Long-term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Senior notes	$ 4,500,000	$ 4,500,000
Acquisition obligations and other notes payable	70,738	70,645
Capital lease obligations	287,783	283,185
Total debt principal outstanding	9,209,771	9,226,330
Discount and deferred financing costs	(91,950)	(95,985)
Carrying Amount of Long-Term Debt, Net of Unamortized Discount or Premium, Current and Noncurrent, Total	9,117,821	9,130,345
Less current portion	(137,966)	(129,037)
Long-term debt	8,979,855	9,001,308
Term Loan A
Debt Instrument [Line Items]
Senior Secured Credit Facilities	912,500	925,000
Term Loan B
Debt Instrument [Line Items]
Senior Secured Credit Facilities	$ 3,438,750	$ 3,447,500

This represents deferred purchase price obligations associated with acquisitions as well as other notes payable.

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Discount and deferred finance costs.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Amount of long-term debt and capital lease obligations including current maturities.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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