions												48	297	40
Goodwill and other intangible assets, Foreign currency translation and other												-25	-3	3
Goodwill and other intangible assets, Ending Balance			$632				$609				$315	$632	$609	$315

Other_Comprehensive_Loss_Compo

Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Unrealized gains on available-for-sale securities, beginning balances	$7	$11	$7
Unrealized gains (losses) on available-for-sale securities, net of income taxes	6	-4	4
Unrealized gains on available-for-sale securities, ending balances	13	7	11
Foreign currency translation adjustments, beginning balances	11	-1	-25
Foreign currency translation adjustments	-47	12	24
Foreign currency translation adjustments, ending balances	-36	11	-1
Defined benefit plans, beginning balances	-88	-196	-169
Defined benefit plans	-99	84	-56
Defined benefit plans, (income) expense reclassified into operations from other comprehensive income	13	24	29
Defined benefit plans, ending balances	-174	-88	-196
Change in fair value of derivative instruments, beginning balances	-187	-271	-253
Change in fair value of derivative instruments	-23	2	-96
Change in fair value of derivatives instruments, (income) expense reclassified into operations from other comprehensive income	84	82	78
Change in fair value of derivative instruments, ending balances	-126	-187	-271
Accumulated other comprehensive income (loss), net of tax, beginning balances	-257	-457	-440
Unrealized gains (losses) on available-for-sale securities, net of income taxes	6	-4	4
Foreign currency translation adjustments	-47	12	24
Defined benefit plans	-99	84	-56
Change in fair value of derivative instruments, net of income tax benefit	-23	2	-96
Expense reclassified into operations from other comprehensive income, Total	97	106	107
Accumulated other comprehensive income (loss), net of tax, ending balances	($323)	($257)	($457)

Other_Comprehensive_Loss_Compo1

Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Unrealized gains (losses) on available-for-sale securities, tax portion	$3	($3)	$2
Foreign currency translation adjustments, income (taxes)	27	6	13
Defined benefit plans, income tax benefit	59	-50	33
Change in fair value of derivative instruments, income tax benefit	13	1	55
Defined benefit plans, Expense reclassified into operations from other comprehensive income, Income tax benefits	8	14	17
Change in fair value of derivative instruments, Expense reclassified into operations from other comprehensive income, Income tax benefits	$48	$49	$44

Accrued_Expenses_and_Allowance2

Accrued Expenses and Allowance for Doubtful Accounts - Summary of Other Accrued Expenses (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Payables and Accruals [Abstract]
Professional liability risks	$329	$330
Interest	357	392
Taxes other than income	255	252
Other	796	939
Other accrued expenses	$1,737	$1,913

Accrued_Expenses_and_Allowance3

Accrued Expenses and Allowance for Doubtful Accounts - Summary of Allowance of Doubtful Accounts (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Payables and Accruals [Abstract]
Balance at Beginning of Year	$5,488	$4,846	$4,106
Provision for doubtful accounts	3,169	3,858	3,770
Accounts Written off, Net of Recoveries	-3,646	-3,216	-3,030
Balance at End of Year	$5,011	$5,488	$4,846

Supplemental_Condensed_Consoli2

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Additional Information (Detail) (USD $)	Nov. 22, 2010	Dec. 31, 2014	Dec. 06, 2012	Nov. 23, 2010
In Millions, unless otherwise specified
Supplemental Condensed Consolidating Financial Information [Line Items]
Ownership percentage held by parent	100.00%
Senior Unsecured Notes Due 2021 [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Debt instrument, principal amount		$1,000	$1,000	$1,525
Debt instrument, stated interest			6.25%	7.75%

