HCA Healthcare (HCA) 10-K 26 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Jan. 31, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	HCA
Entity Registrant Name	HCA HOLDINGS, INC.
Entity Central Index Key	860,730
Current Fiscal Year End Date	--12-31
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		396,958,400
Entity Public Float			$ 29,839

Consolidated Income Statements

Consolidated Income Statements - USD ($) shares in Thousands, $ in Millions	Dec. 09, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2012	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenues before the provision for doubtful accounts											$ 43,591	$ 40,087	$ 38,040
Provision for doubtful accounts											3,913	3,169	3,858
Revenues		$ 10,249	$ 9,856	$ 9,897	$ 9,676	$ 9,636	$ 9,220	$ 9,230	$ 8,832		39,678	36,918	34,182
Salaries and benefits											18,115	16,641	15,646
Supplies											6,638	6,262	5,970
Other operating expenses											7,103	6,755	6,237
Electronic health record incentive income											(47)	(125)	(216)
Equity in earnings of affiliates											(46)	(43)	(29)
Depreciation and amortization											1,904	1,820	1,753
Interest expense											1,665	1,743	1,848
Losses (gains) on sales of facilities		4	2	3	(6)	7	9	(7)	(13)		5	(29)	10
Losses on retirement of debt		7		79		68		143			135	335	17
Legal claim costs	$ 434	120							78	$ 175	249	78
Total expenses including equity in earnings of affiliates											35,721	33,437	31,236
Income before income taxes											3,957	3,481	2,946
Provision for income taxes											1,261	1,108	950
Net income		738	573	665	720	676	611	632	454		2,696	2,373	1,996
Net income attributable to noncontrolling interests											567	498	440
Net income attributable to HCA Holdings, Inc.		$ 582	$ 449	$ 507	$ 591	$ 527	$ 518	$ 483	$ 347		$ 2,129	$ 1,875	$ 1,556
Per share data:
Basic earnings per share		$ 1.44	$ 1.08	$ 1.22	$ 1.41	$ 1.22	$ 1.20	$ 1.10	$ 0.78		$ 5.14	$ 4.30	$ 3.50
Diluted earnings per share		$ 1.40	$ 1.05	$ 1.18	$ 1.36	$ 1.19	$ 1.16	$ 1.07	$ 0.76		$ 4.99	$ 4.16	$ 3.37
Shares used in earnings per share calculations (in millions):
Basic											414,193	435,668	445,066
Diluted											426,721	450,352	461,913

Consolidated Comprehensive Inco

Consolidated Comprehensive Income Statements - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 2,696	$ 2,373	$ 1,996
Other comprehensive income (loss) before taxes:
Foreign currency translation	(63)	(74)	18
Unrealized gains (losses) on available-for-sale securities	1	9	(7)
Defined benefit plans	30	(158)	134
Pension costs included in salaries and benefits	32	21	38
Total defined benefit plans	62	(137)	172
Change in fair value of derivative financial instruments	(36)	(36)	3
Interest costs included in interest expense	125	132	131
Total change in fair value of derivative financial instruments	89	96	134
Other comprehensive income (loss) before taxes	89	(106)	317
Income taxes (benefits) related to other comprehensive income items	31	(40)	117
Other comprehensive income (loss)	58	(66)	200
Comprehensive income	2,754	2,307	2,196
Comprehensive income attributable to noncontrolling interests	567	498	440
Comprehensive income attributable to HCA Holdings, Inc.	$ 2,187	$ 1,809	$ 1,756

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 741	$ 566
Accounts receivable, less allowance for doubtful accounts of $5,326 and $5,011	5,889	5,694
Inventories	1,439	1,279
Deferred income taxes		366
Other	1,163	1,025
Total current assets	9,232	8,930
Property and equipment, at cost:
Land	1,524	1,524
Buildings	12,533	11,941
Equipment	19,335	18,496
Construction in progress	1,222	1,019
Property and equipment, at cost	34,614	32,980
Accumulated depreciation	(19,600)	(18,625)
Property and equipment, net	15,014	14,355
Investments of insurance subsidiaries	432	494
Investments in and advances to affiliates	178	165
Goodwill and other intangible assets	6,731	6,416
Other	1,157	620
Total assets	32,744	30,980
Current liabilities:
Accounts payable	2,170	2,035
Accrued salaries	1,233	1,370
Other accrued expenses	1,880	1,737
Long-term debt due within one year	233	338
Total current liabilities	5,516	5,480
Long-term debt, less net debt issuance costs of $167 and $219	30,255	29,088
Professional liability risks	1,115	1,078
Income taxes and other liabilities	1,904	1,832
Stockholders' deficit:
Common stock $0.01 par; authorized 1,800,000,000 shares; outstanding 398,738,700 shares - 2015 and 420,477,900 shares - 2014	4	4
Accumulated other comprehensive loss	(265)	(323)
Retained deficit	(7,338)	(7,575)
Stockholders' deficit attributable to HCA Holdings, Inc.	(7,599)	(7,894)
Noncontrolling interests	1,553	1,396
Total stockholders' deficit	(6,046)	(6,498)
Total liabilities and stockholders' deficit	$ 32,744	$ 30,980

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for Accounts receivable	$ 5,326	$ 5,011
Debt issuance cost	$ 167	$ 219
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,800,000,000	1,800,000,000
Common stock, shares outstanding	398,738,700	420,477,900

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Deficit - USD ($) $ in Millions	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]
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	10,656,400	10,656,400
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	28,583,200	28,583,200
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
Comprehensive income	2,754			58	2,129	567
Repurchase of common stock	$ (2,397)		(505)		(1,892)
Repurchase of common stock, shares	31,991,200	31,991,200
Share-based benefit plans	$ 523		523
Share-based benefit plans, shares		10,252,000
Distributions	(495)					(495)
Acquisition of entities with noncontrolling interests	85					85
Other	(18)		$ (18)
Balance at Dec. 31, 2015	$ (6,046)	$ 4		$ (265)	$ (7,338)	$ 1,553
Balance, shares at Dec. 31, 2015		398,739,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 2,696	$ 2,373	$ 1,996
Increase (decrease) in cash from operating assets and liabilities:
Accounts receivable	(4,114)	(3,645)	(4,395)
Provision for doubtful accounts	3,913	3,169	3,858
Accounts receivable, net	(201)	(476)	(537)
Inventories and other assets	(314)	(232)	(19)
Accounts payable and accrued expenses	192	444	142
Depreciation and amortization	1,904	1,820	1,753
Income taxes	(160)	(83)	143
Losses (gains) on sales of facilities	5	(29)	10
Losses on retirement of debt	135	335	17
Legal claim costs	149	78
Amortization of debt issuance costs	35	42	55
Share-based compensation	239	163	113
Other	54	13	7
Net cash provided by operating activities	4,734	4,448	3,680
Cash flows from investing activities:
Purchase of property and equipment	(2,375)	(2,176)	(1,943)
Acquisition of hospitals and health care entities	(351)	(766)	(481)
Disposal of hospitals and health care entities	73	51	33
Change in investments	63	(37)	36
Other	7	10	9
Net cash used in investing activities	(2,583)	(2,918)	(2,346)
Cash flows from financing activities:
Issuances of long-term debt	5,548	5,502
Net change in revolving bank credit facilities	150	440	970
Repayment of long-term debt	(4,920)	(5,164)	(1,662)
Distributions to noncontrolling interests	(495)	(442)	(435)
Payment of debt issuance costs	(50)	(73)	(5)
Repurchases of common stock	(2,397)	(1,750)	(500)
Income tax benefits	235	134	113
Other	(47)	(25)	(106)
Net cash used in financing activities	(1,976)	(1,378)	(1,625)
Change in cash and cash equivalents	175	152	(291)
Cash and cash equivalents at beginning of period	566	414	705
Cash and cash equivalents at end of period	741	566	414
Interest payments	1,650	1,758	1,832
Income tax payments, net	$ 1,186	$ 1,057	$ 694

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2015
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, 2015, these affiliates owned and operated 168 hospitals, 116 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 $327 million, $285 million and $287 million for the years ended December 31, 2015, 2014 and 2013, 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, 2015 Ratio 2014 Ratio 2013 Ratio Medicare $ 8,654 21.8 % $ 8,354 22.6 % $ 7,951 23.3 % Managed Medicare 4,133 10.4 3,614 9.8 3,279 9.6 Medicaid 1,705 4.3 1,848 5.0 1,480 4.3 Managed Medicaid 2,234 5.6 1,923 5.2 1,570 4.6 Managed care and other insurers 21,882 55.2 20,066 54.4 18,654 54.6 International (managed care and other insurers) 1,295 3.3 1,311 3.6 1,175 3.4 39,903 100.6 37,116 100.6 34,109 99.8 Uninsured 1,927 4.9 1,494 4.0 2,677 7.8 Other 1,761 4.4 1,477 4.0 1,254 3.7 Revenues before provision for doubtful accounts 43,591 109.9 40,087 108.6 38,040 111.3 Provision for doubtful accounts (3,913 ) (9.9 ) (3,169 ) (8.6 ) (3,858 ) (11.3 ) Revenues $ 39,678 100.0 % $ 36,918 100.0 % $ 34,182 100.0 % 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 $48 million, $50 million and $41 million in 2015, 2014 and 2013, respectively. The adjustments to estimated reimbursement amounts, which resulted in net increases to revenues, related primarily to cost reports filed during previous years were $85 million, $53 million and $68 million in 2015, 2014 and 2013, respectively. 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 may first attempt to provide assistance to uninsured patients to help determine whether they may qualify 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): 2015 Ratio 2014 Ratio 2013 Ratio Charity care $ 3,682 20 % $ 3,775 24 % $ 3,497 22 % Uninsured discounts 10,692 59 8,999 56 8,210 53 Provision for doubtful accounts 3,913 21 3,169 20 3,858 25 Total uncompensated care $ 18,287 100 % $ 15,943 100 % $ 15,565 100 % A summary of the estimated cost of total uncompensated care for the years ended December 31, follows (dollars in millions): 2015 2014 2013 Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization) $ 33,760 $ 31,478 $ 29,606 Cost-to-charges ratio (patient care costs as percentage of gross patient charges) 14.5 % 15.5 % 16.3 % Total uncompensated care $ 18,287 $ 15,943 $ 15,565 Multiply by the cost-to-charges ratio 14.5 % 15.5 % 16.3 % Estimated cost of total uncompensated care $ 2,652 $ 2,471 $ 2,537 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 31.5% for 2015, 30.2% for 2014 and 31.3% for 2013. Recent Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) 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 was originally scheduled to become effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption was originally not to be permitted under US GAAP. In July 2015, the FASB decided to defer the effective date of the new revenue standard by one year, but will permit entities to adopt one year earlier if they choose (i.e., the original effective date). The FASB decided, based on its outreach to various stakeholders and forthcoming exposure drafts, which amend the new revenue standard, that a deferral was necessary to provide adequate time to effectively implement the new standard. We are continuing to evaluate the effects the adoption of this standard will have on our financial statements and financial disclosures. In April 2015, the FASB issued Accounting Standards Update 2015-03, Simplifying the Presentation of Debt Issuance Costs In November 2015, the FASB issued Accounting Standards Update 2015-17, Balance Sheet Classification of Deferred Taxes 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 $517 million and $511 million at December 31, 2015 and 2014, 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, 2015 and 2014, the allowance for doubtful accounts represented approximately 94.5% and 91.4%, respectively, of the $5.636 billion and $5.482 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 53 days, 54 days and 54 days at December 31, 2015, 2014 and 2013, respectively. Changes in general economic conditions, patient accounting service center operations, 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 $1.880 billion in 2015, $1.798 billion in 2014 and $1.733 billion in 2013. 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, 2015 and 2014, 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 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 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 is estimated based upon internal evaluations of 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 2015, 2014 and 2013. 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 2015, goodwill increased by $323 million related to acquisitions and declined by $2 million related to foreign currency translation and other adjustments. During 2014, goodwill increased by $542 million related to acquisitions and declined by $13 million related to foreign currency translation and other adjustments. During 2015, identifiable intangible assets increased by $22 million related to acquisitions and declined by $22 million due to amortization, foreign currency translation and other adjustments. During 2014, identifiable intangible assets declined by $22 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 December 31, 2015 and 2014 was $184 million and $162 million, respectively, and accumulated amortization was $60 million and $38 million, respectively. During 2015, indefinite-lived identifiable intangible assets declined by $6 million related to a reclassification. During 2014, indefinite-lived identifiable intangible assets increased by $6 million related to acquisitions. The gross carrying amount of indefinite-lived identifiable intangible assets at December 31, 2015 and 2014 was $269 million and $275 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. Debt Issuance Costs Debt issuance costs are amortized based upon the terms of the respective debt obligations. The gross carrying amount of debt issuance costs at December 31, 2015 and 2014 was $318 million and $375 million, respectively, and accumulated amortization was $151 million and $156 million, respectively. Amortization of debt issuance costs is included in interest expense and was $35 million, $42 million and $55 million for 2015, 2014 and 2013, respectively. Professional Liability Claims Reserves for professional liability risks were $1.465 billion and $1.407 billion at December 31, 2015 and 2014, respectively. The current portion of the reserves, $350 million and $329 million at December 31, 2015 and 2014, respectively, is included in “other accrued expenses” in the consolidated balance sheets. Provisions for losses related to professional liability risks were $344 million, $395 million and $314 million for 2015, 2014 and 2013, 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 at both December 31, 2015 and 2014 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 2015 and 2014, $305 million and $268 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 $15 million per occurrence self-insured retention, 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 $25 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 $35 million and $20 million at December 31, 2015 and 2014, respectively, recorded in “other assets,” and $9 million and $5 million at December 31, 2015 and 2014, respectively, recorded in “other current assets.” Financial Instruments Derivative financial instruments are employed to manage interest rate risks, and are not used for trading or speculative purposes. We recognize our interest rate swap derivative instruments in the consolidated balance sheets at fair value. Changes in the fair value of derivatives are recognized periodically in stockholders’ equity, as a component of other comprehensive income (loss), provided the derivative financial instrument qualifies for hedge accounting. 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. 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. We recognized $47 million ($46 million Medicare and $1 million Medicaid), $125 million ($118 million Medicare and $7 million Medicaid) and $216 million ($183 million Medicare and $33 million Medicaid) of electronic health record incentive income during the years ended December 31, 2015, 2014 and 2013, respectively. At December 31, 2014, we had $39 million (none at December 31, 2015) of deferred EHR incentive income, which represented initial incentive payments received for which EHR incentive income had 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 2015 presentation.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2015
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, and all performance share units (“PSUs”) vest based both upon continued employment over a specific period of time and upon the achievement of predetermined financial targets over time. We granted 1,746,300 and 3,445,000 SARs and 3,105,000 and 3,832,100 RSUs and PSUs under the Stock Incentive Plan during 2015 and 2014, respectively. At December 31, 2015, there were 15,291,000 stock options and SARs outstanding and exercisable, and there were 25,386,000 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). At December 31, 2015, 10,812,700 shares of common stock were reserved for issuance under the ESPP provisions. During 2015 and 2014, the Company recognized $8 million and $2 million of compensation expense related to the ESPP, respectively. Stock Option, SAR, RSU and PSU 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 continued employment and the achievement of certain financial targets (“Performance Stock Options and SARs”, “Performance RSUs” and “PSUs”). PSUs have a three-year cumulative earnings per share target, and the number of PSUs earned can vary from zero (for actual performance of less than 80% of target) to two times the original PSU grant (for actual performance of 120% or more of target). 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. 2015 2014 2013 Risk-free interest rate 1.59 % 1.96 % 1.20 % Expected volatility 36 % 37 % 45 % 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 2015, 2014 and 2013 is summarized below (share amounts in thousands): Time Performance Total Weighted Weighted Aggregate Options and SARs 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 ) 25.50 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 Granted 1,746 — 1,746 69.16 Exercised (4,093 ) (3,988 ) (8,081 ) 12.77 Cancelled (539 ) (329 ) (868 ) 32.59 Options and SARs outstanding, December 31, 2015 12,165 10,427 22,592 27.73 5.3 years $ 950 Options and SARs exercisable, December 31, 2015 7,648 7,643 15,291 $ 18.74 4.2 years $ 780 The weighted average fair values of stock options and SARs granted during 2015, 2014 and 2013 were $26.10, $19.13 and $16.68 per share, respectively. The total intrinsic value of stock options and SARs exercised in the year ended December 31, 2015 was $544 million. As of December 31, 2015, the unrecognized compensation cost related to nonvested stock options and SARs was $87 million. Information regarding Time RSUs, Performance RSUs and PSUs activity during 2015, 2014 and 2013 is summarized below (share amounts in thousands): Time RSUs Performance PSUs Total RSUs and PSUs Weighted RSUs and PSUs 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 ) 27.30 Cancelled (449 ) (213 ) — (662 ) 31.91 RSUs and PSUs outstanding, December 31, 2013 5,099 2,399 — 7,498 33.30 Granted 2,603 1,229 — 3,832 48.53 Vested (1,423 ) (692 ) — (2,115 ) 32.56 Cancelled (384 ) (155 ) — (539 ) 38.30 RSUs and PSUs outstanding, December 31, 2014 5,895 2,781 — 8,676 39.89 Granted 1,694 — 1,411 3,105 69.43 Vested (1,953 ) (928 ) — (2,881 ) 37.61 Cancelled (334 ) (113 ) (40 ) (487 ) 47.26 RSUs and PSUs outstanding, December 31, 2015 5,302 1,740 1,371 8,413 51.15 As of December 31, 2015, the unrecognized compensation cost related to RSUs and PSUs was $342 million.

