Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value of all liability derivatives designated as cash flow hedging instruments.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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Fixed interest rate related to the interest rate derivative.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Derivative [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 2,704,068	$ 2,317,723	$ 2,949,557
USD Interest Rate Swap Contract One [Member]
Derivative [Line Items]
Notional principal amount of outstanding of the interest rate swap agreement	$ 50,000
Fixed interest rate	2.878%
USD Interest Rate Swap Contract Two [Member]
Derivative [Line Items]
Notional principal amount of outstanding of the interest rate swap agreement	$ 50,000
Fixed interest rate	2.878%
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Derivative [Line Items]
Cash and cash equivalents	$ 141,400
Carrying (Reported) Amount, Fair Value Disclosure [Member] \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	2,477
Estimate of Fair Value, Fair Value Disclosure [Member]
Derivative [Line Items]
Cash and cash equivalents	141,400
Estimate of Fair Value, Fair Value Disclosure [Member] \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	2,477
Bank debt [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	1,352,731
Bank debt [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	1,352,731
4 3/4% Senior Notes due 2025 [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	300,000
4 3/4% Senior Notes due 2025 [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	296,565
3 1/4% Senior Notes due 2025 [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	729,170
3 1/4% Senior Notes due 2025 [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	755,056
5 1/2% Senior Notes due 2022 [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	300,000
5 1/2% Senior Notes due 2022 [Member] \| Estimate of Fair Value, Fair Value Disclosure [Member]
Derivative [Line Items]
Long-Term Debt	$ 303,069
5 1/2% Senior Notes due 2022 [Member]
Derivative [Line Items]
Senior note interest rate (percent)	5.50%	5.50%	5.50%
Debt, Long-term and Short-term, Combined Amount	$ 300,000	$ 300,000	$ 300,000
3 1/4% Senior Notes due 2025 [Member]
Derivative [Line Items]
Senior note interest rate (percent)	3.25%	3.25%	3.25%
Debt, Long-term and Short-term, Combined Amount	$ 729,170	$ 744,380	$ 801,060
4 3/4% Senior Notes due 2025 [Member]
Derivative [Line Items]
Senior note interest rate (percent)	4.75%	4.75%	4.75%
Debt, Long-term and Short-term, Combined Amount	$ 300,000	$ 300,000	$ 300,000
5% Senior Notes due 2020 [Member]
Derivative [Line Items]
Senior note interest rate (percent)			5.00%
Debt, Long-term and Short-term, Combined Amount	$ 0	$ 0	$ 280,000
Accumulated Translation Adjustment [Member]
Derivative [Line Items]
Foreign currency gains of net investment hedges included in accumulated other comprehensive loss	$ 7,000