Supplemental_Condensed_Consoli3

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Condensed Consolidating Comprehensive Income Statement (Detail) (USD $)	0 Months Ended		3 Months Ended									12 Months Ended
In Millions, unless otherwise specified	Nov. 30, 2014	Apr. 30, 2014	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Supplemental Condensed Consolidating Financial Information [Line Items]
Revenues before provision for doubtful accounts												$40,087	$38,040	$36,783
Provision for doubtful accounts												3,169	3,858	3,770
Revenues			9,636	9,220	9,230	8,832	8,836	8,456	8,450	8,440		36,918	34,182	33,013
Salaries and benefits												16,641	15,646	15,089
Supplies												6,262	5,970	5,717
Other operating expenses												6,755	6,237	6,048
Electronic health record incentive income												-125	-216	-336
Equity in earnings of affiliates												-43	-29	-36
Depreciation and amortization												1,820	1,753	1,679
Interest expense												1,743	1,848	1,798
Gains on sales of facilities			-7	-9	-7	-13	-2	1	-3	11		-29	10	-15
Losses on retirement of debt	109	226	-68		143	-49				17		335	17
Legal claim costs						78				-11	175	78		175
Total expenses including equity in earnings of affiliates												33,437	31,236	30,119
Income (loss) before income taxes												3,481	2,946	2,894
Provision (benefit) for income taxes												1,108	950	888
Net income (loss)			676	611	632	454	554	467	537	438		2,373	1,996	2,006
Net income attributable to noncontrolling interests												498	440	401
Net income (loss) attributable to HCA Holdings, Inc.			527	518	483	347	424	365	423	344		1,875	1,556	1,605
Comprehensive income (loss) attributable to HCA Holdings, Inc.												1,809	1,756	1,588
HCA Holdings, Inc. Issuer [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Other operating expenses												20	8	3
Equity in earnings of affiliates												-1,937	-1,875	-1,668
Interest expense												184	184	123
Total expenses including equity in earnings of affiliates												-1,733	-1,683	-1,542
Income (loss) before income taxes												1,733	1,683	1,542
Provision (benefit) for income taxes												-76	-73	-46
Net income (loss)												1,809	1,756	1,588
Net income (loss) attributable to HCA Holdings, Inc.												1,809	1,756	1,588
Comprehensive income (loss) attributable to HCA Holdings, Inc.												1,809	1,756	1,588
HCA Inc. Issuer [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Other operating expenses													-2	5
Interest expense												2,175	2,253	2,167
Losses on retirement of debt												335	17
Legal claim costs												78		175
Total expenses including equity in earnings of affiliates												2,588	2,268	2,347
Income (loss) before income taxes												-2,588	-2,268	-2,347
Provision (benefit) for income taxes												-961	-860	-839
Net income (loss)												-1,627	-1,408	-1,508
Net income (loss) attributable to HCA Holdings, Inc.												-1,627	-1,408	-1,508
Comprehensive income (loss) attributable to HCA Holdings, Inc.												-1,566	-1,324	-1,526
Subsidiary Guarantors [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Revenues before provision for doubtful accounts												20,533	20,042	19,415
Provision for doubtful accounts												1,777	2,262	2,144
Revenues												18,756	17,780	17,271
Salaries and benefits												8,574	8,387	7,959
Supplies												3,280	3,158	2,995
Other operating expenses												3,138	2,998	3,013
Electronic health record incentive income												-85	-142	-219
Equity in earnings of affiliates												-7	-2	-5
Depreciation and amortization												888	855	821
Interest expense												-559	-523	-468
Gains on sales of facilities												-25	20	3
Management fees												-662	-632	-569
Total expenses including equity in earnings of affiliates												14,542	14,119	13,530
Income (loss) before income taxes												4,214	3,661	3,741
Provision (benefit) for income taxes												1,533	1,362	1,313
Net income (loss)												2,681	2,299	2,428
Net income attributable to noncontrolling interests												87	69	62
Net income (loss) attributable to HCA Holdings, Inc.												2,594	2,230	2,366
Comprehensive income (loss) attributable to HCA Holdings, Inc.												2,508	2,338	2,339
Subsidiary Non-Guarantors [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Revenues before provision for doubtful accounts												19,554	17,998	17,368
Provision for doubtful accounts												1,392	1,596	1,626
Revenues												18,162	16,402	15,742
Salaries and benefits												8,067	7,259	7,130
Supplies												2,982	2,812	2,722
Other operating expenses												3,597	3,233	3,027
Electronic health record incentive income												-40	-74	-117
Equity in earnings of affiliates												-36	-27	-31
Depreciation and amortization												932	898	858
Interest expense												-57	-66	-24
Gains on sales of facilities												-4	-10	-18
Management fees												662	632	569
Total expenses including equity in earnings of affiliates												16,103	14,657	14,116
Income (loss) before income taxes												2,059	1,745	1,626
Provision (benefit) for income taxes												612	521	460
Net income (loss)												1,447	1,224	1,166
Net income attributable to noncontrolling interests												411	371	339
Net income (loss) attributable to HCA Holdings, Inc.												1,036	853	827
Comprehensive income (loss) attributable to HCA Holdings, Inc.												995	861	855
Eliminations [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Equity in earnings of affiliates												1,937	1,875	1,668
Total expenses including equity in earnings of affiliates												1,937	1,875	1,668
Income (loss) before income taxes												-1,937	-1,875	-1,668
Net income (loss)												-1,937	-1,875	-1,668
Net income (loss) attributable to HCA Holdings, Inc.												-1,937	-1,875	-1,668
Comprehensive income (loss) attributable to HCA Holdings, Inc.												($1,937)	($1,875)	($1,668)