Acquisitions and Dispositions

Acquisitions and Dispositions	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Acquisitions and Dispositions	NOTE 3 — ACQUISITIONS AND DISPOSITIONS During 2015, we paid $15 million to acquire a hospital, and we paid $336 million to acquire nonhospital health care entities. 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. 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 $323 million, $542 million and $253 million in 2015, 2014 and 2013, 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 2015, we received proceeds of $73 million and recognized a net pretax loss of $5 million ($3 million after tax) related to the sale of a hospital facility and sales of real estate and other investments. 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.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 4 — INCOME TAXES The provision for income taxes consists of the following (dollars in millions): 2015 2014 2013 Current: Federal $ 1,259 $ 916 $ 827 State 119 102 86 Foreign 40 52 44 Deferred: Federal (163 ) 3 (53 ) State (27 ) (5 ) 20 Foreign 33 40 26 $ 1,261 $ 1,108 $ 950 The provision for income taxes reflects $10 million and $9 million ($7 million and $6 million net of tax, respectively) of interest expense related to taxing authority examinations and $4 million ($3 million net of tax) of reductions in interest related to taxing authority examinations for the years ended December 31, 2015, 2014 and 2013, respectively. Our foreign pretax income was $178 million, $238 million and $187 million for the years ended December 31, 2015, 2014 and 2013, respectively. A reconciliation of the federal statutory rate to the effective income tax rate follows: 2015 2014 2013 Federal statutory rate 35.0 % 35.0 % 35.0 % State income taxes, net of federal tax benefit 1.6 2.3 2.3 Change in liability for uncertain tax positions 0.2 0.5 0.5 Tax exempt interest income (0.1 ) (0.1 ) (0.2 ) Other items, net 0.5 (0.5 ) 0.3 Effective income tax rate on income applicable to HCA Holdings, Inc. 37.2 37.2 37.9 Income attributable to noncontrolling interests from consolidated partnerships (5.3 ) (5.4 ) (5.7 ) Effective income tax rate on income before income taxes 31.9 % 31.8 % 32.2 % A summary of the items comprising the deferred tax assets and liabilities at December 31 follows (dollars in millions): 2015 2014 Assets Liabilities Assets Liabilities Depreciation and fixed asset basis differences $ — $ 222 $ — $ 226 Allowances for professional liability and other risks 443 — 403 — Accounts receivable 363 — 341 — Compensation 334 — 272 — Other 845 820 756 745 $ 1,985 $ 1,042 $ 1,772 $ 971 At December 31, 2015, federal and state net operating loss carryforwards (expiring in years 2018 through 2034) available to offset future taxable income approximated $105 million and $144 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): 2015 2014 Balance at January 1 $ 503 $ 445 Additions based on tax positions related to the current year 13 3 Additions for tax positions of prior years 22 72 Reductions for tax positions of prior years (45 ) (11 ) Settlements — (1 ) Lapse of applicable statutes of limitations (6 ) (5 ) Balance at December 31 $ 487 $ 503 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. Our liability for unrecognized tax benefits was $554 million, including accrued interest of $73 million and excluding $6 million that was recorded as reductions of the related deferred tax assets, as of December 31, 2015 ($548 million, $58 million and $13 million, respectively, as of December 31, 2014). Unrecognized tax benefits of $233 million ($205 million as of December 31, 2014) 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, 2015
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, RSUs and PSUs, computed using the treasury stock method. During 2015, 2014 and 2013, we repurchased 31,991,200 shares, 28,583,200 shares and 10,656,400 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, 2015, 2014 and 2013 (dollars and shares in millions, except per share amounts): 2015 2014 2013 Net income attributable to HCA Holdings, Inc $ 2,129 $ 1,875 $ 1,556 Weighted average common shares outstanding 414.193 435.668 445.066 Effect of dilutive incremental shares 12.528 14.684 16.847 Shares used for diluted earnings per share 426.721 450.352 461.913 Earnings per share: Basic earnings per share $ 5.14 $ 4.30 $ 3.50 Diluted earnings per share $ 4.99 $ 4.16 $ 3.37

Investments of Insurance Subsid

Investments of Insurance Subsidiaries	12 Months Ended
	Dec. 31, 2015
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): 2015 Amortized Unrealized Fair Gains Losses Debt securities: States and municipalities $ 428 $ 17 $ (1 ) $ 444 Money market funds 34 — — 34 462 17 (1 ) 478 Equity securities — 4 — 4 $ 462 $ 21 $ (1 ) 482 Amounts classified as current assets (50 ) Investment carrying value $ 432 2014 Amortized Unrealized Fair 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 At December 31, 2015 and 2014, 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, 2015 were as follows (dollars in millions): Amortized Fair Due in one year or less $ 94 $ 94 Due after one year through five years 162 166 Due after five years through ten years 125 133 Due after ten years 81 85 $ 462 $ 478 The average expected maturity of the investments in debt securities at December 31, 2015 was 3.8 years, compared to the average scheduled maturity of 5.4 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, 2015
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, 2015 (dollars in millions): Notional Maturity Date Fair Pay-fixed interest rate swaps $ 3,000 December 2016 $ (85 ) Pay-fixed interest rate swaps 1,000 December 2017 (25 ) During the next 12 months, we estimate $101 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, 2015 (dollars in millions): Derivatives in Cash Flow Hedging Relationships Amount of Loss Location of Loss Amount of Loss Interest rate swaps $ 22 Interest expense $ 125 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, 2015, we have not been required to post any collateral related to these agreements. If we had breached these provisions at December 31, 2015, we would have been required to settle our obligations under the agreements at their aggregate, estimated termination value of $112 million.

Assets and Liabilities Measured

Assets and Liabilities Measured at Fair Value	12 Months Ended
	Dec. 31, 2015
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 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. 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, 2015 and 2014, 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, 2015 and 2014, aggregated by the level in the fair value hierarchy within which those measurements fall (dollars in millions): December 31, 2015 Fair Value Fair Value Measurements Using Quoted Prices in Significant Other Significant Assets: Investments of insurance subsidiaries: Debt securities: States and municipalities $ 444 $ — $ 438 $ 6 Money market funds 34 34 — — 478 34 438 6 Equity securities 4 4 — — Investments of insurance subsidiaries 482 38 438 6 Less amounts classified as current assets (50 ) (34 ) (16 ) — $ 432 $ 4 $ 422 $ 6 Liabilities: Interest rate swaps (Income taxes and other liabilities) $ 110 $ — $ 110 $ — December 31, 2014 Fair Value Fair Value Measurements Using Quoted Prices in Significant Other Significant 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 $ — The estimated fair value of our long-term debt was $31.411 billion and $30.861 billion at December 31, 2015 and 2014, respectively, compared to carrying amounts, excluding net debt issuance costs, aggregating $30.655 billion and $29.645 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.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2015
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, 2015, follows (dollars in millions): 2015 2014 Senior secured asset-based revolving credit facility (effective interest rate of 1.8%) $ 3,030 $ 2,880 Senior secured revolving credit facility — — Senior secured term loan facilities (effective interest rate of 5.0%) 5,639 5,517 Senior secured notes (effective interest rate of 5.5%) 11,100 11,100 Other senior secured debt (effective interest rate of 5.8%) 634 573 Senior secured debt 20,403 20,070 Senior unsecured notes (effective interest rate of 6.5%) 10,252 9,575 Net debt issuance costs (167 ) (219 ) Total debt (average life of 6.2 years, rates averaging 5.4%) 30,488 29,426 Less amounts due within one year 233 338 $ 30,255 $ 29,088 2015 Activity During December 2015, we issued $500 million aggregate principal amount of 5.875% senior notes due 2026. We used the net proceeds for general corporate purposes. During November 2015, we issued $1.000 billion aggregate principal amount of 5.875% senior notes due 2026. We used the net proceeds to redeem all $1.000 billion aggregate principal amount of our outstanding 6.500% senior notes due 2016. The pretax loss on retirement of debt related to this redemption was $10 million. During June 2015, we entered into a joinder agreement to retire certain of our existing senior secured term loans using proceeds from a new $1.400 billion senior secured term loan credit facility maturing on June 10, 2020. The pretax loss on retirement of debt was $3 million. During May 2015, we issued $1.600 billion aggregate principal amount of 5.375% senior notes due 2025. We used the net proceeds to redeem all $1.525 billion aggregate principal amount of our outstanding 7 3 / 4 % senior notes due 2021. The pretax loss on retirement of debt related to this redemption was $122 million. 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 7 1 / 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 8 1 / 2 % senior secured notes due 2019 and all $1.250 billion aggregate principal amount of our outstanding 7 7 / 8 % senior secured notes due 2020. The pretax loss on retirement of debt related to these redemptions was $226 million. 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 ($3.030 billion outstanding at December 31, 2015) (the “ABL credit facility”); (ii) a $2.000 billion senior secured revolving credit facility maturing on February 26, 2019 (none outstanding at December 31, 2015 without giving effect to certain outstanding letters of credit); (iii) a $1.365 billion senior secured term loan A-5 facility maturing on June 10, 2020; (iv) a $2.319 billion senior secured term loan B-4 facility maturing on May 1, 2018; and (v) a $1.955 billion senior secured term loan B-5 facility maturing on March 31, 2017. We refer to the facilities described under (ii) through (v) 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 consists of (i) $3.000 billion aggregate principal amount of 6.50% first lien notes due 2020; (ii) $1.350 billion aggregate principal amount of 5.875% first lien notes due 2022; (iii) $1.250 billion aggregate principal amount of 4.75% first lien notes due 2023; (iv) $1.500 billion aggregate principal amount of 3.75% first lien notes due 2019; (v) $2.000 billion aggregate principal amount of 5.00% first lien notes due 2024; (vi) $600 million aggregate principal amount of 4.25% first lien notes due 2019; and (vii) $1.400 billion aggregate principal amount of 5.25% first lien notes due 2025. Capital leases and other secured debt totaled $634 million at December 31, 2015. We use interest rate swap agreements to manage the variable rate exposure of our debt portfolio. At December 31, 2015, 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) $8.391 billion aggregate principal amount of senior notes with maturities ranging from 2018 to 2033; (ii) an aggregate principal amount of $125 million medium-term notes maturing 2025; (iii) an aggregate principal amount of $736 million debentures with maturities ranging from 2023 to 2095; and (iv) an aggregate principal amount of $1.000 billion senior notes due 2021. 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 2017 through 2020, excluding amounts under the ABL credit facility, are $2.145 billion, $2.918 billion, $2.227 billion and $4.125 billion, respectively.

Contingencies and Legal Claim C

Contingencies and Legal Claim Costs	12 Months Ended
	Dec. 31, 2015
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, financial position or liquidity. 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 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. The Company subsequently learned that the government’s inquiries related to three qui tam qui tam qui tam qui tam qui tam qui tam qui tam 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 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. In November 2015, following consideration of additional evidence, the Authority issued a Provisional Decision that again found there were adverse effects on competition in the private hospital market in central London. The Provisional Decision modified some of the Authority’s earlier factual conclusions and acknowledged certain mitigating factors for some of the effects noted in the prior decision. The Provisional Decision also offers some additional potential remedies, and the Authority is now consulting on remedies for the adverse competitive effects. A Provisional Decision on Remedies is expected during the first quarter of 2016, with a Final Report anticipated in May 2016. If dissatisfied with the Final Report, HCA will have an opportunity to appeal to the Competitive Appeal Tribunal. 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. Following the close of discovery, plaintiffs and defendants each filed motions for summary judgment and to strike certain of the expert witnesses. As described below, a preliminary agreement to settle the shareholder class actions has been reached. In addition to the above described consolidated shareholder class action, 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 did not act on the motion. On November 3, 2015, the Company reached a preliminary agreement in principle to settle the Schuh Sutton, Schroeder Bagot Schuh Bagot The monetary terms of the settlement in the Schuh 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 commitment. 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 accrued 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. The parties also agreed on an additional amount for attorneys’ fees for the plaintiff for the accounting phase of the case. The parties filed post-trial motions, on which the court ruled on October 21, 2015. The court denied defendants’ motion to have the court change its rulings on liability and damages related to the capital expenditures issue. The court granted the plaintiff’s motion for an award of additional pre-judgment interest, but did not specify whether the interest awarded was simple interest or would be compounded. The court subsequently concluded that interest was to be compounded, and on December 9, 2015, the court entered judgment in the case in the total sum of $434 million, with interest continuing to accrue at 9% per annum, compounded annually, from and after November 19, 2015, until the matter is resolved. At December 31, 2015, the Company had an accrued liability of $438 million for the damages, costs and interest related to this litigation. On January 15, 2016, the Company filed a Notice of Appeal in the Missouri Court of Appeals for the Western District. The schedule for hearing the appeal has not yet been set.

Leases

Leases	12 Months Ended
	Dec. 31, 2015
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, 2016 $ 283 2017 267 2018 216 2019 182 2020 149 Thereafter 976 2,073 Less sublease income (18 ) $ 2,055

Capital Stock

Capital Stock	12 Months Ended
	Dec. 31, 2015
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 October 2015, May 2015 and February 2015, our board of directors authorized share repurchase programs for up to $3.0 billion, $1.0 billion and $1.0 billion, respectively, of our outstanding common stock. During April 2015, the Company entered into an agreement to repurchase 3,806,500 shares of its common stock beneficially owned by affiliates of Bain Capital Investors, LLC (the “Bain Entities”) and certain charitable organizations that received shares of common stock as charitable contributions from certain partners and other employees of the Bain Entities at a purchase price of $77.26 per share, the closing price of the Company’s common stock on the New York Stock Exchange on April 17, 2015, less a discount of 1% (the “Share Repurchase”). The Share Repurchase was made pursuant to the February 2015 authorization. During 2015, we repurchased 28,184,700 shares of our common stock at an average price of $74.62 per share through market purchases, resulting in total repurchases pursuant to the October 2015, May 2015 and February 2015 authorizations of 31,991,200 shares of our common stock at an average price of $74.93 per share. At December 31, 2015, we had no repurchase authorization remaining under the $1.0 billion May 2015 and $1.0 billion February 2015 authorizations and $2.603 billion of repurchase authorization available under the $3.0 billion October 2015 authorization. During December 2014, the Company entered into an agreement to repurchase 7,612,900 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 6,415,700 shares of our common stock at an average purchase price of $68.96 per share (14,028,600 total shares repurchased at an average purchase price of $71.29 per share). During May 2014, certain of the Company’s stockholders, consisting principally of 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 (14,554,600 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 (10,656,400 shares) of our common stock from the Selling Stockholders at the net offering price ($46.92 per share).

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2015
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 $432 million for 2015, $404 million for 2014 and $374 million for 2013. 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 2015, $31 million for 2014 and $29 million for 2013. Accrued benefits liabilities under this plan totaled $164 million at December 31, 2015 and $156 million at December 31, 2014. 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 $33 million for 2015, $31 million for 2014 and $43 million for 2013. Accrued benefits liabilities under this plan totaled $207 million at December 31, 2015 and $231 million at December 31, 2014. We maintain defined benefit pension plans which resulted from certain hospital acquisitions in prior years. Benefits expense under these plans was $25 million for 2015, $13 million for 2014, and $37 million for 2013. Accrued benefits liabilities under these plans totaled $131 million at December 31, 2015 and $172 million at December 31, 2014.

