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Leases - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Leases Disclosure [Line Items] |  |  |
Rent expense under all operating leases | $ 514,287 | $ 460,093 | $ 424,096
Net book value of property and equipment under capital leases | $ 261,960 | $ 197,344 |
Minimum |  |  |
Leases Disclosure [Line Items] |  |  |
Facilities leased under non-cancellable operating leases term range, minimum | 5 years |  |
Facilities leased under non-cancellable operating leases renewal option range, minimum | 5 years |  |
Maximum |  |  |
Leases Disclosure [Line Items] |  |  |
Facilities leased under non-cancellable operating leases term range, minimum | 15 years |  |
Facilities leased under non-cancellable operating leases renewal option range, minimum | 10 years |  |

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- Definition Leases Disclosure [Line Items] + References No definition available. + Details
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- Definition The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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