Supplemental_Condensed_Consoli4

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Condensed Consolidating Balance Sheet (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$566	$414	$705	$373
Accounts receivable, net	5,694	5,208
Inventories	1,279	1,179
Deferred income taxes	366	489
Other	1,025	747
Total current assets	8,930	8,037
Property and equipment, net	14,355	13,619
Investments of insurance subsidiaries	494	448
Investments in and advances to affiliates	165	121
Goodwill and other intangible assets	6,416	5,903	5,539	5,251
Deferred loan costs	219	237
Other	620	466
Total assets	31,199	28,831	28,075
Current liabilities:
Accounts payable	2,035	1,803
Accrued salaries	1,370	1,193
Other accrued expenses	1,737	1,913
Long-term debt due within one year	338	786
Total current liabilities	5,480	5,695
Long-term debt	29,307	27,590
Professional liability risks	1,078	949
Income taxes and other liabilities	1,832	1,525
Total liabilities	37,697	35,759
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	-7,894	-8,270
Noncontrolling interests	1,396	1,342
Total stockholders' deficit	-6,498	-6,928	-8,341	-7,014
Total liabilities and stockholders' deficit	31,199	28,831
HCA Holdings, Inc. Issuer [Member]
Current assets:
Cash and cash equivalents			22
Deferred income taxes	366	489
Other	118
Total current assets	484	489
Investments in and advances to affiliates	22,293	20,356
Deferred loan costs	26	30
Other	435	250
Total assets	23,238	21,125
Current liabilities:
Accounts payable	1	1
Other accrued expenses	45	272
Total current liabilities	46	273
Long-term debt	2,525	2,525
Intercompany balances	28,008	26,107
Income taxes and other liabilities	553	490
Total liabilities	31,132	29,395
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	-7,894	-8,270
Total stockholders' deficit	-7,894	-8,270
Total liabilities and stockholders' deficit	23,238	21,125
HCA Inc. Issuer [Member]
Current assets:
Deferred loan costs	193	207
Total assets	193	207
Current liabilities:
Other accrued expenses	317	353
Long-term debt due within one year	231	702
Total current liabilities	548	1,055
Long-term debt	26,317	24,701
Intercompany balances	-10,261	-10,513
Income taxes and other liabilities	487	296
Total liabilities	17,091	15,539
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	-16,898	-15,332
Total stockholders' deficit	-16,898	-15,332
Total liabilities and stockholders' deficit	193	207
Subsidiary Guarantors [Member]
Current assets:
Cash and cash equivalents	87	112	383	115
Accounts receivable, net	2,812	2,565
Inventories	756	692
Other	376	301
Total current assets	4,031	3,670
Property and equipment, net	7,871	7,504
Investments in and advances to affiliates	16	13
Goodwill and other intangible assets	1,705	1,695
Other	27	48
Total assets	13,650	12,930
Current liabilities:
Accounts payable	1,272	1,169
Accrued salaries	783	694
Other accrued expenses	517	464
Long-term debt due within one year	56	45
Total current liabilities	2,628	2,372
Long-term debt	185	181
Intercompany balances	-21,582	-19,428
Income taxes and other liabilities	605	521
Total liabilities	-18,164	-16,354
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	31,693	29,185
Noncontrolling interests	121	99
Total stockholders' deficit	31,814	29,284
Total liabilities and stockholders' deficit	13,650	12,930
Subsidiary Non-Guarantors [Member]
Current assets:
Cash and cash equivalents	479	302	300	258
Accounts receivable, net	2,882	2,643
Inventories	523	487
Other	531	446
Total current assets	4,415	3,878
Property and equipment, net	6,484	6,115
Investments of insurance subsidiaries	494	448
Investments in and advances to affiliates	149	108
Goodwill and other intangible assets	4,711	4,208
Other	158	168
Total assets	16,411	14,925
Current liabilities:
Accounts payable	762	633
Accrued salaries	587	499
Other accrued expenses	858	824
Long-term debt due within one year	51	39
Total current liabilities	2,258	1,995
Long-term debt	280	183
Intercompany balances	3,835	3,834
Professional liability risks	1,078	949
Income taxes and other liabilities	187	218
Total liabilities	7,638	7,179
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	7,498	6,503
Noncontrolling interests	1,275	1,243
Total stockholders' deficit	8,773	7,746
Total liabilities and stockholders' deficit	16,411	14,925
Eliminations [Member]
Current assets:
Investments in and advances to affiliates	-22,293	-20,356
Total assets	-22,293	-20,356
Current liabilities:
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	-22,293	-20,356
Total stockholders' deficit	-22,293	-20,356
Total liabilities and stockholders' deficit	($22,293)	($20,356)