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2015
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, 2015, the National Group included 84 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 78 hospitals located in Colorado, northern Georgia, Kansas, southern Kentucky, Louisiana, Mississippi, Missouri, Oklahoma, Tennessee and Texas. We also operate six 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, 2015 2014 2013 Revenues: National Group $ 18,756 $ 17,335 $ 15,975 American Group 18,872 17,532 16,487 Corporate and other 2,050 2,051 1,720 $ 39,678 $ 36,918 $ 34,182 Equity in earnings of affiliates: National Group $ (7 ) $ (15 ) $ (9 ) American Group (32 ) (31 ) (24 ) Corporate and other (7 ) 3 4 $ (46 ) $ (43 ) $ (29 ) Adjusted segment EBITDA: National Group $ 4,271 $ 3,848 $ 3,303 American Group 4,207 4,025 3,662 Corporate and other (563 ) (445 ) (391 ) $ 7,915 $ 7,428 $ 6,574 Depreciation and amortization: National Group $ 769 $ 749 $ 718 American Group 886 840 835 Corporate and other 249 231 200 $ 1,904 $ 1,820 $ 1,753 For the Years Ended December 31, 2015 2014 2013 Adjusted segment EBITDA $ 7,915 $ 7,428 $ 6,574 Depreciation and amortization 1,904 1,820 1,753 Interest expense 1,665 1,743 1,848 Losses (gains) on sales of facilities 5 (29 ) 10 Losses on retirement of debt 135 335 17 Legal claim costs 249 78 — Income before income taxes $ 3,957 $ 3,481 $ 2,946 December 31, 2015 2014 2013 Assets: National Group $ 11,332 $ 10,590 $ 10,208 American Group 15,240 15,091 13,911 Corporate and other 6,172 5,299 4,475 $ 32,744 $ 30,980 $ 28,594 National American Corporate Total Goodwill and other intangible assets: 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 Acquisitions 318 27 — 345 Foreign currency translation, amortization and other (7 ) (3 ) (20 ) (30 ) Balance at December 31, 2015 $ 1,481 $ 4,638 $ 612 $ 6,731

Other Comprehensive Loss

Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2015
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 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 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 ) Unrealized gains on available-for-sale securities, net of $1 of income taxes — — — — — Foreign currency translation adjustments, net of $25 income tax benefit — (38 ) — — (38 ) Defined benefit plans, net of $11 of income taxes — — 19 — 19 Change in fair value of derivative instruments, net of $14 income tax benefit — — — (22 ) (22 ) Expense reclassified into operations from other comprehensive income, net of $12 and $46, respectively, income tax benefits — — 20 79 99 Balances at December 31, 2015 $ 13 $ (74 ) $ (135 ) $ (69 ) $ (265 )

Accrued Expenses and Allowance

Accrued Expenses and Allowance for Doubtful Accounts	12 Months Ended
	Dec. 31, 2015
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): 2015 2014 Professional liability risks $ 350 $ 329 Interest 365 357 Taxes other than income 277 255 Other 888 796 $ 1,880 $ 1,737 A summary of activity for the allowance of doubtful accounts follows (dollars in millions): Balance Provision Accounts Balance Allowance for doubtful accounts: 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 Year ended December 31, 2015 5,011 3,913 (3,598 ) 5,326

Supplemental Condensed Consolid

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information	12 Months Ended
	Dec. 31, 2015
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 HCA Inc. is a 100% owned direct subsidiary of HCA Holdings, Inc. On November 23, 2010, HCA Holdings, Inc. issued $1.525 billion aggregate principal amount of 7 3 / 4 % senior unsecured notes due 2021, which were redeemed in full during May 2015. 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). NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) Our condensed consolidating balance sheets at December 31, 2015 and 2014 and condensed consolidating statements of comprehensive income and cash flows for each of the three years in the period ended December 31, 2015, 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, 2015 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed Revenues before provision for doubtful accounts $ — $ — $ 22,272 $ 21,319 $ — $ 43,591 Provision for doubtful accounts — — 2,099 1,814 — 3,913 Revenues — — 20,173 19,505 — 39,678 Salaries and benefits — — 9,131 8,984 — 18,115 Supplies — — 3,464 3,174 — 6,638 Other operating expenses (2 ) — 3,324 3,781 — 7,103 Electronic health record incentive income — — (31 ) (16 ) — (47 ) Equity in earnings of affiliates (2,352 ) — (6 ) (40 ) 2,352 (46 ) Depreciation and amortization — — 915 989 — 1,904 Interest expense 115 2,445 (766 ) (129 ) — 1,665 Losses (gains) on sales of facilities — — (2 ) 7 — 5 Losses on retirement of debt 122 13 — — — 135 Legal claim costs 120 129 — — — 249 Management fees — — (676 ) 676 — — (1,997 ) 2,587 15,353 17,426 2,352 35,721 Income (loss) before income taxes 1,997 (2,587 ) 4,820 2,079 (2,352 ) 3,957 Provision (benefit) for income taxes (132 ) (962 ) 1,758 597 — 1,261 Net income (loss) 2,129 (1,625 ) 3,062 1,482 (2,352 ) 2,696 Net income attributable to noncontrolling interests — — 92 475 — 567 Net income (loss) attributable to HCA Holdings, Inc. $ 2,129 $ (1,625 ) $ 2,970 $ 1,007 $ (2,352 ) $ 2,129 Comprehensive income (loss) attributable to HCA Holdings, Inc. $ 2,187 $ (1,568 ) $ 3,009 $ 969 $ (2,410 ) $ 2,187 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) 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 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 (2,003 ) — (7 ) (36 ) 2,003 (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 — — (1,799 ) 2,588 14,542 16,103 2,003 33,437 Income (loss) before income taxes 1,799 (2,588 ) 4,214 2,059 (2,003 ) 3,481 Provision (benefit) for income taxes (76 ) (961 ) 1,533 612 — 1,108 Net income (loss) 1,875 (1,627 ) 2,681 1,447 (2,003 ) 2,373 Net income attributable to noncontrolling interests — — 87 411 — 498 Net income (loss) attributable to HCA Holdings, Inc. $ 1,875 $ (1,627 ) $ 2,594 $ 1,036 $ (2,003 ) $ 1,875 Comprehensive income (loss) attributable to HCA Holdings, Inc. $ 1,809 $ (1,566 ) $ 2,508 $ 995 $ (1,937 ) $ 1,809 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) 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 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 (1,675 ) — (2 ) (27 ) 1,675 (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 — — (1,483 ) 2,268 14,119 14,657 1,675 31,236 Income (loss) before income taxes 1,483 (2,268 ) 3,661 1,745 (1,675 ) 2,946 Provision (benefit) for income taxes (73 ) (860 ) 1,362 521 — 950 Net income (loss) 1,556 (1,408 ) 2,299 1,224 (1,675 ) 1,996 Net income attributable to noncontrolling interests — — 69 371 — 440 Net income (loss) attributable to HCA Holdings, Inc. $ 1,556 $ (1,408 ) $ 2,230 $ 853 $ (1,675 ) $ 1,556 Comprehensive income (loss) attributable to HCA Holdings, Inc. $ 1,756 $ (1,324 ) $ 2,338 $ 861 $ (1,875 ) $ 1,756 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) HCA HOLDINGS, INC. CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2015 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed ASSETS Current assets: Cash and cash equivalents $ — $ — $ 155 $ 586 $ — $ 741 Accounts receivable, net — — 2,982 2,907 — 5,889 Inventories — — 852 587 — 1,439 Other 223 — 403 537 — 1,163 223 — 4,392 4,617 — 9,232 Property and equipment, net — — 8,328 6,686 — 15,014 Investments of insurance subsidiaries — — — 432 — 432 Investments in and advances to affiliates 24,380 — 14 164 (24,380 ) 178 Goodwill and other intangible assets — — 1,703 5,028 — 6,731 Other 943 — 19 195 — 1,157 $ 25,546 $ — $ 14,456 $ 17,122 $ (24,380 ) $ 32,744 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) Current liabilities: Accounts payable $ 2 $ — $ 1,375 $ 793 $ — $ 2,170 Accrued salaries — — 712 521 — 1,233 Other accrued expenses 172 340 458 910 — 1,880 Long-term debt due within one year — 114 65 54 — 233 174 454 2,610 2,278 — 5,516 Long-term debt, net 984 28,756 226 289 — 30,255 Intercompany balances 31,432 (11,171 ) (23,435 ) 3,174 — — Professional liability risks — — — 1,115 — 1,115 Income taxes and other liabilities 555 548 417 384 — 1,904 33,145 18,587 (20,182 ) 7,240 — 38,790 Stockholders’ (deficit) equity attributable to HCA Holdings, Inc. (7,599 ) (18,587 ) 34,510 8,457 (24,380 ) (7,599 ) Noncontrolling interests — — 128 1,425 — 1,553 (7,599 ) (18,587 ) 34,638 9,882 (24,380 ) (6,046 ) $ 25,546 $ — $ 14,456 $ 17,122 $ (24,380 ) $ 32,744 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) HCA HOLDINGS, INC. CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2014 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed 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 21,970 — 16 149 (21,970 ) 165 Goodwill and other intangible assets — — 1,705 4,711 — 6,416 Other 435 — 27 158 — 620 $ 22,889 $ — $ 13,650 $ 16,411 $ (21,970 ) $ 30,980 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) 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, net 2,499 26,124 185 280 — 29,088 Intercompany balances 27,685 (10,141 ) (21,405 ) 3,861 — — Professional liability risks — — — 1,078 — 1,078 Income taxes and other liabilities 553 487 605 187 — 1,832 30,783 17,018 (17,987 ) 7,664 — 37,478 Stockholders’ (deficit) equity attributable to HCA Holdings, Inc. (7,894 ) (17,018 ) 31,516 7,472 (21,970 ) (7,894 ) Noncontrolling interests — — 121 1,275 — 1,396 (7,894 ) (17,018 ) 31,637 8,747 (21,970 ) (6,498 ) $ 22,889 $ — $ 13,650 $ 16,411 $ (21,970 ) $ 30,980 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) HCA HOLDINGS, INC. CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE YEAR ENDED DECEMBER 31, 2015 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed Cash flows from operating activities: Net income (loss) $ 2,129 $ (1,625 ) $ 3,062 $ 1,482 $ (2,352 ) $ 2,696 Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Change in operating assets and liabilities (12 ) 44 (2,537 ) (1,731 ) — (4,236 ) Provision for doubtful accounts — — 2,099 1,814 — 3,913 Depreciation and amortization — — 915 989 — 1,904 Income taxes (160 ) — — — — (160 ) Losses (gains) on sales of facilities — — (2 ) 7 — 5 Losses on retirement of debt 122 13 — — — 135 Legal claim costs 20 129 — — — 149 Amortization of debt issuance costs 3 32 — — — 35 Share-based compensation 239 — — — — 239 Equity in earnings of affiliates (2,352 ) — — — 2,352 — Other 66 3 (4 ) (11 ) — 54 Net cash provided by (used in) operating activities 55 (1,404 ) 3,533 2,550 — 4,734 Cash flows from investing activities: Purchase of property and equipment — — (1,248 ) (1,127 ) — (2,375 ) Acquisition of hospitals and health care entities — — (51 ) (300 ) — (351 ) Disposal of hospitals and health care entities — — 48 25 — 73 Change in investments — — 9 54 — 63 Other — — (6 ) 13 — 7 Net cash used in investing activities — — (1,248 ) (1,335 ) — (2,583 ) Cash flows from financing activities: Issuance of long-term debt — 5,548 — — — 5,548 Net change in revolving bank credit facilities — 150 — — — 150 Repayment of long-term debt (1,632 ) (3,189 ) (59 ) (40 ) — (4,920 ) Distributions to noncontrolling interests — — (85 ) (410 ) — (495 ) Payment of debt issuance costs — (50 ) — — — (50 ) Repurchases of common stock (2,397 ) — — — — (2,397 ) Income tax benefits 235 — — — — 235 Changes in intercompany balances with affiliates, net 3,767 (1,055 ) (2,073 ) (639 ) — — Other (28 ) — — (19 ) — (47 ) Net cash (used in) provided by financing activities (55 ) 1,404 (2,217 ) (1,108 ) — (1,976 ) Change in cash and cash equivalents — — 68 107 — 175 Cash and cash equivalents at beginning of period — — 87 479 — 566 Cash and cash equivalents at end of period $ — $ — $ 155 $ 586 $ — $ 741 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) 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 Cash flows from operating activities: Net income (loss) $ 1,875 $ (1,627 ) $ 2,681 $ 1,447 $ (2,003 ) $ 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 debt issuance costs 3 39 — — — 42 Share-based compensation 163 — — — — 163 Equity in earnings of affiliates (2,003 ) — — — 2,003 — 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 ) Repurchases of common stock (1,750 ) — — — — (1,750 ) Income tax benefits 134 — — — — 134 Changes in intercompany balances with affiliates, net 1,678 388 (2,109 ) 43 — — Other (6 ) — — (19 ) — (25 ) 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 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) 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 Cash flows from operating activities: Net income (loss) $ 1,556 $ (1,408 ) $ 2,299 $ 1,224 $ (1,675 ) $ 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 debt issuance costs 3 52 — — — 55 Share-based compensation 113 — — — — 113 Equity in earnings of affiliates (1,675 ) — — — 1,675 — 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 ) Repurchases of common stock (500 ) — — — — (500 ) Income tax benefits 113 — — — — 113 Changes in intercompany balances with affiliates, net 342 1,602 (2,364 ) 420 — — Other (106 ) — — — — (106 ) 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 NOTE 17 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION AND OTHER COLLATERAL-RELATED INFORMATION (continued) 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, 2015, 2014 and 2013 are as follows (dollars in millions): 2015 2014 2013 Presentation in HCA Holdings, Inc. Consolidated Statements of Stockholders’ Deficit: Share-based benefit plans $ 523 $ 321 $ 139 Other (18 ) (6 ) (6 ) 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. $ 505 $ 315 $ 133 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.

Quarterly Consolidated Financia

Quarterly Consolidated Financial Information	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Quarterly Consolidated Financial Information	HCA HOLDINGS, INC. QUARTERLY CONSOLIDATED FINANCIAL INFORMATION (UNAUDITED) (Dollars in millions) 2015 First Second Third Fourth Revenues $ 9,676 $ 9,897 $ 9,856 $ 10,249 Net income $ 720 (a) $ 665 (b) $ 573 (c) $ 738 (d) Net income attributable to HCA Holdings, Inc. $ 591 (a) $ 507 (b) $ 449 (c) $ 582 (d) Basic earnings per share $ 1.41 $ 1.22 $ 1.08 $ 1.44 Diluted earnings per share $ 1.36 $ 1.18 $ 1.05 $ 1.40 2014 First Second Third Fourth Revenues $ 8,832 $ 9,230 $ 9,220 $ 9,636 Net income $ 454 (e) $ 632 (f) $ 611 (g) $ 676 (h) Net income attributable to HCA Holdings, Inc. $ 347 (e) $ 483 (f) $ 518 (g) $ 527 (h) Basic earnings per share $ 0.78 $ 1.10 $ 1.20 $ 1.22 Diluted earnings per share $ 0.76 $ 1.07 $ 1.16 $ 1.19 (a) First quarter results include $6 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements). (b) Second quarter results include $3 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $79 million of losses on retirement of debt (See Note 9 of the notes to consolidated financial statements). (c) Third quarter results include $2 million of losses 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). (d) Fourth quarter results include $4 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements), $7 million of loss on retirement of debt (See Note 9 of the notes to consolidated financial statements) and $108 million of legal claim costs (See Note 10 of the notes to consolidated financial statements). (e) 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). (f) 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). (g) Third quarter results include $9 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements). (h) 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).

Accounting Policies (Policies)

