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Other Noncurrent Liabilities and Redeemable/Noncontrolling Interests - Additional Information (Detail) $ in Millions | 1 Months Ended |
--- | --- | ---
May 31, 2016 USD ($) Hospital | Jun. 30, 2017 USD ($) Facility
Minority Interest [Line Items] |  |
Behavioral health care facilities with outside owners holding non-controlling minority interest | Facility |  | 2
Non-controlling interest balances |  | $ 65
Redeemable non-controlling interest balances |  | $ 7
Acute Care Facilities | Washington, District of Columbia |  |
Minority Interest [Line Items] |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  | 20.00%
Acute Care Facilities | Texas |  |
Minority Interest [Line Items] |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  | 11.00%
Acute Care Facilities | Nevada |  |
Minority Interest [Line Items] |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  | 5.00%
Behavioral Health Services | Pennsylvania |  |
Minority Interest [Line Items] |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  | 20.00%
Behavioral Health Services | Ohio |  |
Minority Interest [Line Items] |  |
Percentage of non-controlling, minority ownership interests held by outside owners |  | 30.00%
Acute Care Hospital Services | Las Vegas, Nevada |  |
Minority Interest [Line Items] |  |
Number of hospital facilities | Hospital | 6 |
Payments to purchase minority ownership interests | $ 445 |
Purchase price of minority ownership interests | 418 |
Return of reserve capital to purchase of minority ownership interests | $ 27 |
Acute Care Hospital Services | Las Vegas, Nevada | Minimum |  |
Minority Interest [Line Items] |  |
Ownership interests purchased | 26.10% |
Acute Care Hospital Services | Las Vegas, Nevada | Maximum |  |
Minority Interest [Line Items] |  |
Ownership interests purchased | 27.50% |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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