Supplemental_Condensed_Consoli5

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Condensed Consolidating Statement of Cash Flows (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$2,373	$1,996	$2,006
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities	-3,433	-4,272	-3,663
Provision for doubtful accounts	3,169	3,858	3,770
Depreciation and amortization	1,820	1,753	1,679
Income taxes	-83	143	96
Gains on sales of facilities	-29	10	-15
Losses on retirement of debt	335	17
Legal claim costs	78		175
Amortization of deferred loan costs	42	55	62
Share-based compensation	163	113	56
Other	13	7	9
Net cash provided by operating activities	4,448	3,680	4,175
Cash flows from investing activities:
Purchase of property and equipment	-2,176	-1,943	-1,862
Acquisition of hospitals and health care entities	-766	-481	-258
Disposal of hospitals and health care entities	51	33	30
Change in investments	-37	36	16
Other	10	9	11
Net cash used in investing activities	-2,918	-2,346	-2,063
Cash flows from financing activities:
Issuance of long-term debt	5,502		4,850
Net change in revolving bank credit facilities	440	970	-685
Repayment of long-term debt	-5,164	-1,662	-2,441
Distributions to noncontrolling interests	-442	-435	-401
Payment of debt issuance costs	-73	-5	-62
Repurchase of common stock	-1,750	-500
Distributions to stockholders	-7	-16	-3,148
Income tax benefits	134	113	174
Other	-18	-90	-67
Net cash used in financing activities	-1,378	-1,625	-1,780
Change in cash and cash equivalents	152	-291	332
Cash and cash equivalents at beginning of period	414	705	373
Cash and cash equivalents at end of period	566	414	705
Eliminations [Member]
Cash flows from operating activities:
Net income (loss)	-1,937	-1,875	-1,668
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Equity in earnings of affiliates	1,937	1,875	1,668
HCA Holdings, Inc. Issuer [Member]
Cash flows from operating activities:
Net income (loss)	1,809	1,756	1,588
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities	-11	-11	57
Income taxes	-83	143	96
Amortization of deferred loan costs	3	3	2
Share-based compensation	163	113	56
Equity in earnings of affiliates	-1,937	-1,875	-1,668
Net cash provided by operating activities	-56	129	131
Cash flows from financing activities:
Issuance of long-term debt			1,000
Payment of debt issuance costs			-12
Repurchase of common stock	-1,750	-500
Distributions to stockholders	-7	-16	-3,148
Income tax benefits	134	113	174
Changes in intercompany balances with affiliates, net	1,678	342	1,938
Other	1	-90	-61
Net cash used in financing activities	56	-151	-109
Change in cash and cash equivalents		-22	22
Cash and cash equivalents at beginning of period		22
Cash and cash equivalents at end of period			22
HCA Inc. Issuer [Member]
Cash flows from operating activities:
Net income (loss)	-1,627	-1,408	-1,508
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities	-12	17	-28
Losses on retirement of debt	335	17
Legal claim costs	78		175
Amortization of deferred loan costs	39	52	60
Other	18	9	14
Net cash provided by operating activities	-1,169	-1,313	-1,287
Cash flows from financing activities:
Issuance of long-term debt	5,500		3,850
Net change in revolving bank credit facilities	440	970	-685
Repayment of long-term debt	-5,086	-1,254	-2,309
Payment of debt issuance costs	-73	-5	-50
Changes in intercompany balances with affiliates, net	388	1,602	481
Net cash used in financing activities	1,169	1,313	1,287
Subsidiary Guarantors [Member]
Cash flows from operating activities:
Net income (loss)	2,681	2,299	2,428
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities	-1,972	-2,320	-1,927
Provision for doubtful accounts	1,777	2,262	2,144
Depreciation and amortization	888	855	821
Gains on sales of facilities	-25	20	3
Other		2	-1
Net cash provided by operating activities	3,349	3,118	3,468
Cash flows from investing activities:
Purchase of property and equipment	-1,189	-921	-1,039
Acquisition of hospitals and health care entities	-34		-110
Disposal of hospitals and health care entities	41	17	2
Change in investments	32	-16	-11
Other			-2
Net cash used in investing activities	-1,150	-920	-1,160
Cash flows from financing activities:
Repayment of long-term debt	-50	-34	-20
Distributions to noncontrolling interests	-65	-71	-60
Changes in intercompany balances with affiliates, net	-2,109	-2,364	-1,960
Net cash used in financing activities	-2,224	-2,469	-2,040
Change in cash and cash equivalents	-25	-271	268
Cash and cash equivalents at beginning of period	112	383	115
Cash and cash equivalents at end of period	87	112	383
Subsidiary Non-Guarantors [Member]
Cash flows from operating activities:
Net income (loss)	1,447	1,224	1,166
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities	-1,438	-1,958	-1,765
Provision for doubtful accounts	1,392	1,596	1,626
Depreciation and amortization	932	898	858
Gains on sales of facilities	-4	-10	-18
Other	-5	-4	-4
Net cash provided by operating activities	2,324	1,746	1,863
Cash flows from investing activities:
Purchase of property and equipment	-987	-1,022	-823
Acquisition of hospitals and health care entities	-732	-481	-148
Disposal of hospitals and health care entities	10	16	28
Change in investments	-69	52	27
Other	10	9	13
Net cash used in investing activities	-1,768	-1,426	-903
Cash flows from financing activities:
Issuance of long-term debt	2
Repayment of long-term debt	-28	-374	-112
Distributions to noncontrolling interests	-377	-364	-341
Changes in intercompany balances with affiliates, net	43	420	-459
Other	-19		-6
Net cash used in financing activities	-379	-318	-918
Change in cash and cash equivalents	177	2	42
Cash and cash equivalents at beginning of period	302	300	258
Cash and cash equivalents at end of period	$479	$302	$300