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
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 $327 million, $285 million and $287 million for the years ended December 31, 2015, 2014 and 2013, 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, 2015 Ratio 2014 Ratio 2013 Ratio Medicare $ 8,654 21.8 % $ 8,354 22.6 % $ 7,951 23.3 % Managed Medicare 4,133 10.4 3,614 9.8 3,279 9.6 Medicaid 1,705 4.3 1,848 5.0 1,480 4.3 Managed Medicaid 2,234 5.6 1,923 5.2 1,570 4.6 Managed care and other insurers 21,882 55.2 20,066 54.4 18,654 54.6 International (managed care and other insurers) 1,295 3.3 1,311 3.6 1,175 3.4 39,903 100.6 37,116 100.6 34,109 99.8 Uninsured 1,927 4.9 1,494 4.0 2,677 7.8 Other 1,761 4.4 1,477 4.0 1,254 3.7 Revenues before provision for doubtful accounts 43,591 109.9 40,087 108.6 38,040 111.3 Provision for doubtful accounts (3,913 ) (9.9 ) (3,169 ) (8.6 ) (3,858 ) (11.3 ) Revenues $ 39,678 100.0 % $ 36,918 100.0 % $ 34,182 100.0 % 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 $48 million, $50 million and $41 million in 2015, 2014 and 2013, respectively. The adjustments to estimated reimbursement amounts, which resulted in net increases to revenues, related primarily to cost reports filed during previous years were $85 million, $53 million and $68 million in 2015, 2014 and 2013, respectively. 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 may first attempt to provide assistance to uninsured patients to help determine whether they may qualify 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): 2015 Ratio 2014 Ratio 2013 Ratio Charity care $ 3,682 20 % $ 3,775 24 % $ 3,497 22 % Uninsured discounts 10,692 59 8,999 56 8,210 53 Provision for doubtful accounts 3,913 21 3,169 20 3,858 25 Total uncompensated care $ 18,287 100 % $ 15,943 100 % $ 15,565 100 % A summary of the estimated cost of total uncompensated care for the years ended December 31, follows (dollars in millions): 2015 2014 2013 Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization) $ 33,760 $ 31,478 $ 29,606 Cost-to-charges ratio (patient care costs as percentage of gross patient charges) 14.5 % 15.5 % 16.3 % Total uncompensated care $ 18,287 $ 15,943 $ 15,565 Multiply by the cost-to-charges ratio 14.5 % 15.5 % 16.3 % Estimated cost of total uncompensated care $ 2,652 $ 2,471 $ 2,537 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 31.5% for 2015, 30.2% for 2014 and 31.3% for 2013.
Recent Pronouncements	Recent Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) 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 was originally scheduled to become effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption was originally not to be permitted under US GAAP. In July 2015, the FASB decided to defer the effective date of the new revenue standard by one year, but will permit entities to adopt one year earlier if they choose (i.e., the original effective date). The FASB decided, based on its outreach to various stakeholders and forthcoming exposure drafts, which amend the new revenue standard, that a deferral was necessary to provide adequate time to effectively implement the new standard. We are continuing to evaluate the effects the adoption of this standard will have on our financial statements and financial disclosures. In April 2015, the FASB issued Accounting Standards Update 2015-03, Simplifying the Presentation of Debt Issuance Costs In November 2015, the FASB issued Accounting Standards Update 2015-17, Balance Sheet Classification of Deferred Taxes
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 $517 million and $511 million at December 31, 2015 and 2014, 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, 2015 and 2014, the allowance for doubtful accounts represented approximately 94.5% and 91.4%, respectively, of the $5.636 billion and $5.482 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 53 days, 54 days and 54 days at December 31, 2015, 2014 and 2013, respectively. Changes in general economic conditions, patient accounting service center operations, 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 $1.880 billion in 2015, $1.798 billion in 2014 and $1.733 billion in 2013. 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, 2015 and 2014, 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
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 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 is estimated based upon internal evaluations of 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 2015, 2014 and 2013. 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 2015, goodwill increased by $323 million related to acquisitions and declined by $2 million related to foreign currency translation and other adjustments. During 2014, goodwill increased by $542 million related to acquisitions and declined by $13 million related to foreign currency translation and other adjustments. During 2015, identifiable intangible assets increased by $22 million related to acquisitions and declined by $22 million due to amortization, foreign currency translation and other adjustments. During 2014, identifiable intangible assets declined by $22 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 December 31, 2015 and 2014 was $184 million and $162 million, respectively, and accumulated amortization was $60 million and $38 million, respectively. During 2015, indefinite-lived identifiable intangible assets declined by $6 million related to a reclassification. During 2014, indefinite-lived identifiable intangible assets increased by $6 million related to acquisitions. The gross carrying amount of indefinite-lived identifiable intangible assets at December 31, 2015 and 2014 was $269 million and $275 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.
Debt Issuance Costs	Debt Issuance Costs Debt issuance costs are amortized based upon the terms of the respective debt obligations. The gross carrying amount of debt issuance costs at December 31, 2015 and 2014 was $318 million and $375 million, respectively, and accumulated amortization was $151 million and $156 million, respectively. Amortization of debt issuance costs is included in interest expense and was $35 million, $42 million and $55 million for 2015, 2014 and 2013, respectively.
Professional Liability Claims	Professional Liability Claims Reserves for professional liability risks were $1.465 billion and $1.407 billion at December 31, 2015 and 2014, respectively. The current portion of the reserves, $350 million and $329 million at December 31, 2015 and 2014, respectively, is included in “other accrued expenses” in the consolidated balance sheets. Provisions for losses related to professional liability risks were $344 million, $395 million and $314 million for 2015, 2014 and 2013, 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 at both December 31, 2015 and 2014 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 2015 and 2014, $305 million and $268 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 $15 million per occurrence self-insured retention, 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 $25 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 $35 million and $20 million at December 31, 2015 and 2014, respectively, recorded in “other assets,” and $9 million and $5 million at December 31, 2015 and 2014, respectively, recorded in “other current assets.”
Financial Instruments	Financial Instruments Derivative financial instruments are employed to manage interest rate risks, and are not used for trading or speculative purposes. We recognize our interest rate swap derivative instruments in the consolidated balance sheets at fair value. Changes in the fair value of derivatives are recognized periodically in stockholders’ equity, as a component of other comprehensive income (loss), provided the derivative financial instrument qualifies for hedge accounting. 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. 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. We recognized $47 million ($46 million Medicare and $1 million Medicaid), $125 million ($118 million Medicare and $7 million Medicaid) and $216 million ($183 million Medicare and $33 million Medicaid) of electronic health record incentive income during the years ended December 31, 2015, 2014 and 2013, respectively. At December 31, 2014, we had $39 million (none at December 31, 2015) of deferred EHR incentive income, which represented initial incentive payments received for which EHR incentive income had not been recognized.
Fair Value Measurements and Disclosures	Accounting Standards Codification 820, Fair Value Measurements and Disclosures 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.
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.
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.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified to conform to the 2015 presentation.
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, 2015 and 2014, we determined the credit valuation adjustments were not significant to the overall valuation of our derivatives.
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, RSUs and PSUs, computed using the treasury stock method.
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, 2015
Accounting Policies [Abstract]
Schedule of Revenues from Third Party Payers, Uninsured and Other Payers	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, 2015 Ratio 2014 Ratio 2013 Ratio Medicare $ 8,654 21.8 % $ 8,354 22.6 % $ 7,951 23.3 % Managed Medicare 4,133 10.4 3,614 9.8 3,279 9.6 Medicaid 1,705 4.3 1,848 5.0 1,480 4.3 Managed Medicaid 2,234 5.6 1,923 5.2 1,570 4.6 Managed care and other insurers 21,882 55.2 20,066 54.4 18,654 54.6 International (managed care and other insurers) 1,295 3.3 1,311 3.6 1,175 3.4 39,903 100.6 37,116 100.6 34,109 99.8 Uninsured 1,927 4.9 1,494 4.0 2,677 7.8 Other 1,761 4.4 1,477 4.0 1,254 3.7 Revenues before provision for doubtful accounts 43,591 109.9 40,087 108.6 38,040 111.3 Provision for doubtful accounts (3,913 ) (9.9 ) (3,169 ) (8.6 ) (3,858 ) (11.3 ) Revenues $ 39,678 100.0 % $ 36,918 100.0 % $ 34,182 100.0 %
Schedule of Revenue Deductions Related to Uninsured Accounts	A summary of these amounts for the years ended December 31, follows (dollars in millions): 2015 Ratio 2014 Ratio 2013 Ratio Charity care $ 3,682 20 % $ 3,775 24 % $ 3,497 22 % Uninsured discounts 10,692 59 8,999 56 8,210 53 Provision for doubtful accounts 3,913 21 3,169 20 3,858 25 Total uncompensated care $ 18,287 100 % $ 15,943 100 % $ 15,565 100 %
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): 2015 2014 2013 Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization) $ 33,760 $ 31,478 $ 29,606 Cost-to-charges ratio (patient care costs as percentage of gross patient charges) 14.5 % 15.5 % 16.3 % Total uncompensated care $ 18,287 $ 15,943 $ 15,565 Multiply by the cost-to-charges ratio 14.5 % 15.5 % 16.3 % Estimated cost of total uncompensated care $ 2,652 $ 2,471 $ 2,537

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
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. 2015 2014 2013 Risk-free interest rate 1.59 % 1.96 % 1.20 % Expected volatility 36 % 37 % 45 % 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 2015, 2014 and 2013 is summarized below (share amounts in thousands): Time Performance Total Weighted Weighted Aggregate Options and SARs 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 ) 25.50 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 Granted 1,746 — 1,746 69.16 Exercised (4 093) (3,988 ) (8,081 ) 12.77 Cancelled (539 ) (329 ) (868 ) 32.59 Options and SARs outstanding, December 31, 2015 12,16 5 10,427 22,592 27.73 5.3 years $ 950 Options and SARs exercisable, December 31, 2015 7,648 7,643 15,291 $ 18.74 4.2 years $ 780
Schedule of Restricted Stock Units Activity	Information regarding Time RSUs, Performance RSUs and PSUs activity during 2015, 2014 and 2013 is summarized below (share amounts in thousands): Time RSUs Performance PSUs Total RSUs and PSUs Weighted RSUs and PSUs 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 ) 27.30 Cancelled (449 ) (213 ) — (662 ) 31.91 RSUs and PSUs outstanding, December 31, 2013 5,099 2,399 — 7,498 33.30 Granted 2,603 1,229 — 3,832 48.53 Vested (1,423 ) (692 ) — (2,115 ) 32.56 Cancelled (384 ) (155 ) — (539 ) 38.30 RSUs and PSUs outstanding, December 31, 2014 5,895 2,781 — 8,676 39.89 Granted 1,694 — 1,411 3,105 69.43 Vested (1,953 ) (928 ) — (2,881 ) 37.61 Cancelled (334 ) (113 ) (40 ) (487 ) 47.26 RSUs and PSUs outstanding, December 31, 2015 5,302 1,740 1,371 8,413 51.15

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The provision for income taxes consists of the following (dollars in millions): 2015 2014 2013 Current: Federal $ 1,259 $ 916 $ 827 State 119 102 86 Foreign 40 52 44 Deferred: Federal (163 ) 3 (53 ) State (27 ) (5 ) 20 Foreign 33 40 26 $ 1,261 $ 1,108 $ 950
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: 2015 2014 2013 Federal statutory rate 35.0 % 35.0 % 35.0 % State income taxes, net of federal tax benefit 1.6 2.3 2.3 Change in liability for uncertain tax positions 0.2 0.5 0.5 Tax exempt interest income (0.1 ) (0.1 ) (0.2 ) Other items, net 0.5 (0.5 ) 0.3 Effective income tax rate on income applicable to HCA Holdings, Inc. 37.2 37.2 37.9 Income attributable to noncontrolling interests from consolidated partnerships (5.3 ) (5.4 ) (5.7 ) Effective income tax rate on income before income taxes 31.9 % 31.8 % 32.2 %
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): 2015 2014 Assets Liabilities Assets Liabilities Depreciation and fixed asset basis differences $ — $ 222 $ — $ 226 Allowances for professional liability and other risks 443 — 403 — Accounts receivable 363 — 341 — Compensation 334 — 272 — Other 845 820 756 745 $ 1,985 $ 1,042 $ 1,772 $ 971
Schedule of Activity Related to Unrecognized Tax Benefits	The following table summarizes the activity related to our unrecognized tax benefits (dollars in millions): 2015 2014 Balance at January 1 $ 503 $ 445 Additions based on tax positions related to the current year 13 3 Additions for tax positions of prior years 22 72 Reductions for tax positions of prior years (45 ) (11 ) Settlements — (1 ) Lapse of applicable statutes of limitations (6 ) (5 ) Balance at December 31 $ 487 $ 503

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2015
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, 2015, 2014 and 2013 (dollars and shares in millions, except per share amounts): 2015 2014 2013 Net income attributable to HCA Holdings, Inc $ 2,129 $ 1,875 $ 1,556 Weighted average common shares outstanding 414.193 435.668 445.066 Effect of dilutive incremental shares 12.528 14.684 16.847 Shares used for diluted earnings per share 426.721 450.352 461.913 Earnings per share: Basic earnings per share $ 5.14 $ 4.30 $ 3.50 Diluted earnings per share $ 4.99 $ 4.16 $ 3.37

Investments of Insurance Subs31

Investments of Insurance Subsidiaries (Tables)	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of Investments	A summary of the insurance subsidiaries’ investments at December 31 follows (dollars in millions): 2015 Amortized Unrealized Fair Gains Losses Debt securities: States and municipalities $ 428 $ 17 $ (1 ) $ 444 Money market funds 34 — — 34 462 17 (1 ) 478 Equity securities — 4 — 4 $ 462 $ 21 $ (1 ) 482 Amounts classified as current assets (50 ) Investment carrying value $ 432 2014 Amortized Unrealized Fair 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
Schedule of Maturities of Investments	Scheduled maturities of investments in debt securities at December 31, 2015 were as follows (dollars in millions): Amortized Fair Due in one year or less $ 94 $ 94 Due after one year through five years 162 166 Due after five years through ten years 125 133 Due after ten years 81 85 $ 462 $ 478

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
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, 2015 (dollars in millions): Notional Maturity Date Fair Pay-fixed interest rate swaps $ 3,000 December 2016 $ (85 ) Pay-fixed interest rate swaps 1,000 December 2017 (25 )
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, 2015 (dollars in millions): Derivatives in Cash Flow Hedging Relationships Amount of Loss Location of Loss Amount of Loss Interest rate swaps $ 22 Interest expense $ 125

Assets and Liabilities Measur33

Assets and Liabilities Measured at Fair Value (Tables)	12 Months Ended
	Dec. 31, 2015
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, 2015 and 2014, aggregated by the level in the fair value hierarchy within which those measurements fall (dollars in millions): December 31, 2015 Fair Value Fair Value Measurements Using Quoted Prices in Significant Other Significant Assets: Investments of insurance subsidiaries: Debt securities: States and municipalities $ 444 $ — $ 438 $ 6 Money market funds 34 34 — — 478 34 438 6 Equity securities 4 4 — — Investments of insurance subsidiaries 482 38 438 6 Less amounts classified as current assets (50 ) (34 ) (16 ) — $ 432 $ 4 $ 422 $ 6 Liabilities: Interest rate swaps (Income taxes and other liabilities) $ 110 $ — $ 110 $ — December 31, 2014 Fair Value Fair Value Measurements Using Quoted Prices in Significant Other Significant 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 $ —

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	A summary of long-term debt at December 31, including related interest rates at December 31, 2015, follows (dollars in millions): 2015 2014 Senior secured asset-based revolving credit facility (effective interest rate of 1.8%) $ 3,030 $ 2,880 Senior secured revolving credit facility — — Senior secured term loan facilities (effective interest rate of 5.0%) 5,639 5,517 Senior secured notes (effective interest rate of 5.5%) 11,100 11,100 Other senior secured debt (effective interest rate of 5.8%) 634 573 Senior secured debt 20,403 20,070 Senior unsecured notes (effective interest rate of 6.5%) 10,252 9,575 Net debt issuance costs (167 ) (219 ) Total debt (average life of 6.2 years, rates averaging 5.4%) 30,488 29,426 Less amounts due within one year 233 338 $ 30,255 $ 29,088

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2015
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, 2016 $ 283 2017 267 2018 216 2019 182 2020 149 Thereafter 976 2,073 Less sublease income (18 ) $ 2,055

Segment and Geographic Inform36

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Schedule of Geographic Distributions of Revenues, Equity in Earnings of Affiliates, Adjusted Segment EBITDA and Depreciation and Amortization	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, 2015 2014 2013 Revenues: National Group $ 18,756 $ 17,335 $ 15,975 American Group 18,872 17,532 16,487 Corporate and other 2,050 2,051 1,720 $ 39,678 $ 36,918 $ 34,182 Equity in earnings of affiliates: National Group $ (7 ) $ (15 ) $ (9 ) American Group (32 ) (31 ) (24 ) Corporate and other (7 ) 3 4 $ (46 ) $ (43 ) $ (29 ) Adjusted segment EBITDA: National Group $ 4,271 $ 3,848 $ 3,303 American Group 4,207 4,025 3,662 Corporate and other (563 ) (445 ) (391 ) $ 7,915 $ 7,428 $ 6,574 Depreciation and amortization: National Group $ 769 $ 749 $ 718 American Group 886 840 835 Corporate and other 249 231 200 $ 1,904 $ 1,820 $ 1,753 For the Years Ended December 31, 2015 2014 2013 Adjusted segment EBITDA $ 7,915 $ 7,428 $ 6,574 Depreciation and amortization 1,904 1,820 1,753 Interest expense 1,665 1,743 1,848 Losses (gains) on sales of facilities 5 (29 ) 10 Losses on retirement of debt 135 335 17 Legal claim costs 249 78 — Income before income taxes $ 3,957 $ 3,481 $ 2,946 December 31, 2015 2014 2013 Assets: National Group $ 11,332 $ 10,590 $ 10,208 American Group 15,240 15,091 13,911 Corporate and other 6,172 5,299 4,475 $ 32,744 $ 30,980 $ 28,594 National American Corporate Total Goodwill and other intangible assets: 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 Acquisitions 318 27 — 345 Foreign currency translation, amortization and other (7 ) (3 ) (20 ) (30 ) Balance at December 31, 2015 $ 1,481 $ 4,638 $ 612 $ 6,731

Other Comprehensive Loss (Table

Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2015
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 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 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 ) Unrealized gains on available-for-sale securities, net of $1 of income taxes — — — — — Foreign currency translation adjustments, net of $25 income tax benefit — (38 ) — — (38 ) Defined benefit plans, net of $11 of income taxes — — 19 — 19 Change in fair value of derivative instruments, net of $14 income tax benefit — — — (22 ) (22 ) Expense reclassified into operations from other comprehensive income, net of $12 and $46, respectively, income tax benefits — — 20 79 99 Balances at December 31, 2015 $ 13 $ (74 ) $ (135 ) $ (69 ) $ (265 )

Accrued Expenses and Allowanc38

Accrued Expenses and Allowance for Doubtful Accounts (Tables)	12 Months Ended
	Dec. 31, 2015
Text Block [Abstract]
Summary of Other Accrued Expenses	A summary of other accrued expenses at December 31 follows (dollars in millions): 2015 2014 Professional liability risks $ 350 $ 329 Interest 365 357 Taxes other than income 277 255 Other 888 796 $ 1,880 $ 1,737
Summary of Allowance of Doubtful Accounts	A summary of activity for the allowance of doubtful accounts follows (dollars in millions): Balance Provision Accounts Balance Allowance for doubtful accounts: 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 Year ended December 31, 2015 5,011 3,913 (3,598 ) 5,326

