Long-Term Debt - Credit Agreement Additional Information (Details) - USD ($)				12 Months Ended
	Apr. 01, 2018	Apr. 26, 2017	Feb. 27, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Apr. 30, 2018	May 27, 2015
Debt Instrument [Line Items]
Proceeds from Other Debt	$ 32,900,000
Line of Credit Facility, Increase in Borrowing Capacity		$ 100,000,000
Debt Refinancing Costs				$ 5,800,000
Other Debt, Current				$ 21,400,000
Amended and Restated Credit Agreement | Term A Loan
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 1,250,000,000
Amended and Restated Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 750,000,000
Credit Agreement First Amendment | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.25%
Credit Agreement First Amendment | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			2.25%
Variable rate, floor (as a percent)			0.75%
Term Loan and Revolving Credit Facility [Member] | Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate, Decrease		0.25%
Term Loan and Revolving Credit Facility [Member] | Minimum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		0.25%
Term Loan and Revolving Credit Facility [Member] | Minimum | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		1.25%
Term Loan and Revolving Credit Facility [Member] | Maximum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		1.00%
Term Loan and Revolving Credit Facility [Member] | Maximum | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		2.00%
Variable rate, floor (as a percent)		0.00%
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement | Minimum
Debt Instrument [Line Items]
Unused capacity, commitment fee (as a percent)				0.15%
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement | Minimum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.25%
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement | Minimum | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.25%
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement | Maximum
Debt Instrument [Line Items]
Unused capacity, commitment fee (as a percent)				0.20%
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement | Maximum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.50%
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement | Maximum | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.50%
Term Loan and Revolving Credit Facility [Member] | Term A Loan | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.50%
Term Loan | Term A Loan
Debt Instrument [Line Items]
Principal amount of debt		$ 1,030,000,000.0						$ 800,000,000.0
Term loans, interest rate at period end (as a percent)				4.02%
Debt Instrument, Increase in Face Amount		300,000,000
Term Loan | Term B Loan
Debt Instrument [Line Items]
Principal amount of debt								400,000,000.0
Quarterly installments of principal payments, percent of initial aggregate principal amount						1.00%
Term Loan | Term B Loan | Eurodollar
Debt Instrument [Line Items]
Variable rate, floor (as a percent)				0.75%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 500,000,000.0						$ 400,000,000.0
Unused capacity, commitment fee (as a percent)				0.20%
Amount unused on the Revolving Credit Facility				$ 667,500,000
Line of credit facility, maximum amount outstanding during period				676,900,000	$ 180,000,000
Repayments of Lines of Credit				$ 649,400,000	$ 175,000,000
Credit facility, interest rate at period end (as a percent)				3.92%
Line of Credit Facility, Unused Capacity, Reduction in Commitment Fee Percentage		0.05%
Line of Credit | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Unused capacity, commitment fee (as a percent)		0.15%
Line of Credit | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Unused capacity, commitment fee (as a percent)		0.30%
Line of Credit | Term A Loan
Debt Instrument [Line Items]
Long-term Debt, Repricing Expense				$ 3,300,000
Line of Credit | Term B Loan
Debt Instrument [Line Items]
Long-term Debt, Repricing Expense				$ 1,100,000
Other Debt
Debt Instrument [Line Items]
Debt Instrument, Imputed Rate	3.44%