Supplemental_Condensed_Consoli6

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Consolidated Statements of Stockholder's Deficit (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based benefit plans	$321	$139	$169
Other	6	-13	-58
Healthtrust, Inc. [Member]
Share-based benefit plans	321	139	169
Other	-6	-6	-17
Distributions from HCA Holdings, Inc., net of contributions to HCA Holdings, Inc.	$315	$133	$152

Supplemental_Condensed_Consoli7

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Quarterly Consolidated Financial Information (Detail) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders Equity Excluding Portion Attributable To Subsidiaries Noncontrolling Interest [Abstract]
Revenues	$9,636	$9,220	$9,230	$8,832	$8,836	$8,456	$8,450	$8,440	$36,918	$34,182	$33,013
Net income	676	611	632	454	554	467	537	438	2,373	1,996	2,006
Net income attributable to HCA Holdings, Inc.	$527	$518	$483	$347	$424	$365	$423	$344	$1,875	$1,556	$1,605
Basic earnings per share	$1.22	$1.20	$1.10	$0.78	$0.96	$0.82	$0.95	$0.77	$4.30	$3.50	$3.65
Diluted earnings per share	$1.19	$1.16	$1.07	$0.76	$0.92	$0.79	$0.91	$0.74	$4.16	$3.37	$3.49

Supplemental_Condensed_Consoli8

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Quarterly Consolidated Financial Information (Parenthetical) (Detail) (USD $)	0 Months Ended		3 Months Ended									12 Months Ended
In Millions, unless otherwise specified	Nov. 30, 2014	Apr. 30, 2014	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders Equity Excluding Portion Attributable To Subsidiaries Noncontrolling Interest [Abstract]
Losses (gains) on sales of facilities			$7	$9	$7	$13	$2	($1)	$3	($11)		$29	($10)	$15
Losses on retirement of debt	-109	-226	68		-143	49				-17		-335	-17
Legal claim costs						$78				($11)	$175	$78		$175