Supplemental Condensed Consol39

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information (Tables)	12 Months Ended
	Dec. 31, 2015
Text Block [Abstract]
Schedule of Condensed Consolidating Comprehensive Income Statement	HCA HOLDINGS, INC. CONDENSED CONSOLIDATING COMPREHENSIVE INCOME STATEMENT FOR THE YEAR ENDED DECEMBER 31, 2015 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed Revenues before provision for doubtful accounts $ — $ — $ 22,272 $ 21,319 $ — $ 43,591 Provision for doubtful accounts — — 2,099 1,814 — 3,913 Revenues — — 20,173 19,505 — 39,678 Salaries and benefits — — 9,131 8,984 — 18,115 Supplies — — 3,464 3,174 — 6,638 Other operating expenses (2 ) — 3,324 3,781 — 7,103 Electronic health record incentive income — — (31 ) (16 ) — (47 ) Equity in earnings of affiliates (2,352 ) — (6 ) (40 ) 2,352 (46 ) Depreciation and amortization — — 915 989 — 1,904 Interest expense 115 2,445 (766 ) (129 ) — 1,665 Losses (gains) on sales of facilities — — (2 ) 7 — 5 Losses on retirement of debt 122 13 — — — 135 Legal claim costs 120 129 — — — 249 Management fees — — (676 ) 676 — — (1,997 ) 2,587 15,353 17,426 2,352 35,721 Income (loss) before income taxes 1,997 (2,587 ) 4,820 2,079 (2,352 ) 3,957 Provision (benefit) for income taxes (132 ) (962 ) 1,758 597 — 1,261 Net income (loss) 2,129 (1,625 ) 3,062 1,482 (2,352 ) 2,696 Net income attributable to noncontrolling interests — — 92 475 — 567 Net income (loss) attributable to HCA Holdings, Inc. $ 2,129 $ (1,625 ) $ 2,970 $ 1,007 $ (2,352 ) $ 2,129 Comprehensive income (loss) attributable to HCA Holdings, Inc. $ 2,187 $ (1,568 ) $ 3,009 $ 969 $ (2,410 ) $ 2,187 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 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 (2,003 ) — (7 ) (36 ) 2,003 (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 — — (1,799 ) 2,588 14,542 16,103 2,003 33,437 Income (loss) before income taxes 1,799 (2,588 ) 4,214 2,059 (2,003 ) 3,481 Provision (benefit) for income taxes (76 ) (961 ) 1,533 612 — 1,108 Net income (loss) 1,875 (1,627 ) 2,681 1,447 (2,003 ) 2,373 Net income attributable to noncontrolling interests — — 87 411 — 498 Net income (loss) attributable to HCA Holdings, Inc. $ 1,875 $ (1,627 ) $ 2,594 $ 1,036 $ (2,003 ) $ 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 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 (1,675 ) — (2 ) (27 ) 1,675 (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 — — (1,483 ) 2,268 14,119 14,657 1,675 31,236 Income (loss) before income taxes 1,483 (2,268 ) 3,661 1,745 (1,675 ) 2,946 Provision (benefit) for income taxes (73 ) (860 ) 1,362 521 — 950 Net income (loss) 1,556 (1,408 ) 2,299 1,224 (1,675 ) 1,996 Net income attributable to noncontrolling interests — — 69 371 — 440 Net income (loss) attributable to HCA Holdings, Inc. $ 1,556 $ (1,408 ) $ 2,230 $ 853 $ (1,675 ) $ 1,556 Comprehensive income (loss) attributable to HCA Holdings, Inc. $ 1,756 $ (1,324 ) $ 2,338 $ 861 $ (1,875 ) $ 1,756
Schedule of Condensed Consolidating Balance Sheet	HCA HOLDINGS, INC. CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2015 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed ASSETS Current assets: Cash and cash equivalents $ — $ — $ 155 $ 586 $ — $ 741 Accounts receivable, net — — 2,982 2,907 — 5,889 Inventories — — 852 587 — 1,439 Other 223 — 403 537 — 1,163 223 — 4,392 4,617 — 9,232 Property and equipment, net — — 8,328 6,686 — 15,014 Investments of insurance subsidiaries — — — 432 — 432 Investments in and advances to affiliates 24,380 — 14 164 (24,380 ) 178 Goodwill and other intangible assets — — 1,703 5,028 — 6,731 Other 943 — 19 195 — 1,157 $ 25,546 $ — $ 14,456 $ 17,122 $ (24,380 ) $ 32,744 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) Current liabilities: Accounts payable $ 2 $ — $ 1,375 $ 793 $ — $ 2,170 Accrued salaries — — 712 521 — 1,233 Other accrued expenses 172 340 458 910 — 1,880 Long-term debt due within one year — 114 65 54 — 233 174 454 2,610 2,278 — 5,516 Long-term debt, net 984 28,756 226 289 — 30,255 Intercompany balances 31,432 (11,171 ) (23,435 ) 3,174 — — Professional liability risks — — — 1,115 — 1,115 Income taxes and other liabilities 555 548 417 384 — 1,904 33,145 18,587 (20,182 ) 7,240 — 38,790 Stockholders’ (deficit) equity attributable to HCA Holdings, Inc. (7,599 ) (18,587 ) 34,510 8,457 (24,380 ) (7,599 ) Noncontrolling interests — — 128 1,425 — 1,553 (7,599 ) (18,587 ) 34,638 9,882 (24,380 ) (6,046 ) $ 25,546 $ — $ 14,456 $ 17,122 $ (24,380 ) $ 32,744 HCA HOLDINGS, INC. CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2014 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed 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 21,970 — 16 149 (21,970 ) 165 Goodwill and other intangible assets — — 1,705 4,711 — 6,416 Other 435 — 27 158 — 620 $ 22,889 $ — $ 13,650 $ 16,411 $ (21,970 ) $ 30,980 LIABILITIES AND STOCKHOLDERS’ (DEFICIT) 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, net 2,499 26,124 185 280 — 29,088 Intercompany balances 27,685 (10,141 ) (21,405 ) 3,861 — — Professional liability risks — — — 1,078 — 1,078 Income taxes and other liabilities 553 487 605 187 — 1,832 30,783 17,018 (17,987 ) 7,664 — 37,478 Stockholders’ (deficit) equity attributable to HCA Holdings, Inc. (7,894 ) (17,018 ) 31,516 7,472 (21,970 ) (7,894 ) Noncontrolling interests — — 121 1,275 — 1,396 (7,894 ) (17,018 ) 31,637 8,747 (21,970 ) (6,498 ) $ 22,889 $ — $ 13,650 $ 16,411 $ (21,970 ) $ 30,980
Schedule of Condensed Consolidating Statement of Cash Flows	HCA HOLDINGS, INC. CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE YEAR ENDED DECEMBER 31, 2015 (Dollars in millions) HCA HCA Inc. Subsidiary Subsidiary Eliminations Condensed Cash flows from operating activities: Net income (loss) $ 2,129 $ (1,625 ) $ 3,062 $ 1,482 $ (2,352 ) $ 2,696 Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Change in operating assets and liabilities (12 ) 44 (2,537 ) (1,731 ) — (4,236 ) Provision for doubtful accounts — — 2,099 1,814 — 3,913 Depreciation and amortization — — 915 989 — 1,904 Income taxes (160 ) — — — — (160 ) Losses (gains) on sales of facilities — — (2 ) 7 — 5 Losses on retirement of debt 122 13 — — — 135 Legal claim costs 20 129 — — — 149 Amortization of debt issuance costs 3 32 — — — 35 Share-based compensation 239 — — — — 239 Equity in earnings of affiliates (2,352 ) — — — 2,352 — Other 66 3 (4 ) (11 ) — 54 Net cash provided by (used in) operating activities 55 (1,404 ) 3,533 2,550 — 4,734 Cash flows from investing activities: Purchase of property and equipment — — (1,248 ) (1,127 ) — (2,375 ) Acquisition of hospitals and health care entities — — (51 ) (300 ) — (351 ) Disposal of hospitals and health care entities — — 48 25 — 73 Change in investments — — 9 54 — 63 Other — — (6 ) 13 — 7 Net cash used in investing activities — — (1,248 ) (1,335 ) — (2,583 ) Cash flows from financing activities: Issuance of long-term debt — 5,548 — — — 5,548 Net change in revolving bank credit facilities — 150 — — — 150 Repayment of long-term debt (1,632 ) (3,189 ) (59 ) (40 ) — (4,920 ) Distributions to noncontrolling interests — — (85 ) (410 ) — (495 ) Payment of debt issuance costs — (50 ) — — — (50 ) Repurchases of common stock (2,397 ) — — — — (2,397 ) Income tax benefits 235 — — — — 235 Changes in intercompany balances with affiliates, net 3,767 (1,055 ) (2,073 ) (639 ) — — Other (28 ) — — (19 ) — (47 ) Net cash (used in) provided by financing activities (55 ) 1,404 (2,217 ) (1,108 ) — (1,976 ) Change in cash and cash equivalents — — 68 107 — 175 Cash and cash equivalents at beginning of period — — 87 479 — 566 Cash and cash equivalents at end of period $ — $ — $ 155 $ 586 $ — $ 741 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 Cash flows from operating activities: Net income (loss) $ 1,875 $ (1,627 ) $ 2,681 $ 1,447 $ (2,003 ) $ 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 debt issuance costs 3 39 — — — 42 Share-based compensation 163 — — — — 163 Equity in earnings of affiliates (2,003 ) — — — 2,003 — 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 ) Repurchases of common stock (1,750 ) — — — — (1,750 ) Income tax benefits 134 — — — — 134 Changes in intercompany balances with affiliates, net 1,678 388 (2,109 ) 43 — — Other (6 ) — — (19 ) — (25 ) 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 Cash flows from operating activities: Net income (loss) $ 1,556 $ (1,408 ) $ 2,299 $ 1,224 $ (1,675 ) $ 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 debt issuance costs 3 52 — — — 55 Share-based compensation 113 — — — — 113 Equity in earnings of affiliates (1,675 ) — — — 1,675 — 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 ) Repurchases of common stock (500 ) — — — — (500 ) Income tax benefits 113 — — — — 113 Changes in intercompany balances with affiliates, net 342 1,602 (2,364 ) 420 — — Other (106 ) — — — — (106 ) 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
Schedule of Consolidated Statements of Stockholder's Deficit	The Hospital Company Consolidated Statements of Stockholder’s Deficit presentation for the years ended December 31, 2015, 2014 and 2013 are as follows (dollars in millions): 2015 2014 2013 Presentation in HCA Holdings, Inc. Consolidated Statements of Stockholders’ Deficit: Share-based benefit plans $ 523 $ 321 $ 139 Other (18 ) (6 ) (6 ) 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. $ 505 $ 315 $ 133

Quarterly Consolidated Financ40

Quarterly Consolidated Financial Information (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Consolidated Financial Information	HCA HOLDINGS, INC. QUARTERLY CONSOLIDATED FINANCIAL INFORMATION (UNAUDITED) (Dollars in millions) 2015 First Second Third Fourth Revenues $ 9,676 $ 9,897 $ 9,856 $ 10,249 Net income $ 720 (a) $ 665 (b) $ 573 (c) $ 738 (d) Net income attributable to HCA Holdings, Inc. $ 591 (a) $ 507 (b) $ 449 (c) $ 582 (d) Basic earnings per share $ 1.41 $ 1.22 $ 1.08 $ 1.44 Diluted earnings per share $ 1.36 $ 1.18 $ 1.05 $ 1.40 2014 First Second Third Fourth Revenues $ 8,832 $ 9,230 $ 9,220 $ 9,636 Net income $ 454 (e) $ 632 (f) $ 611 (g) $ 676 (h) Net income attributable to HCA Holdings, Inc. $ 347 (e) $ 483 (f) $ 518 (g) $ 527 (h) Basic earnings per share $ 0.78 $ 1.10 $ 1.20 $ 1.22 Diluted earnings per share $ 0.76 $ 1.07 $ 1.16 $ 1.19 (a) First quarter results include $6 million of gains on sales of facilities (See Note 3 of the notes to consolidated financial statements). (b) Second quarter results include $3 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements) and $79 million of losses on retirement of debt (See Note 9 of the notes to consolidated financial statements). (c) Third quarter results include $2 million of losses 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). (d) Fourth quarter results include $4 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements), $7 million of loss on retirement of debt (See Note 9 of the notes to consolidated financial statements) and $108 million of legal claim costs (See Note 10 of the notes to consolidated financial statements). (e) 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). (f) 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). (g) Third quarter results include $9 million of losses on sales of facilities (See Note 3 of the notes to consolidated financial statements). (h) 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).

Accounting Policies - Additiona

Accounting Policies - Additional Information (Detail)	12 Months Ended			180 Months Ended
	Dec. 31, 2015USD ($)HospitalStateSurgery_CenterClaim	Dec. 31, 2014USD ($)Claims	Dec. 31, 2013USD ($)	Dec. 31, 2015USD ($)HospitalStateSurgery_CenterClaim
Summary Of Significant Accounting Policies [Line Items]
Number of owned and operated hospitals | Hospital	168			168
Number of freestanding surgery centers | Surgery_Center	116			116
Number of facilities locations | State	20			20
General and administrative expense	$ 327,000,000	$ 285,000,000	$ 287,000,000
Adjustments to estimated reimbursement filed during respective year	48,000,000	50,000,000	41,000,000
Adjustments to estimated reimbursement filed during previous years	$ 85,000,000	$ 53,000,000	$ 68,000,000
Percentage of the sum of revenues, uninsured discounts and charity care	31.50%	30.20%	31.30%
Outstanding checks unpresented for payment	$ 517,000,000	$ 511,000,000		$ 517,000,000
Allowance for doubtful accounts percentage of accounts receivable	94.50%	91.40%
Allowance for doubtful accounts	$ 5,636,000,000	$ 5,482,000,000		5,636,000,000
Days revenues in accounts receivable	53 days	54 days	54 days
Depreciation expense	$ 1,880,000,000	$ 1,798,000,000	$ 1,733,000,000
Goodwill impairments	0	0	0	102,000,000
Intangible assets increased	22,000,000	6,000,000		22,000,000
Intangible assets decreased	22,000,000	22,000,000
Gross carrying amount of intangible assets	184,000,000	162,000,000
Accumulated amortization of intangible assets	60,000,000	38,000,000		60,000,000
Gross carrying amount of indefinite-lived intangible assets	269,000,000	275,000,000		269,000,000
Deferred loan costs	318,000,000	375,000,000		318,000,000
Deferred loan costs, accumulated amortization	151,000,000	156,000,000		151,000,000
Amortization of debt issuance costs	35,000,000	42,000,000	55,000,000
Reserves for professional liability risks	1,465,000,000	1,407,000,000		1,465,000,000
Current portion of professional liability risks reserves	350,000,000	329,000,000		$ 350,000,000
Provisions for losses related to professional liability risks	$ 344,000,000	$ 395,000,000	314,000,000
Reserves for professional liability risks cover individual claims	2,700	2,700		2,700
Net payments of professional and general liability claims	$ 305,000,000	$ 268,000,000
Self-insured retention amount per occurrence	15,000,000
Maximum amount losses per occurrence	50,000,000
Reinsurance for professional liability risks retention level of amount per occurrence	25,000,000
Amounts receivable under reinsurance contracts recorded in other assets	35,000,000	20,000,000		$ 35,000,000
Amounts receivable under reinsurance contracts recorded in other current assets	9,000,000	5,000,000		9,000,000
Electronic health record incentive income	47,000,000	125,000,000	216,000,000
Incentive income, Medicaid	1,000,000	7,000,000	33,000,000
Incentive income, Medicare	46,000,000	118,000,000	$ 183,000,000
Electronic health record deferred incentive income	0	39,000,000		$ 0
Acquisitions [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill increase (decrease)	323,000,000	542,000,000
Foreign Currency Translation And Other [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill increase (decrease)	$ 2,000,000	$ 13,000,000
Insurance Subsidiary [Member]
Summary Of Significant Accounting Policies [Line Items]
Insurance subsidiary ownership percentage	100.00%			100.00%
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

Accounting Policies - Schedule of Revenues from Third Party Payers, Uninsured and Other Payers (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$ 39,903	$ 37,116	$ 34,109
Uninsured									1,927	1,494	2,677
Other									1,761	1,477	1,254
Revenues before provision for doubtful accounts									43,591	40,087	38,040
Provision for doubtful accounts									(3,913)	(3,169)	(3,858)
Revenues	$ 10,249	$ 9,856	$ 9,897	$ 9,676	$ 9,636	$ 9,220	$ 9,230	$ 8,832	$ 39,678	$ 36,918	$ 34,182
Revenues from third party payers, Ratio									100.60%	100.60%	99.80%
Uninsured, Ratio									4.90%	4.00%	7.80%
Other, Ratio									4.40%	4.00%	3.70%
Revenues before provision for doubtful accounts, Ratio									109.90%	108.60%	111.30%
Provision for doubtful accounts, Ratio									(9.90%)	(8.60%)	(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									$ 8,654	$ 8,354	$ 7,951
Revenues from third party payers, Ratio									21.80%	22.60%	23.30%
Managed Medicare [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$ 4,133	$ 3,614	$ 3,279
Revenues from third party payers, Ratio									10.40%	9.80%	9.60%
Medicaid [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$ 1,705	$ 1,848	$ 1,480
Revenues from third party payers, Ratio									4.30%	5.00%	4.30%
Managed Medicaid [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$ 2,234	$ 1,923	$ 1,570
Revenues from third party payers, Ratio									5.60%	5.20%	4.60%
Managed Care and Other Insurers [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$ 21,882	$ 20,066	$ 18,654
Revenues from third party payers, Ratio									55.20%	54.40%	54.60%
International (Managed Care and Other Insurers) [Member]
Revenues From Third Party Payers [Line Items]
Revenues from third party payers									$ 1,295	$ 1,311	$ 1,175
Revenues from third party payers, Ratio									3.30%	3.60%	3.40%

