Debt Instrument, Notice Period for Redemption

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- Definition

Interest Payable Description

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- Definition

Notice Period For Note Redemption

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- Definition

Other capitalized costs as of the balance sheet associated with issuance of debt that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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No definition available.

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Ratio of debt to earnings.

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- Definition

Redemption Of Senior Notes

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No definition available.

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Repurchase Price As Percentage Of Principal Amount Of Senior Notes

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Schedule Of Borrowings [Line Items]

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

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

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

Gain (loss) incurred in hedging activities.

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Gross amount of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies.

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Amount of long-term debt classified as other, payable after one year or the operating cycle, if longer.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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No definition available.

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The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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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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Borrowings - Additional Information (Detail)					3 Months Ended		12 Months Ended
Borrowings - Additional Information (Detail)	May 18, 2017 USD ($)	Mar. 14, 2016 EUR (€)	Apr. 04, 2013 USD ($)	Sep. 27, 2007 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 02, 2016 EUR (€)	Dec. 02, 2016 USD ($)	Dec. 01, 2016	Mar. 14, 2016 USD ($)	Nov. 09, 2011
Schedule Of Borrowings [Line Items]
Borrowing terms under new facility							Borrowings under the Credit Facility bear interest at rate of LIBOR corresponding to the term of the loan plus a margin, currently 112.5 bps, linked to the Company's credit rating.
Ratio of net debt														3.50
Amount still available for additional borrowings							$ 950,000,000
Long-term debt							1,632,186,000	$ 1,066,855,000
Current portion of long-term debt							6,966,000	258,516,000
Gain (Loss) on Hedging Activity						$ (3,200,000)	5,310,000	3,244,000	$ 0
Commercial Paper [Member]
Schedule Of Borrowings [Line Items]
Proceeds from Short-term Debt							$ 107,500,000	65,000,000
Revolving Loan Facility [Member]
Schedule Of Borrowings [Line Items]
Ratio of net debt										3.50	3.50	3.25
Senior notes - 2017 [Member]
Schedule Of Borrowings [Line Items]
Debt, face amount	$ 500,000,000
Interest rate of debt	4.375%						4.50%
Debt, notice period for redemption	30 days
Senior notes discount	$ 1,800,000
Proceeds related to the issuance of Senior Notes	493,900,000
Underwriting discount	$ 4,400,000
Repurchase price of principal amount of Senior Notes in percentage	101.00%
Other Deferred Costs, Gross	$ 900,000
Gain (Loss) on Hedging Activity	$ (5,300,000)
Debt Instrument, Term	30 years
Senior Notes - 2016 [Member]
Schedule Of Borrowings [Line Items]
Debt, face amount \| €		€ 500,000,000.0
Interest rate of debt		1.75%					1.99%						1.75%
Debt, notice period for redemption		30 days
Senior notes discount \| €		€ 900,000
Proceeds related to the issuance of Senior Notes \| €		496,000,000
Underwriting discount \| €		€ 3,100,000
Repurchase price of principal amount of Senior Notes in percentage		101.00%
Other Deferred Costs, Gross													$ 1,300,000
Debt Instrument, Term		8 years
Senior Notes - 2007 [Member]
Schedule Of Borrowings [Line Items]
Senior notes				$ 500,000,000
Extinguishment of Debt, Amount					$ 250,000,000
Senior Notes - 2007 [Member] \| Maximum [Member]
Schedule Of Borrowings [Line Items]
Interest rate of debt							6.82%
Senior Notes - 2007 [Member] \| Series A Senior Notes [Member]
Schedule Of Borrowings [Line Items]
Senior notes				$ 250,000,000
Interest rate of debt				6.25%
Debt Instrument, Maturity Date				Sep. 27, 2017
Senior Notes - 2007 [Member] \| Series B Notes [Member]
Schedule Of Borrowings [Line Items]
Senior notes				$ 100,000,000
Interest rate of debt				6.35%
Debt Instrument, Maturity Date				Sep. 27, 2019
Senior Notes - 2007 [Member] \| Series C Notes [Member]
Schedule Of Borrowings [Line Items]
Senior notes				$ 50,000,000
Interest rate of debt				6.50%
Debt Instrument, Maturity Date				Sep. 27, 2022
Senior Notes - 2007 [Member] \| Series D Notes [Member]
Schedule Of Borrowings [Line Items]
Senior notes				$ 100,000,000
Interest rate of debt				6.79%
Debt Instrument, Maturity Date				Sep. 27, 2027
Senior Notes - 2013 [Member]
Schedule Of Borrowings [Line Items]
Senior notes			$ 300,000,000.0
Interest rate of debt			3.20%				3.39%
Senior notes discount			$ 300,000
Proceeds related to the issuance of Senior Notes			297,800,000
Underwriting discount			1,900,000
Other deferred financing costs			$ 900,000
Senior notes interest payable description			interest payable on May 1 and November 1 of each year
Debt Instrument, Maturity Date			May 01, 2023
Notice to holders of the Senior Notes			Upon 30 days’ notice to holders of the Senior Notes - 2013, the Company may redeem the Senior Notes - 2013 for cash in whole
Redemptions of the Senior Notes			redemptions of the Senior Notes - 2013 on or after February 1, 2023
Repurchase price of principal amount of Senior Notes in percentage			101.00%
Deferred realized gains on interest rate swaps [Member]
Schedule Of Borrowings [Line Items]
Deferred realized gains on interest rate swaps							$ 57,000	$ 1,346,000
London Interbank Offered Rate (LIBOR) [Member]
Schedule Of Borrowings [Line Items]
Margin on variable rate							1.125%
Tranche A [Member] \| Revolving Loan Facility [Member]
Schedule Of Borrowings [Line Items]
Revolving credit facility											$ 564,100,000
Tranche A [Member] \| Swing Line Borrowings [Member] \| Revolving Loan Facility [Member]
Schedule Of Borrowings [Line Items]
Revolving credit facility											25,000,000
Tranche B [Member] \| Revolving Loan Facility [Member]
Schedule Of Borrowings [Line Items]
Revolving credit facility											385,900,000
Tranche B [Member] \| Swing Line Borrowings [Member] \| Revolving Loan Facility [Member]
Schedule Of Borrowings [Line Items]
Revolving credit facility										€ 50,000,000	$ 25,000,000