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Debt - Additional Information (Details)			1 Months Ended	9 Months Ended
Debt - Additional Information (Details)	Sep. 25, 2018 USD ($)	Jan. 20, 2017 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jan. 01, 2019	Jul. 01, 2018	Apr. 01, 2018	Jan. 01, 2018	Dec. 31, 2017 USD ($)	Oct. 28, 2015 USD ($)
Debt Instrument [Line Items]
Amount borrowed				$ 640,800,000						$ 684,200,000
Write off of deferred debt issuance costs	$ 500,000
Deferred debt issuance costs				7,200,000						5,800,000
Long-term Debt, Fiscal Year Maturity [Abstract]
2018				500,000
2019				4,500,000
2020				3,200,000
2021				3,900,000
2022				3,700,000
Thereafter				640,000,000
Total				655,800,000
Interest Expense [Member]
Debt Instrument [Line Items]
Amortization of debt issuance costs				1,400,000	$ 1,400,000
Corporate Bond Securities [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
Fair market value				$ 359,600,000
New Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowings under credit facility	$ 700,000,000.0
EBITDA ratio	4.50
Interest coverage ratio	3.00
Effective interest rate on debt facilities				4.01%	3.12%
6.875% Senior Unsecured Notes Due 2026 [Member] \| Corporate Bond Securities [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 350,000,000.0
Amount borrowed				$ 342,200,000						0
Interest rate	6.875%
Effective rate				7.245%
Redemption price, percentage	100.00%
Amount to be redeemed, percentage	35.00%
Redemption price for equity offerings, percentage	106.875%
New Credit Facility and Bond Indenture [Member]
Debt Instrument [Line Items]
Deferred debt issuance costs	$ 3,400,000
Revolving Credit Agreement - U.S. dollar borrowings [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Amount borrowed	$ 96,000,000			$ 91,000,000						344,500,000
Euro Revolver [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Amount borrowed				3,500,000						26,400,000
Term Loan Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument term	7 years
Debt instrument, face amount	$ 200,000,000.0
Amortization rate											1.00%
Amount borrowed				$ 200,000,000						0
Average interest rate on outstanding borrowings				4.25%
Second Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Maximum borrowings under credit facility											$ 1,000,000,000
EBITDA ratio		4.25					3.50	3.75	4.00
Term Loan A-1 [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount											$ 100,000,000
Amount borrowed				$ 0						60,000,000
Long-term Debt, Fiscal Year Maturity [Abstract]
Amortization rate - A-1 - first 2 years											5.00%
Amortization rate - A-1 - final 3 years											10.00%
Prepayment of amortization for term loan			$ 40,000,000
Term Loan A-2 [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount											$ 250,000,000
Amount borrowed				$ 0						$ 244,400,000
Long-term Debt, Fiscal Year Maturity [Abstract]
Amortization rate - A-2											1.00%
First Amendment to Second Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Deferred debt issuance costs		$ 600,000
Revolving Credit Facility [Member] \| New Credit Facility and Bond Indenture [Member]
Debt Instrument [Line Items]
Maximum borrowings under credit facility	$ 400,000,000.0
Debt instrument term	5 years
Revolving line of credit	$ 500,000,000
Revolving Credit Facility [Member] \| Revolving Credit Agreement - U.S. dollar borrowings [Member]
Debt Instrument [Line Items]
Average interest rate on outstanding borrowings				4.00%
Revolving Credit Facility [Member] \| Euro Revolver [Member]
Debt Instrument [Line Items]
Average interest rate on outstanding borrowings				1.75%
Revolving Credit Facility [Member] \| Second Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Maximum borrowings under credit facility											$ 650,000,000
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan A-1 [Member] \| Term Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.25%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan A-1 [Member] \| Term Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				2.50%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan A-2 [Member] \| Term Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.50%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan A-2 [Member] \| Term Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				2.75%
London Interbank Offered Rate (LIBOR) [Member] \| Revolving Credit Facility [Member] \| New Credit Facility and Bond Indenture [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.75%
London Interbank Offered Rate (LIBOR) [Member] \| Revolving Credit Facility [Member] \| Second Amended and Restated Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.25%
London Interbank Offered Rate (LIBOR) [Member] \| Revolving Credit Facility [Member] \| Second Amended and Restated Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				2.50%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan Facility [Member] \| New Credit Facility and Bond Indenture [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				2.00%
Base Rate [Member] \| Term Loan A-1 [Member] \| Term Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				0.25%
Base Rate [Member] \| Term Loan A-1 [Member] \| Term Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.50%
Base Rate [Member] \| Term Loan A-2 [Member] \| Term Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				0.50%
Base Rate [Member] \| Term Loan A-2 [Member] \| Term Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.75%
Base Rate [Member] \| Revolving Credit Facility [Member] \| New Credit Facility and Bond Indenture [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				0.75%
Base Rate [Member] \| Revolving Credit Facility [Member] \| Second Amended and Restated Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				0.25%
Base Rate [Member] \| Revolving Credit Facility [Member] \| Second Amended and Restated Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.50%
Base Rate [Member] \| Term Loan Facility [Member] \| New Credit Facility and Bond Indenture [Member]
Debt Instrument [Line Items]
Basis spread on variable interest rate				1.00%
Forecast [Member] \| Second Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
EBITDA ratio						3.00