Accounting Policies - Schedul43

Accounting Policies - Schedule of Revenue Deductions Related to Uninsured Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Regulatory Assets [Abstract]
Charity care	$ 3,682	$ 3,775	$ 3,497
Uninsured discounts	10,692	8,999	8,210
Provision for doubtful accounts	3,913	3,169	3,858
Total uncompensated care	$ 18,287	$ 15,943	$ 15,565
Charity care, ratio	20.00%	24.00%	22.00%
Uninsured discounts, ratio	59.00%	56.00%	53.00%
Provision for doubtful accounts, ratio	21.00%	20.00%	25.00%
Total uncompensated care, ratio	100.00%	100.00%	100.00%

Accounting Policies - Schedul44

Accounting Policies - Schedule of Estimated Cost of Uncompensated Care (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization)	$ 33,760	$ 31,478	$ 29,606
Cost-to-charges ratio (patient care costs as percentage of gross patient charges)	14.50%	15.50%	16.30%
Total uncompensated care	$ 18,287	$ 15,943	$ 15,565
Multiply by the cost-to-charges ratio	14.50%	15.50%	16.30%
Estimated cost of total uncompensated care	$ 2,652	$ 2,471	$ 2,537

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Apr. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Fair Value of Stock Options Granted	$ 26.10	$ 19.13	$ 16.68
Total Intrinsic Value of Stock Options	$ 544
Unrecognized Compensation Cost Related to Nonvested Awards	$ 87
Employee Stock Purchase Plan ("ESPP") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock were reserved for issuance	10,812,700			12,000,000
Compensation expense	$ 8	$ 2
Restricted Stock Units and Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost Related to Nonvested Awards	$ 342
Restricted Stock Units [Member] | 2006 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Stock Options	3,105,000	3,832,100
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Stock Options	1,746,300	3,445,000
Vested, Stock Options	15,291,000
Shares Available for Future Grants	25,386,000

Share-Based Compensation - Sche

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, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free interest rate	1.59%	1.96%	1.20%
Expected volatility	36.00%	37.00%	45.00%
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%

Share-Based Compensation - Sc47

Share-Based Compensation - Schedule of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options outstanding, Weighted Average Exercise Price, Beginning Balance	$ 21.39	$ 15.82	$ 11.56
Granted, Weighted Average Exercise Price	69.16	48.56	37.49
Exercised, Weighted Average Exercise Price	12.77	9.15	8.49
Cancelled, Weighted Average Exercise Price	32.59	29.54	25.50
Stock Options outstanding, Weighted Average Exercise Price, Ending Balance	27.73	$ 21.39	$ 15.82
Options exercisable, Weighted Average Exercise Price	$ 18.74
Options outstanding, Weighted Average Remaining Contractual Term	5 years 3 months 18 days
Options exercisable, Weighted Average Remaining Contractual Term	4 years 2 months 12 days
Options outstanding, Aggregate Intrinsic Value	$ 950
Options exercisable, Aggregate Intrinsic Value	$ 780
Time Based Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Beginning Balance	15,051	16,809	19,191
Granted, Stock Options	1,746	1,723	2,432
Exercised, Stock Options	(4,093)	(3,322)	(4,498)
Cancelled, Stock Options	(539)	(159)	(316)
Stock Options Outstanding, Ending Balance	12,165	15,051	16,809
Stock Options Exercisable, Ending Balance	7,648
Performance Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Beginning Balance	14,744	18,377	22,051
Granted, Stock Options		1,722	2,432
Exercised, Stock Options	(3,988)	(5,234)	(5,843)
Cancelled, Stock Options	(329)	(121)	(263)
Stock Options Outstanding, Ending Balance	10,427	14,744	18,377
Stock Options Exercisable, Ending Balance	7,643
Total Stock Options and Stock SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Beginning Balance	29,795	35,186	41,242
Granted, Stock Options	1,746	3,445	4,864
Exercised, Stock Options	(8,081)	(8,556)	(10,341)
Cancelled, Stock Options	(868)	(280)	(579)
Stock Options Outstanding, Ending Balance	22,592	29,795	35,186
Stock Options Exercisable, Ending Balance	15,291

Share-Based Compensation - Sc48

Share-Based Compensation - Schedule of Restricted Stock Units Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restricted Stock Units and Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs and PSUs Outstanding, Beginning Balance	8,676	7,498	4,484
RSUs and PSUs, Granted	3,105	3,832	4,859
RSUs and PSUs, Vested	(2,881)	(2,115)	(1,183)
RSUs and PSUs, Cancelled	(487)	(539)	(662)
RSUs and PSUs Outstanding, Ending Balance	8,413	8,676	7,498
Weighted Average Grant Date Fair Value, RSUs and PSUs, Beginning balance	$ 39.89	$ 33.30	$ 27.03
Weighted Average Grant Date Fair Value, RSUs and PSUs, Granted	69.43	48.53	37.43
Weighted Average Grant Date Fair Value, RSUs and PSUs, Vested	37.61	32.56	27.30
Weighted Average Grant Date Fair Value, RSUs and PSUs, Cancelled	47.26	38.30	31.91
Weighted Average Grant Date Fair Value, RSUs and PSUs, Ending balance	$ 51.15	$ 39.89	$ 33.30
Restricted Stock Units and Performance Stock Units [Member] | Time Based Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs and PSUs Outstanding, Beginning Balance	5,895	5,099	3,074
RSUs and PSUs, Granted	1,694	2,603	3,305
RSUs and PSUs, Vested	(1,953)	(1,423)	(831)
RSUs and PSUs, Cancelled	(334)	(384)	(449)
RSUs and PSUs Outstanding, Ending Balance	5,302	5,895	5,099
Restricted Stock Units and Performance Stock Units [Member] | Performance Based Stock Options and RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs and PSUs Outstanding, Beginning Balance	2,781	2,399	1,410
RSUs and PSUs, Granted		1,229	1,554
RSUs and PSUs, Vested	(928)	(692)	(352)
RSUs and PSUs, Cancelled	(113)	(155)	(213)
RSUs and PSUs Outstanding, Ending Balance	1,740	2,781	2,399
Performance Shares PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs and PSUs, Granted	1,411
RSUs and PSUs, Cancelled	(40)
RSUs and PSUs Outstanding, Ending Balance	1,371

Acquisitions and Dispositions -

Acquisitions and Dispositions - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)Hospital	Dec. 31, 2014USD ($)Hospital	Dec. 31, 2013USD ($)Hospital
Business Acquisition [Line Items]
Number of hospitals acquired | Hospital	1	3	3
Proceeds from sale of business	$ 73	$ 51	$ 33
Hospitals [Member]
Business Acquisition [Line Items]
Cash paid for acquisition	15	161	146
Nonhospital Health Care [Member]
Business Acquisition [Line Items]
Cash paid for acquisition	336	605	335
Other [Member]
Business Acquisition [Line Items]
Fair value of identifiable net assets of acquired entities	323	542	253
Real Estate and Other Investments [Member]
Business Acquisition [Line Items]
Pretax gain (loss) on sales of business	5	29	(10)
Proceeds from sale of business	$ 73	$ 51	$ 33

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current, Federal	$ 1,259	$ 916	$ 827
Current, State	119	102	86
Current, Foreign	40	52	44
Deferred, Federal	(163)	3	(53)
Deferred, State	(27)	(5)	20
Deferred, Foreign	33	40	26
Provision for income taxes	$ 1,261	$ 1,108	$ 950

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Reductions in interest related to taxing authority examinations	$ 10	$ 9	$ 4
Reductions in interest related to taxing authority examinations, net of tax	7	6	3
Foreign pretax income	178	238	$ 187
State net operating loss carryforwards	144
Federal net operating loss carryforwards	105
Liability for unrecognized tax benefits	554	548
Unrecognized tax benefits, accrued interest	73	58
Unrecognized tax benefits that would impact effective tax rate	233	205
Deferred tax assets, reductions	$ 6	$ 13
State and Local Jurisdiction [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration date	2,018
State and Local Jurisdiction [Member] | Maximum [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards, expiration date	2,034

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation of Federal Statutory Rate to Effective Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	1.60%	2.30%	2.30%
Change in liability for uncertain tax positions	0.20%	0.50%	0.50%
Tax exempt interest income	(0.10%)	(0.10%)	(0.20%)
Other items, net	0.50%	(0.50%)	0.30%
Effective income tax rate on income applicable to HCA Holdings, Inc.	37.20%	37.20%	37.90%
Income attributable to noncontrolling interests from consolidated partnerships	(5.30%)	(5.40%)	(5.70%)
Effective income tax rate on income before income taxes	31.90%	31.80%	32.20%

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Depreciation and fixed asset basis differences, Assets	$ 0	$ 0
Allowances for professional liability and other risks, Assets	443	403
Accounts receivable, Assets	363	341
Compensation, Assets	334	272
Other, Assets	845	756
Deferred tax assets	1,985	1,772
Depreciation and fixed asset basis differences, Liabilities	222	226
Allowances for professional liability and other risks, Liabilities	0	0
Accounts receivable, Liabilities	0	0
Compensation, Liabilities	0	0
Other, Liabilities	820	745
Deferred tax liabilities	$ 1,042	$ 971

Income Taxes - Schedule of Acti

Income Taxes - Schedule of Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Beginning Balance	$ 503	$ 445
Additions based on tax positions related to the current year	13	3
Additions for tax positions of prior years	22	72
Reductions for tax positions of prior years	(45)	(11)
Settlements		(1)
Lapse of applicable statutes of limitations	(6)	(5)
Ending Balance	$ 487	$ 503

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Common stock repurchased	31,991,200	28,583,200	10,656,400

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Computations of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income attributable to HCA Holdings, Inc.	$ 582	$ 449	$ 507	$ 591	$ 527	$ 518	$ 483	$ 347	$ 2,129	$ 1,875	$ 1,556
Weighted average common shares outstanding									414,193	435,668	445,066
Effect of dilutive incremental shares									12,528	14,684	16,847
Shares used for diluted earnings per share									426,721	450,352	461,913
Basic earnings per share	$ 1.44	$ 1.08	$ 1.22	$ 1.41	$ 1.22	$ 1.20	$ 1.10	$ 0.78	$ 5.14	$ 4.30	$ 3.50
Diluted earnings per share	$ 1.40	$ 1.05	$ 1.18	$ 1.36	$ 1.19	$ 1.16	$ 1.07	$ 0.76	$ 4.99	$ 4.16	$ 3.37

Investments of Insurance Subs57

Investments of Insurance Subsidiaries - Schedule of Investments (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	$ 462	$ 539
Unrealized Amounts, Gains	21	20
Unrealized Amounts, Losses	(1)	(1)
Fair Value	482	558
Amounts classified as current assets	(50)	(64)
Investment carrying value	432	494
Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	462	538
Unrealized Amounts, Gains	17	18
Unrealized Amounts, Losses	(1)	(1)
Fair Value	478	555
Debt Securities [Member] | States and Municipalities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	428	477
Unrealized Amounts, Gains	17	18
Unrealized Amounts, Losses	(1)	(1)
Fair Value	444	494
Debt Securities [Member] | Money Market Funds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	34	61
Fair Value	34	61
Equity Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost		1
Unrealized Amounts, Gains	4	2
Fair Value	$ 4	$ 3

Investments of Insurance Subs58

Investments of Insurance Subsidiaries - Schedule of Maturities of Investments (Detail) $ in Millions	Dec. 31, 2015USD ($)
Amortized Cost and Fair Value Debt Securities [Abstract]
Due in one year or less, Amortized Cost	$ 94
Due after one year through five years, Amortized Cost	162
Due after five years through ten years, Amortized Cost	125
Due after ten years, Amortized Cost	81
Amortized Cost, Total	462
Due in one year or less, Fair Value	94
Due after one year through five years, Fair Value	166
Due after five years through ten years, Fair Value	133
Due after ten years, Fair Value	85
Fair Value, Total	$ 478

Investments of Insurance Subs59

Investments of Insurance Subsidiaries - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2015
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 4 months 24 days

Financial Instruments - Schedul

Financial Instruments - Schedule of Interest Rate Swap Agreements Designated as Cash Flow Hedges (Detail) - Pay-Fixed Interest Rate Swaps [Member]	12 Months Ended
	Dec. 31, 2015USD ($)
Maturity Date, 2016 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$ 3,000,000,000
Fair Value	$ (85,000,000)
Maturity Date	Dec. 31, 2016
Maturity Date, 2017 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$ 1,000,000,000
Fair Value	$ (25,000,000)
Maturity Date	Dec. 31, 2017

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)
Offsetting [Abstract]
Estimated amount reclassified from other comprehensive income to interest expense	$ 101
Estimated termination value if there is breach of provision related to derivative agreement	$ 112

Financial Instruments - Effect

Financial Instruments - Effect of Interest Rate Swaps on Results of Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	$ 1,665	$ 1,743	$ 1,848
Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in OCI on Derivatives, Net of Tax	22
Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	$ 125

Assets and Liabilities Measur63

Assets and Liabilities Measured at Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	$ 482	$ 558
Less amounts classified as current assets	(50)	(64)
Investments of insurance subsidiaries, noncurrent	432	494
Interest Rate Swaps [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Fair Value	110	199
Debt Securities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	478	555
Debt Securities [Member] | States and Municipalities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	444	494
Debt Securities [Member] | Money Market Funds [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	34	61
Equity Securities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	4	3
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	38	64
Less amounts classified as current assets	(34)	(61)
Investments of insurance subsidiaries, noncurrent	4	3
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Debt Securities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	34	61
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Debt Securities [Member] | Money Market Funds [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	34	61
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Equity Securities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	4	3
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	438	488
Less amounts classified as current assets	(16)	(3)
Investments of insurance subsidiaries, noncurrent	422	485
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swaps [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Fair Value	110	199
Significant Other Observable Inputs (Level 2) [Member] | Debt Securities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	438	488
Significant Other Observable Inputs (Level 2) [Member] | Debt Securities [Member] | States and Municipalities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	438	488
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	6	6
Investments of insurance subsidiaries, noncurrent	6	6
Significant Unobservable Inputs (Level 3) [Member] | Debt Securities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	6	6
Significant Unobservable Inputs (Level 3) [Member] | Debt Securities [Member] | States and Municipalities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value	$ 6	$ 6

Assets and Liabilities Measur64

Assets and Liabilities Measured at Fair Value - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Estimated fair value of long-term debt	$ 31,411	$ 30,861
Carrying amounts of long-term debt	$ 30,655	$ 29,645

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Term loans	$ 5,639	$ 5,517
Senior secured debt	20,403	20,070
Net debt issuance costs	(167)	(219)
Total debt (average life of 6.2 years, rates averaging 5.4%)	30,488	29,426
Less amounts due within one year	233	338
Long-term debt	30,255	29,088
Senior Secured Asset-Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term line of credit	3,030	2,880
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured debt	11,100	11,100
Other Senior Secured Debt [Member]
Debt Instrument [Line Items]
Other senior secured debt	634	573
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Senior unsecured notes	$ 10,252	$ 9,575

Long-Term Debt - Schedule of 66

Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2015
Debt Instrument [Line Items]
Effective interest rate	5.00%
Total debt average term	6 years 2 months 12 days
Total debt average rate	5.40%
Senior Secured Asset-Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Effective interest rate	1.80%
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	5.80%
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	6.50%

