The increase during the period in capital lease obligations due to entering into new capital leases.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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LINES OF CREDIT AND LONG-TERM DEBT - Additional Information (Detail) (USD $)	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Jan. 22, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,061,785,000us-gaap_LongTermDebt
Revolving lines of credit	0us-gaap_LinesOfCreditCurrent		9,576,000us-gaap_LinesOfCreditCurrent
Capital lease obligations incurred	12,700,000us-gaap_CapitalLeaseObligationsIncurred
Revolving line of credit
Debt Instrument [Line Items]
Maximum borrowing capacity	50,000,000
Revolving lines of credit	0
Outstanding letters of credit	22,800,000
Term loan facility due 2020 \| Term Notes
Debt Instrument [Line Items]
Additional financing obtained per the Amended Financing Agreement		75,000,000
Aggregate principal amount		425,000,000
Proceeds from term loan		71,000,000
Discount rate used for issuance of add-on term loan (percent)		2.50%
Broker fee (percent)		1.50%
Consent fee (percent)		1.17%
Additional debt issuance cost		$ 100,000