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Business and Summary of Significant Accounting Policies - Additional Information (Detail) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2015 USD ($) | Sep. 01, 2015 USD ($) | Jan. 01, 2014 | Dec. 31, 2015 USD ($) Facility shares | Dec. 31, 2014 USD ($) shares | Dec. 31, 2013 USD ($) shares
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Establishment of partial reserve in the allowance for doubtful accounts for self-pay balances outstanding from the date of discharge, in days |  |  |  | 90 days |  |
Establishment of fully reserve for self-pay balances outstanding from the date of discharge, in days |  |  |  | 90 days |  |
Establishment of fully reserve in the allowance for doubtful accounts for third party liability accounts from the date of discharge, in days |  |  |  | 180 days |  |
Patients treated at hospitals for non elective services gross income less than federal poverty guidelines |  |  |  | 400.00% |  |
Percentage of uninsured discount extended for unqualified charity patients after modification |  |  | 60.00% |  |  |
Percentage of uninsured discount extended for unqualified charity patients before modification |  |  | 30.00% |  |  |
Net of allowance for doubtful accounts |  |  |  | $ 399,000,000 | $ 325,000,000 |
Provision for doubtful accounts |  |  |  | 741,273,000 | 698,983,000 | $ 1,127,216,000
Capitalize interest expense |  |  |  | 304,000 | 0 | 4,900,000
Depreciation expense |  |  |  | 337,500,000 | 314,500,000 | 285,600,000
Impairment of goodwill or indefinite-lived intangible assets | $ 0 | $ 0 |  |  | 0 | $ 0
Intangible assets, net |  |  |  | 219,000,000 | 98,000,000 |
Intangible assets, net of accumulated amortization |  |  |  | 25,000,000 | 19,000,000 |
Amount of estimated future payments related to physician-related contractual commitments |  |  |  | 1,000,000 | 2,000,000 |
Amount of potential future financial obligations |  |  |  | $ 1,000,000 |  |
Acute care facilities with outside owners holding non-controlling minority interest | Facility |  |  |  | 6 |  |
Redeemable non-controlling interest balances |  |  |  | $ 243,000,000 | 240,000,000 |
Non-controlling interest balances |  |  |  | 60,000,000 | 55,000,000 |
Net favorable cash inflows associated with forward exchange contracts |  |  |  | $ 22,900,000 | $ 15,600,000 |
Anti-dilutive weighted average stock options excluded from computation of earnings per share | shares |  |  |  | 765,000 | 2,250 | 4,000
Revenue from Medicaid programs |  |  |  | $ 9,784,724,000 | $ 8,904,071,000 | $ 8,495,089,000
Increase (decrease) in net revenue |  |  |  |  | 140,000,000 |
Increase (decrease) in other operating expense |  |  |  |  |  | 84,000,000
State Medicaid programs |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Revenue from Medicaid programs |  |  |  | 307,000,000 | 295,000,000 | 213,000,000
Revenue offset amount |  |  |  | 137,000,000 | 140,000,000 | 84,000,000
Net aggregate benefit |  |  |  | 170,000,000 | 155,000,000 | 130,000,000
Net revenues |  |  |  | 46,000,000 | 59,000,000 | $ 54,000,000
Restricted Stock |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Restricted stock, vesting period |  |  |  |  |  | 7 years
Tradename |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, net |  |  |  | 124,000,000 |  |
Medicare Licenses |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, net |  |  |  | 57,000,000 | 57,000,000 |
Certificates of Need |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, net |  |  |  | 12,000,000 | 12,000,000 |
Contract Relationships and Other |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, net |  |  |  | $ 25,000,000 |  |
Contract Relationships |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, net |  |  |  |  | 29,000,000 |
Building and Building Improvements | Minimum |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property and equipment, useful lives, maximum years |  |  |  | 20 years |  |
Building and Building Improvements | Maximum |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property and equipment, useful lives, maximum years |  |  |  | 40 years |  |
Equipment | Minimum |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property and equipment, useful lives, maximum years |  |  |  | 3 years |  |
Equipment | Maximum |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property and equipment, useful lives, maximum years |  |  |  | 15 years |  |
Acute Care Hospitals |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Provision for doubtful accounts |  |  |  | $ 631,000,000 | $ 590,000,000 | $ 1,020,000,000
Medicare And Medicaid | Net Revenue | Customer Concentration Risk |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of revenue |  |  |  | 35.00% | 38.00% | 39.00%
Care Entities | Net Revenue |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of revenue |  |  |  | 52.00% | 50.00% | 49.00%
Illinois |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable |  |  |  | $ 28,000,000 | $ 44,000,000 |
Illinois | Financing Receivables in Excess 60 Days Past Due |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Receivables due outstanding in excess of 60 days |  |  |  | 12,000,000 | 23,000,000 |
Texas |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable |  |  |  | 80,000,000 | $ 102,000,000 |
Texas | Uncompensated Care Program |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable |  |  |  | 47,000,000 |  |
Texas | Disproportionate Share Hospital Program |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable |  |  |  | 9,000,000 |  |
Texas | Delivery System Reform Incentive Pool |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable |  |  |  | $ 24,000,000 |  |
Las Vegas, Nevada | Acute Care Facilities |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  |  |  | 28.00% |  |
Las Vegas, Nevada | Net Revenue | Geographic Concentration Risk |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of revenue |  |  |  | 13.00% | 14.00% | 14.00%
Washington, District of Columbia | Acute Care Facilities |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  |  |  | 20.00% |  |
Laredo, Texas | Acute Care Facilities |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  |  |  | 11.00% |  |
Philadelphia, Pennsylvania | Behavioral Health Care Facility |  |  |  |  |  |
Summary Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  |  |  | 20.00% |  |

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