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	Nov. 30, 2015	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	May. 31, 2015	Jan. 31, 2015	Nov. 30, 2014	Oct. 31, 2014	Apr. 30, 2014	Dec. 31, 2012	Nov. 30, 2010
Debt Instrument [Line Items]
Pretax loss on retirement of debt		$ 7,000,000	$ 79,000,000	$ 68,000,000	$ 143,000,000		$ 135,000,000	$ 335,000,000	$ 17,000,000
Debt instrument, repayment amount							4,920,000,000	$ 5,164,000,000	$ 1,662,000,000
Capital leases and other secured debt		634,000,000					634,000,000
Maturity of long-term debt in 2017		2,145,000,000					2,145,000,000
Maturity of long-term debt in 2018		2,918,000,000					2,918,000,000
Maturity of long-term debt in 2019		2,227,000,000					2,227,000,000
Maturity of long-term debt in 2020		4,125,000,000					4,125,000,000
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%
Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2,017
Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2,020
Asset-Based Revolving Credit Facility Maturing on March 7, 2019 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date							Mar. 7, 2019
Long-term line of credit		$ 3,250,000,000					$ 3,250,000,000
Percentage of senior secured credit facility over eligible accounts receivable		85.00%					85.00%
Line of credit outstanding		$ 3,030,000,000					$ 3,030,000,000
Senior Secured Revolving Credit Facility Maturing On February 26, 2019 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date							Feb. 26, 2019
Long-term line of credit		2,000,000,000					$ 2,000,000,000
Line of credit outstanding		0					$ 0
Senior Secured Term Loan A-5 Facility Maturing On June 10, 2020 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date							Jun. 10, 2020
Long-term line of credit		1,365,000,000					$ 1,365,000,000
Senior Secured Term Loan B-4 Facility Maturing on May 1, 2018 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date							May 1, 2018
Long-term line of credit		2,319,000,000					$ 2,319,000,000
Senior Secured Term Loan B-5 Facility Maturing on March 31, 2017 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date							Mar. 31, 2017
Long-term line of credit		1,955,000,000					$ 1,955,000,000
Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 1,500,000,000					$ 1,500,000,000
Debt instrument, stated interest		3.75%					3.75%
Senior Secured First Lien Notes Due 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 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 2,000,000,000					$ 2,000,000,000
Debt instrument, stated interest		5.00%					5.00%
Senior Secured First Lien Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 1,350,000,000					$ 1,350,000,000
Debt instrument, stated interest		5.875%					5.875%
Senior Secured First Lien 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%
4.25% First Lien Notes Due 2019 [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 First Lien 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%
Senior Unsecured Notes Maturities Ranging 2018 to 2033 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 8,391,000,000					$ 8,391,000,000
Senior Unsecured Notes Maturities Ranging 2018 to 2033 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2,018
Senior Unsecured Notes Maturities Ranging 2018 to 2033 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2,033
Senior Unsecured Notes Maturity Year 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		125,000,000					$ 125,000,000
Senior Unsecured Notes Maturities Ranging 2023 to 2095 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		736,000,000					$ 736,000,000
Senior Unsecured Notes Maturities Ranging 2023 to 2095 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2,023
Senior Unsecured Notes Maturities Ranging 2023 to 2095 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, maturities range							2,095
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 Notes [Member] | Senior Secured Term Loan Facility Maturing on June 10, 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			$ 1,400,000,000
Pretax loss on retirement of debt							$ 3,000,000
Debt instrument maturity date							Jun. 10, 2020
Senior Notes [Member] | Senior Secured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount										$ 1,600,000,000	$ 1,000,000,000		$ 1,400,000,000
Debt instrument, stated interest										5.375%	5.375%		5.25%
Senior Notes [Member] | Senior Secured Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount										$ 1,525,000,000
Debt instrument, stated interest										7.75%
Pretax loss on retirement of debt							$ 122,000,000
Senior Notes [Member] | Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount						$ 1,500,000,000							$ 600,000,000
Debt instrument, stated interest						3.75%							4.25%	8.50%
Redemption of aggregate principal amount														$ 1,500,000,000
Senior Notes [Member] | Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount						$ 2,000,000,000
Debt instrument, stated interest						5.00%
Pretax loss on retirement of debt							226,000,000
Senior Notes [Member] | Senior Unsecured Notes Due 2014 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest						5.75%
Debt instrument, repayment amount						$ 500,000,000
Senior Notes [Member] | Senior Unsecured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount											$ 750,000,000
Debt instrument, stated interest											6.375%
Senior Notes [Member] | Senior Secured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount	$ 1,000,000,000	$ 500,000,000					$ 500,000,000
Debt instrument, stated interest		5.875%					5.875%
Pretax loss on retirement of debt	$ 10,000,000
Senior Notes [Member] | Senior Secured Notes Due 2016 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest	6.50%
Redemption of aggregate principal amount	$ 1,000,000,000
Senior Notes [Member] | Senior Secured Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest												7.25%		7.875%
Pretax loss on retirement of debt							$ 109,000,000
Redemption of aggregate principal amount												$ 1,400,000,000		$ 1,250,000,000

Contingencies and Legal Claim68

Contingencies and Legal Claim Costs - Additional Information (Detail) $ in Thousands

Dec. 17, 2015USD ($)

Dec. 09, 2015USD ($)

Nov. 03, 2015USD ($)

Feb. 09, 2015USD ($)

Apr. 25, 2014USD ($)

Jan. 24, 2013USD ($)

Oct. 28, 2011Cases

Dec. 31, 2015USD ($)

Mar. 31, 2014USD ($)

Dec. 31, 2012USD ($)

Dec. 31, 2015USD ($)

Dec. 31, 2014USD ($)

Jul. 31, 2012Hospital

Oct. 31, 2009USD ($)

Loss Contingencies [Line Items]

Payment for legal settlements

$ 2,625

$ 215,000

Number of claims filed | Cases

3

Insurance claim receivables

19,000

Attorney's fees

$ 5,500

Legal claim costs

$ 434,000

$ 120,000

$ 78,000

$ 175,000

$ 249,000

$ 78,000

Capital commitment in connection with purchase of hospitals

$ 450,000

Additional shortfall related to capital expenditures

$ 78,000

Period of agreed capital commitments

5 years

Number of year under court-supervisor accounting for expenditures following the purchase

10 years

Percentage of legal claim costs

9.00%

Dispute settlement amount

$ 15,000

Accrued Liability

$ 438,000

$ 438,000

Health Care Foundation of Greater Kansas City [Member] | Pending Litigation [Member]

Loss Contingencies [Line Items]

Judgment award by the court

$ 162,000

Plaintiff attorneys fees award

$ 12,000

Percentage of legal claim costs

9.00%

9.00%

Florida [Member]

Loss Contingencies [Line Items]

Number of owned and operated hospitals reviewed | Hospital

8

Florida [Member] | Qui Tam Action [Member]

Loss Contingencies [Line Items]

Number of owned and operated hospitals reviewed | Hospital

2

Leases - Schedule of Commitment

Leases - Schedule of Commitments Relating to Noncancellable Operating Leases (Detail) $ in Millions	Dec. 31, 2015USD ($)
Leases [Abstract]
2,016	$ 283
2,017	267
2,018	216
2,019	182
2,020	149
Thereafter	976
Operating leases future minimum payments due, gross	2,073
Less sublease income	(18)
Commitments relating to noncancellable operating leases	$ 2,055

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail)	1 Months Ended			3 Months Ended	12 Months Ended
	Dec. 31, 2014$ / sharesshares	May. 31, 2014USD ($)$ / sharesshares	Nov. 30, 2013USD ($)$ / sharesshares	Dec. 31, 2014$ / sharesshares	Dec. 31, 2015USD ($)$ / sharesDirectorsshares	Dec. 31, 2014shares	Dec. 31, 2013shares	Oct. 31, 2015USD ($)	May. 31, 2015USD ($)	Apr. 30, 2015shares	Feb. 28, 2015USD ($)	Oct. 31, 2014USD ($)
Capital Stock [Line Items]
Common stock, shares authorized	1,800,000,000			1,800,000,000	1,800,000,000	1,800,000,000
Share repurchase Program authorized amount | $								$ 3,000,000,000	$ 1,000,000,000		$ 1,000,000,000
Repurchase of common stock, shares	14,028,600			14,028,600	31,991,200	14,028,600
Repurchase price of common stock, per share | $ / shares				$ 71.29	$ 74.62
Repurchase of common stock, shares					31,991,200	28,583,200	10,656,400
Stock repurchase program, authorized per share | $ / shares					$ 74.93
Share Repurchase Transaction, May 2015 [Member]
Capital Stock [Line Items]
Stock repurchase program, remaining authorized repurchase amount | $					$ 0
Share Repurchase Transaction, February, 2015 [Member]
Capital Stock [Line Items]
Stock repurchase program, remaining authorized repurchase amount | $					0
Share Repurchase Transaction, October, 2015 [Member]
Capital Stock [Line Items]
Stock repurchase program, remaining authorized repurchase amount | $					$ 2,603,000,000
Minimum [Member]
Capital Stock [Line Items]
Number of directors as per the amended and restated by-laws | Directors					3
Underwritten Secondary Offering [Member]
Capital Stock [Line Items]
Repurchase price of common stock, per share | $ / shares		$ 51.53	$ 46.92
Repurchase of common stock, shares			30,000,000
Additional shares repurchased		14,554,600	10,656,400
Additional shares amount repurchased | $		$ 750,000,000	$ 500,000,000
The Bain Entities [Member]
Capital Stock [Line Items]
Share repurchase Program authorized amount | $												$ 1,000,000,000
Repurchase of common stock, shares	7,612,900			7,612,900		7,612,900				3,806,500
Percentage of discount on share repurchase	1.00%				1.00%
Repurchase price of common stock, per share | $ / shares	$ 73.26				$ 77.26
Additional shares repurchased				6,415,700
Purchase price of common stock, per share | $ / shares				$ 68.96
The Bain Entities [Member] | Underwritten Secondary Offering [Member]
Capital Stock [Line Items]
Repurchase of common stock, shares		15,000,000

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
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	$ 31	$ 29
Noncontributory and nonqualified plan, accrued benefits liabilities	164	156
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan cost	33	31	43
Defined benefit plan obligation	$ 207	231
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%
Cost of defined benefit plans	$ 432	404	374
Defined benefit plan cost	25	13	$ 37
Defined benefit plan obligation	$ 131	$ 172
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%
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 Inform72

Segment and Geographic Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2015Hospital
Segment Reporting Information [Line Items]
Number of geographically organized groups	2
Number of owned and operated hospitals	168
Reorganization Group [Member] | National Group [Member]
Segment Reporting Information [Line Items]
Number of owned and operated hospitals	84
Reorganization Group [Member] | American Group [Member]
Segment Reporting Information [Line Items]
Number of owned and operated hospitals	78
Reorganization Group [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Number of owned and operated hospitals	6

Segment and Geographic Inform73

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 ($) $ in Millions	Dec. 09, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2012	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues		$ 10,249	$ 9,856	$ 9,897	$ 9,676	$ 9,636	$ 9,220	$ 9,230	$ 8,832		$ 39,678	$ 36,918	$ 34,182
Equity in earnings of affiliates											46	43	29
Adjusted segment EBITDA											7,915	7,428	6,574
Depreciation and amortization											1,904	1,820	1,753
Interest expense											1,665	1,743	1,848
Losses (gains) on sales of facilities		4	$ 2	3	(6)	7	$ 9	(7)	(13)		5	(29)	10
Losses on retirement of debt		7		$ 79		68		$ 143			135	335	17
Legal claim costs	$ 434	120							78	$ 175	249	78
Income before income taxes											3,957	3,481	2,946
Assets		32,744				30,980					32,744	30,980	28,594
Goodwill and other intangible assets, Beginning Balance					6,416				5,903		6,416	5,903	5,539
Goodwill and other intangible assets, Acquisitions											345	548	378
Goodwill and other intangible assets, Foreign currency translation and other											(30)	(35)	(14)
Goodwill and other intangible assets, Ending Balance		6,731				6,416				5,539	6,731	6,416	5,903
National Group [Member]
Segment Reporting Information [Line Items]
Revenues											18,756	17,335	15,975
Equity in earnings of affiliates											(7)	(15)	(9)
Adjusted segment EBITDA											4,271	3,848	3,303
Depreciation and amortization											769	749	718
Assets		11,332				10,590					11,332	10,590	10,208
Goodwill and other intangible assets, Beginning Balance					1,170				1,104		1,170	1,104	1,035
Goodwill and other intangible assets, Acquisitions											318	72	68
Goodwill and other intangible assets, Foreign currency translation and other											(7)	(6)	1
Goodwill and other intangible assets, Ending Balance		1,481				1,170				1,035	1,481	1,170	1,104
American Group [Member]
Segment Reporting Information [Line Items]
Revenues											18,872	17,532	16,487
Equity in earnings of affiliates											(32)	(31)	(24)
Adjusted segment EBITDA											4,207	4,025	3,662
Depreciation and amortization											886	840	835
Assets		15,240				15,091					15,240	15,091	13,911
Goodwill and other intangible assets, Beginning Balance					4,614				4,190		4,614	4,190	4,189
Goodwill and other intangible assets, Acquisitions											27	428	13
Goodwill and other intangible assets, Foreign currency translation and other											(3)	(4)	(12)
Goodwill and other intangible assets, Ending Balance		4,638				4,614				4,189	4,638	4,614	4,190
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues											2,050	2,051	1,720
Equity in earnings of affiliates											(7)	3	4
Adjusted segment EBITDA											(563)	(445)	(391)
Depreciation and amortization											249	231	200
Assets		6,172				5,299					6,172	5,299	4,475
Goodwill and other intangible assets, Beginning Balance					$ 632				$ 609		632	609	315
Goodwill and other intangible assets, Acquisitions												48	297
Goodwill and other intangible assets, Foreign currency translation and other											(20)	(25)	(3)
Goodwill and other intangible assets, Ending Balance		$ 612				$ 632				$ 315	$ 612	$ 632	$ 609

Other Comprehensive Loss - Comp

Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Unrealized gains on available-for-sale securities, beginning balances	$ 13	$ 7	$ 11
Unrealized gains (losses) on available-for-sale securities, net of income taxes		6	(4)
Unrealized gains on available-for-sale securities, ending balances		13	7
Foreign currency translation adjustments, beginning balances	(36)	11	(1)
Foreign currency translation adjustments	(38)	(47)	12
Foreign currency translation adjustments, ending balances	(74)	(36)	11
Defined benefit plans, beginning balances	(174)	(88)	(196)
Defined benefit plans	19	(99)	84
Defined benefit plans, (income) expense reclassified into operations from other comprehensive income	20	13	24
Defined benefit plans, ending balances	(135)	(174)	(88)
Change in fair value of derivative instruments, beginning balances	(126)	(187)	(271)
Change in fair value of derivative instruments	(22)	(23)	2
Change in fair value of derivatives instruments, (income) expense reclassified into operations from other comprehensive income	79	84	82
Change in fair value of derivative instruments, ending balances	(69)	(126)	(187)
Accumulated other comprehensive income (loss), net of tax, beginning balances	(323)	(257)	(457)
Unrealized gains (losses) on available-for-sale securities, net of income taxes		6	(4)
Foreign currency translation adjustments	(38)	(47)	12
Defined benefit plans	19	(99)	84
Change in fair value of derivative instruments, net of income tax benefit	(22)	(23)	2
Expense reclassified into operations from other comprehensive income, Total	99	97	106
Accumulated other comprehensive income (loss), net of tax, ending balances	$ (265)	$ (323)	$ (257)

Other Comprehensive Loss - Co75

Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Unrealized gains (losses) on available-for-sale securities, tax portion	$ 1	$ 3	$ (3)
Foreign currency translation adjustments, income (taxes)	25	27	6
Defined benefit plans, income tax benefit	11	59	50
Change in fair value of derivative instruments, income tax benefit	14	13	1
Defined benefit plans, Expense reclassified into operations from other comprehensive income, Income tax benefits	12	8	14
Change in fair value of derivative instruments, Expense reclassified into operations from other comprehensive income, Income tax benefits	$ 46	$ 48	$ 49

Accrued Expenses and Allowanc76

Accrued Expenses and Allowance for Doubtful Accounts - Summary of Other Accrued Expenses (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Professional liability risks	$ 350	$ 329
Interest	365	357
Taxes other than income	277	255
Other	888	796
Other accrued expenses	$ 1,880	$ 1,737

Accrued Expenses and Allowanc77

Accrued Expenses and Allowance for Doubtful Accounts - Summary of Allowance of Doubtful Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Balance at Beginning of Year	$ 5,011	$ 5,488	$ 4,846
Provision for Doubtful Accounts	3,913	3,169	3,858
Accounts Written off, Net of Recoveries	(3,598)	(3,646)	(3,216)
Balance at End of Year	$ 5,326	$ 5,011	$ 5,488

Supplemental Condensed Consol78

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2012	Nov. 30, 2010
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 Consol79

