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Aggregate Net Purchase Price of Acquisitions Allocated to Assets and Liabilities Based on Preliminary Estimated Fair Values (Detail) (USD $) In Thousands, unless otherwise specified |  |  | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2014 2014 Acquisitions of assets and liabilities
Business Acquisition [Line Items] |  |  |  |
Working capital, net |  |  | $ (41,547) | [1]
Property & equipment |  |  | 149,914 |
Goodwill | 3,296,358 | 3,049,016 | 246,606 |
Other assets |  |  | 58,835 |
Income tax assets, net |  |  | 4,019 |
Debt |  |  | (16,286) |
Other |  |  | 864 |
Cash paid during first nine months of 2014 |  |  | $ 402,405 |
[1] | Includes liability for incurred but unpaid medical claims at date of acquisition of commercial health insurer.

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- Definition Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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