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Debt - Schedule of Borrowings Outstanding (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	May 24, 2016	Sep. 24, 2015
Long-term Debt, Current and Noncurrent [Abstract]
Other	$ 36,700,000	$ 35,800,000
Total debt	1,762,500,000	1,901,000,000
Less: deferred financing costs	(9,400,000)	(12,900,000)
Total debt, net	1,753,100,000	1,888,100,000
Less: current portion	(72,400,000)	(70,300,000)
Total long-term debt, net	1,680,700,000	$ 1,817,800,000
LIBOR
Line of Credit Facility [Abstract]
Index rate or LIBOR plus (percentage)		0.08%
2026 Senior Notes
Long-term Debt, Current and Noncurrent [Abstract]
Senior notes, noncurrent	$ 600,000,000.0	$ 600,000,000	$ 600,000,000.0
Line of Credit Facility [Abstract]
Stated percentage	5.50%	5.50%	5.50%
2023 Senior Notes
Long-term Debt, Current and Noncurrent [Abstract]
Senior notes, noncurrent	$ 450,000,000.0	$ 450,000,000		$ 450,000,000.0
Line of Credit Facility [Abstract]
Stated percentage	5.625%	5.625%		5.625%
Securitized debt
Long-term Debt, Current and Noncurrent [Abstract]
Senior notes, noncurrent	$ 375,000,000.0	$ 375,000,000
Line of Credit Facility [Abstract]
Stated percentage	6.875%
8.0% Sealy Notes
Long-term Debt, Current and Noncurrent [Abstract]
Securitized debt	$ 49,000,000	$ 0
Line of Credit Facility [Abstract]
Stated percentage		8.00%
Capital lease obligations
Long-term Debt, Current and Noncurrent [Abstract]
Capital lease obligations	71,800,000	$ 73,300,000
Credit Facility 2016
Long-term Debt, Current and Noncurrent [Abstract]
Less: deferred financing costs		(3,600,000)
Credit Facility 2016 \| Term A Facility
Long-term Debt, Current and Noncurrent [Abstract]
Line of credit	$ 555,000,000	$ 585,000,000
Credit Facility 2016 \| Term A Facility \| LIBOR
Line of Credit Facility [Abstract]
Index rate or LIBOR plus (percentage)	1.75%	1.50%
Credit Facility 2016 \| Revolver
Long-term Debt, Current and Noncurrent [Abstract]
Line of credit	$ 0	$ 156,900,000
Line of Credit Facility [Abstract]
Index rate or LIBOR plus (percentage)	1.75%	1500000.00%