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Condensed Consolidating Comprehensive Income Statement (Detail) - USD ($) $ in Millions	Dec. 09, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2012	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Supplemental Condensed Consolidating Financial Information [Line Items]
Revenues before provision for doubtful accounts											$ 43,591	$ 40,087	$ 38,040
Provision for doubtful accounts											3,913	3,169	3,858
Revenues		$ 10,249	$ 9,856	$ 9,897	$ 9,676	$ 9,636	$ 9,220	$ 9,230	$ 8,832		39,678	36,918	34,182
Salaries and benefits											18,115	16,641	15,646
Supplies											6,638	6,262	5,970
Other operating expenses											7,103	6,755	6,237
Electronic health record incentive income											(47)	(125)	(216)
Equity in earnings of affiliates											(46)	(43)	(29)
Depreciation and amortization											1,904	1,820	1,753
Interest expense (revenue)											1,665	1,743	1,848
Losses (gains) on sales of facilities		4	2	3	(6)	7	9	(7)	(13)		5	(29)	10
Losses on retirement of debt		7		79		68		143			135	335	17
Legal claim costs	$ 434	120							78	$ 175	249	78
Total expenses including equity in earnings of affiliates											35,721	33,437	31,236
Income (loss) before income taxes											3,957	3,481	2,946
Provision (benefit) for income taxes											1,261	1,108	950
Net income (loss)		738	573	665	720	676	611	632	454		2,696	2,373	1,996
Net income attributable to noncontrolling interests											567	498	440
Net income (loss) attributable to HCA Holdings, Inc.		$ 582	$ 449	$ 507	$ 591	$ 527	$ 518	$ 483	$ 347		2,129	1,875	1,556
Comprehensive income (loss) attributable to HCA Holdings, Inc.											2,187	1,809	1,756
HCA Holdings, Inc. Issuer [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Other operating expenses											(2)	20	8
Equity in earnings of affiliates											(2,352)	(2,003)	(1,675)
Interest expense (revenue)											115	184	184
Losses on retirement of debt											122
Legal claim costs											120
Total expenses including equity in earnings of affiliates											(1,997)	(1,799)	(1,483)
Income (loss) before income taxes											1,997	1,799	1,483
Provision (benefit) for income taxes											(132)	(76)	(73)
Net income (loss)											2,129	1,875	1,556
Net income (loss) attributable to HCA Holdings, Inc.											2,129	1,875	1,556
Comprehensive income (loss) attributable to HCA Holdings, Inc.											2,187	1,809	1,756
HCA Inc. Issuer [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Other operating expenses													(2)
Interest expense (revenue)											2,445	2,175	2,253
Losses on retirement of debt											13	335	17
Legal claim costs											129	78
Total expenses including equity in earnings of affiliates											2,587	2,588	2,268
Income (loss) before income taxes											(2,587)	(2,588)	(2,268)
Provision (benefit) for income taxes											(962)	(961)	(860)
Net income (loss)											(1,625)	(1,627)	(1,408)
Net income (loss) attributable to HCA Holdings, Inc.											(1,625)	(1,627)	(1,408)
Comprehensive income (loss) attributable to HCA Holdings, Inc.											(1,568)	(1,566)	(1,324)
Subsidiary Guarantors [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Revenues before provision for doubtful accounts											22,272	20,533	20,042
Provision for doubtful accounts											2,099	1,777	2,262
Revenues											20,173	18,756	17,780
Salaries and benefits											9,131	8,574	8,387
Supplies											3,464	3,280	3,158
Other operating expenses											3,324	3,138	2,998
Electronic health record incentive income											(31)	(85)	(142)
Equity in earnings of affiliates											(6)	(7)	(2)
Depreciation and amortization											915	888	855
Interest expense (revenue)											(766)	(559)	(523)
Losses (gains) on sales of facilities											(2)	(25)	20
Management fee revenue											(676)	(662)	(632)
Total expenses including equity in earnings of affiliates											15,353	14,542	14,119
Income (loss) before income taxes											4,820	4,214	3,661
Provision (benefit) for income taxes											1,758	1,533	1,362
Net income (loss)											3,062	2,681	2,299
Net income attributable to noncontrolling interests											92	87	69
Net income (loss) attributable to HCA Holdings, Inc.											2,970	2,594	2,230
Comprehensive income (loss) attributable to HCA Holdings, Inc.											3,009	2,508	2,338
Subsidiary Non-Guarantors [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Revenues before provision for doubtful accounts											21,319	19,554	17,998
Provision for doubtful accounts											1,814	1,392	1,596
Revenues											19,505	18,162	16,402
Salaries and benefits											8,984	8,067	7,259
Supplies											3,174	2,982	2,812
Other operating expenses											3,781	3,597	3,233
Electronic health record incentive income											(16)	(40)	(74)
Equity in earnings of affiliates											(40)	(36)	(27)
Depreciation and amortization											989	932	898
Interest expense (revenue)											(129)	(57)	(66)
Losses (gains) on sales of facilities											7	(4)	(10)
Management fee expense											676	662	632
Total expenses including equity in earnings of affiliates											17,426	16,103	14,657
Income (loss) before income taxes											2,079	2,059	1,745
Provision (benefit) for income taxes											597	612	521
Net income (loss)											1,482	1,447	1,224
Net income attributable to noncontrolling interests											475	411	371
Net income (loss) attributable to HCA Holdings, Inc.											1,007	1,036	853
Comprehensive income (loss) attributable to HCA Holdings, Inc.											969	995	861
Eliminations [Member]
Supplemental Condensed Consolidating Financial Information [Line Items]
Equity in earnings of affiliates											2,352	2,003	1,675
Total expenses including equity in earnings of affiliates											2,352	2,003	1,675
Income (loss) before income taxes											(2,352)	(2,003)	(1,675)
Net income (loss)											(2,352)	(2,003)	(1,675)
Net income (loss) attributable to HCA Holdings, Inc.											(2,352)	(2,003)	(1,675)
Comprehensive income (loss) attributable to HCA Holdings, Inc.											$ (2,410)	$ (1,937)	$ (1,875)

Supplemental Condensed Consol80

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 741	$ 566	$ 414	$ 705
Accounts receivable, net	5,889	5,694
Inventories	1,439	1,279
Deferred income taxes		366
Other	1,163	1,025
Total current assets	9,232	8,930
Property and equipment, net	15,014	14,355
Investments of insurance subsidiaries	432	494
Investments in and advances to affiliates	178	165
Goodwill and other intangible assets	6,731	6,416	5,903	5,539
Other	1,157	620
Total assets	32,744	30,980	28,594
Current liabilities:
Accounts payable	2,170	2,035
Accrued salaries	1,233	1,370
Other accrued expenses	1,880	1,737
Long-term debt due within one year	233	338
Total current liabilities	5,516	5,480
Long-term debt, net	30,255	29,088
Professional liability risks	1,115	1,078
Income taxes and other liabilities	1,904	1,832
Total liabilities	38,790	37,478
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	(7,599)	(7,894)
Noncontrolling interests	1,553	1,396
Total stockholders' deficit	(6,046)	(6,498)	(6,928)	(8,341)
Total liabilities and stockholders' deficit	32,744	30,980
HCA Holdings, Inc. Issuer [Member]
Current assets:
Cash and cash equivalents				22
Deferred income taxes		366
Other	223	118
Total current assets	223	484
Investments in and advances to affiliates	24,380	21,970
Other	943	435
Total assets	25,546	22,889
Current liabilities:
Accounts payable	2	1
Other accrued expenses	172	45
Total current liabilities	174	46
Long-term debt, net	984	2,499
Intercompany balances	31,432	27,685
Income taxes and other liabilities	555	553
Total liabilities	33,145	30,783
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	(7,599)	(7,894)
Total stockholders' deficit	(7,599)	(7,894)
Total liabilities and stockholders' deficit	25,546	22,889
HCA Inc. Issuer [Member]
Current liabilities:
Other accrued expenses	340	317
Long-term debt due within one year	114	231
Total current liabilities	454	548
Long-term debt, net	28,756	26,124
Intercompany balances	(11,171)	(10,141)
Income taxes and other liabilities	548	487
Total liabilities	18,587	17,018
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	(18,587)	(17,018)
Total stockholders' deficit	(18,587)	(17,018)
Subsidiary Guarantors [Member]
Current assets:
Cash and cash equivalents	155	87	112	383
Accounts receivable, net	2,982	2,812
Inventories	852	756
Other	403	376
Total current assets	4,392	4,031
Property and equipment, net	8,328	7,871
Investments in and advances to affiliates	14	16
Goodwill and other intangible assets	1,703	1,705
Other	19	27
Total assets	14,456	13,650
Current liabilities:
Accounts payable	1,375	1,272
Accrued salaries	712	783
Other accrued expenses	458	517
Long-term debt due within one year	65	56
Total current liabilities	2,610	2,628
Long-term debt, net	226	185
Intercompany balances	(23,435)	(21,405)
Income taxes and other liabilities	417	605
Total liabilities	(20,182)	(17,987)
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	34,510	31,516
Noncontrolling interests	128	121
Total stockholders' deficit	34,638	31,637
Total liabilities and stockholders' deficit	14,456	13,650
Subsidiary Non-Guarantors [Member]
Current assets:
Cash and cash equivalents	586	479	$ 302	$ 300
Accounts receivable, net	2,907	2,882
Inventories	587	523
Other	537	531
Total current assets	4,617	4,415
Property and equipment, net	6,686	6,484
Investments of insurance subsidiaries	432	494
Investments in and advances to affiliates	164	149
Goodwill and other intangible assets	5,028	4,711
Other	195	158
Total assets	17,122	16,411
Current liabilities:
Accounts payable	793	762
Accrued salaries	521	587
Other accrued expenses	910	858
Long-term debt due within one year	54	51
Total current liabilities	2,278	2,258
Long-term debt, net	289	280
Intercompany balances	3,174	3,861
Professional liability risks	1,115	1,078
Income taxes and other liabilities	384	187
Total liabilities	7,240	7,664
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	8,457	7,472
Noncontrolling interests	1,425	1,275
Total stockholders' deficit	9,882	8,747
Total liabilities and stockholders' deficit	17,122	16,411
Eliminations [Member]
Current assets:
Investments in and advances to affiliates	(24,380)	(21,970)
Total assets	(24,380)	(21,970)
Current liabilities:
Stockholders' (deficit) equity attributable to HCA Holdings, Inc.	(24,380)	(21,970)
Total stockholders' deficit	(24,380)	(21,970)
Total liabilities and stockholders' deficit	$ (24,380)	$ (21,970)

Supplemental Condensed Consol81

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Condensed Consolidating Statement of Cash Flows (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 738	$ 573	$ 665	$ 720	$ 676	$ 611	$ 632	$ 454	$ 2,696	$ 2,373	$ 1,996
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities									(4,236)	(3,433)	(4,272)
Provision for doubtful accounts									3,913	3,169	3,858
Depreciation and amortization									1,904	1,820	1,753
Income taxes									(160)	(83)	143
Gains on sales of facilities	4	$ 2	3	(6)	7	$ 9	(7)	(13)	5	(29)	10
Losses on retirement of debt	7		$ 79		68		$ 143		135	335	17
Legal claim costs									149	78
Amortization of debt issuance costs									35	42	55
Share-based compensation									239	163	113
Other									54	13	7
Net cash provided by operating activities									4,734	4,448	3,680
Cash flows from investing activities:
Purchase of property and equipment									(2,375)	(2,176)	(1,943)
Acquisition of hospitals and health care entities									(351)	(766)	(481)
Disposal of hospitals and health care entities									73	51	33
Change in investments									63	(37)	36
Other									7	10	9
Net cash used in investing activities									(2,583)	(2,918)	(2,346)
Cash flows from financing activities:
Issuance of long-term debt									5,548	5,502
Net change in revolving bank credit facilities									150	440	970
Repayment of long-term debt									(4,920)	(5,164)	(1,662)
Distributions to noncontrolling interests									(495)	(442)	(435)
Payment of debt issuance costs									(50)	(73)	(5)
Repurchases of common stock									(2,397)	(1,750)	(500)
Income tax benefits									235	134	113
Other									(47)	(25)	(106)
Net cash used in financing activities									(1,976)	(1,378)	(1,625)
Change in cash and cash equivalents									175	152	(291)
Cash and cash equivalents at beginning of period				566				414	566	414	705
Cash and cash equivalents at end of period	741				566				741	566	414
Eliminations [Member]
Cash flows from operating activities:
Net income (loss)									(2,352)	(2,003)	(1,675)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Equity in earnings of affiliates									2,352	2,003	1,675
HCA Holdings, Inc. Issuer [Member]
Cash flows from operating activities:
Net income (loss)									2,129	1,875	1,556
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities									(12)	(11)	(11)
Income taxes									(160)	(83)	143
Losses on retirement of debt									122
Legal claim costs									20
Amortization of debt issuance costs									3	3	3
Share-based compensation									239	163	113
Equity in earnings of affiliates									(2,352)	(2,003)	(1,675)
Other									66
Net cash provided by operating activities									55	(56)	129
Cash flows from financing activities:
Repayment of long-term debt									(1,632)
Repurchases of common stock									(2,397)	(1,750)	(500)
Income tax benefits									235	134	113
Changes in intercompany balances with affiliates, net									3,767	1,678	342
Other									(28)	(6)	(106)
Net cash used in financing activities									(55)	56	(151)
Change in cash and cash equivalents											(22)
Cash and cash equivalents at beginning of period											22
HCA Inc. Issuer [Member]
Cash flows from operating activities:
Net income (loss)									(1,625)	(1,627)	(1,408)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities									44	(12)	17
Losses on retirement of debt									13	335	17
Legal claim costs									129	78
Amortization of debt issuance costs									32	39	52
Other									3	18	9
Net cash provided by operating activities									(1,404)	(1,169)	(1,313)
Cash flows from financing activities:
Issuance of long-term debt									5,548	5,500
Net change in revolving bank credit facilities									150	440	970
Repayment of long-term debt									(3,189)	(5,086)	(1,254)
Payment of debt issuance costs									(50)	(73)	(5)
Changes in intercompany balances with affiliates, net									(1,055)	388	1,602
Net cash used in financing activities									1,404	1,169	1,313
Subsidiary Guarantors [Member]
Cash flows from operating activities:
Net income (loss)									3,062	2,681	2,299
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities									(2,537)	(1,972)	(2,320)
Provision for doubtful accounts									2,099	1,777	2,262
Depreciation and amortization									915	888	855
Gains on sales of facilities									(2)	(25)	20
Other									(4)		2
Net cash provided by operating activities									3,533	3,349	3,118
Cash flows from investing activities:
Purchase of property and equipment									(1,248)	(1,189)	(921)
Acquisition of hospitals and health care entities									(51)	(34)
Disposal of hospitals and health care entities									48	41	17
Change in investments									9	32	(16)
Other									(6)
Net cash used in investing activities									(1,248)	(1,150)	(920)
Cash flows from financing activities:
Repayment of long-term debt									(59)	(50)	(34)
Distributions to noncontrolling interests									(85)	(65)	(71)
Changes in intercompany balances with affiliates, net									(2,073)	(2,109)	(2,364)
Net cash used in financing activities									(2,217)	(2,224)	(2,469)
Change in cash and cash equivalents									68	(25)	(271)
Cash and cash equivalents at beginning of period				87				112	87	112	383
Cash and cash equivalents at end of period	155				87				155	87	112
Subsidiary Non-Guarantors [Member]
Cash flows from operating activities:
Net income (loss)									1,482	1,447	1,224
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in operating assets and liabilities									(1,731)	(1,438)	(1,958)
Provision for doubtful accounts									1,814	1,392	1,596
Depreciation and amortization									989	932	898
Gains on sales of facilities									7	(4)	(10)
Other									(11)	(5)	(4)
Net cash provided by operating activities									2,550	2,324	1,746
Cash flows from investing activities:
Purchase of property and equipment									(1,127)	(987)	(1,022)
Acquisition of hospitals and health care entities									(300)	(732)	(481)
Disposal of hospitals and health care entities									25	10	16
Change in investments									54	(69)	52
Other									13	10	9
Net cash used in investing activities									(1,335)	(1,768)	(1,426)
Cash flows from financing activities:
Issuance of long-term debt										2
Repayment of long-term debt									(40)	(28)	(374)
Distributions to noncontrolling interests									(410)	(377)	(364)
Changes in intercompany balances with affiliates, net									(639)	43	420
Other									(19)	(19)
Net cash used in financing activities									(1,108)	(379)	(318)
Change in cash and cash equivalents									107	177	2
Cash and cash equivalents at beginning of period				$ 479				$ 302	479	302	300
Cash and cash equivalents at end of period	$ 586				$ 479				$ 586	$ 479	$ 302

Supplemental Condensed Consol82

Supplemental Condensed Consolidating Financial Information and Other Collateral-Related Information - Schedule of Consolidated Statements of Stockholder's Deficit (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based benefit plans	$ 523	$ 321	$ 139
Other	18	6	(13)
Healthtrust, Inc. [Member]
Share-based benefit plans	523	321	139
Other	(18)	(6)	(6)
Distributions from HCA Holdings, Inc., net of contributions to HCA Holdings, Inc.	$ 505	$ 315	$ 133

Quarterly Consolidated Financ83

Quarterly Consolidated Financial Information - Schedule of Quarterly Consolidated Financial Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stockholders Equity Excluding Portion Attributable To Subsidiaries Noncontrolling Interest [Abstract]
Revenues	$ 10,249	$ 9,856	$ 9,897	$ 9,676	$ 9,636	$ 9,220	$ 9,230	$ 8,832	$ 39,678	$ 36,918	$ 34,182
Net income	738	573	665	720	676	611	632	454	2,696	2,373	1,996
Net income attributable to HCA Holdings, Inc.	$ 582	$ 449	$ 507	$ 591	$ 527	$ 518	$ 483	$ 347	$ 2,129	$ 1,875	$ 1,556
Basic earnings per share	$ 1.44	$ 1.08	$ 1.22	$ 1.41	$ 1.22	$ 1.20	$ 1.10	$ 0.78	$ 5.14	$ 4.30	$ 3.50
Diluted earnings per share	$ 1.40	$ 1.05	$ 1.18	$ 1.36	$ 1.19	$ 1.16	$ 1.07	$ 0.76	$ 4.99	$ 4.16	$ 3.37

Quarterly Consolidated Financ84

Quarterly Consolidated Financial Information - Schedule of Quarterly Consolidated Financial Information (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stockholders Equity Excluding Portion Attributable To Subsidiaries Noncontrolling Interest [Abstract]
Losses (gains) on sales of facilities	$ 4	$ 2	$ 3	$ (6)	$ 7	$ 9	$ (7)	$ (13)	$ 5	$ (29)	$ 10
Losses on retirement of debt	7		$ 79		$ 68		$ 143		$ 135	$ 335	$ 17
Legal fees, net of tax	$ 108	$ 49						$ 49