Debt - Credit Facilities and Capital Leases (Details)	3 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Apr. 06, 2016 USD ($)
Line of Credit Facility [Line Items]
Debt issuance cost			$ 9,400,000	$ 12,900,000
Loss on extinguishment of debt	$ 47,200,000	$ 0	$ 0	47,200,000	$ 0
Minimum
Line of Credit Facility [Line Items]
Remaining lease term (in years)			1 year
Maximum
Line of Credit Facility [Line Items]
Remaining lease term (in years)			14 years
2012 Credit Agreement
Line of Credit Facility [Line Items]
Principal borrowing capacity, maximum			$ 350,000,000.0
Write-off of deferred financing costs			11,000,000
2012 Credit Agreement | Term A Facility
Line of Credit Facility [Line Items]
Principal borrowing capacity, maximum			550,000,000.0
2012 Credit Agreement | Term B facility
Line of Credit Facility [Line Items]
Principal borrowing capacity, maximum			870,000,000.0
Credit Facility 2016
Line of Credit Facility [Line Items]
Debt issuance cost				$ 3,600,000
Debt instrument amortization period deferred financing costs (in years				5 years
Loss on extinguishment of debt				$ 1,900,000
Credit Facility 2016 | Line of Credit
Line of Credit Facility [Line Items]
Principal borrowing capacity, maximum						$ 500,000,000.0
Line of credit facility, increase (decrease)						500,000,000.0
Line of credit facility, maximum borrowing capacity in other currencies						250,000,000.0
Line of credit facility, capacity available for issuance of letters of credit						100,000,000.0
Line of credit facility, capacity available for swing line loans						$ 50,000,000.0
Equity interest of subsidiary guarantor (percentage)						100.00%
Equity voting rights of subsidiary (percentage)						65.00%
Domestic qualified cash, maximum percentage						100.00%
Foreign qualified cash, maximum percentage						60.00%
Domestic and foreign qualified cash, maximum						$ 150,000,000.0
Domestic qualified cash			18,400,000
Foreign qualified cash			$ 14,100,000
Total net leverage ratio				3.91
Line of credit facility, commitment fee percentage			0.30%
Credit Facility 2016 | Line of Credit | Maximum
Line of Credit Facility [Line Items]
Total net leverage ratio			5.00
Credit Facility 2016 | Line of Credit | Term Loan Facility
Line of Credit Facility [Line Items]
Principal borrowing capacity, maximum						500,000,000.0
Credit Facility 2016 | Line of Credit | Delayed Draw Term Loan Facility
Line of Credit Facility [Line Items]
Principal borrowing capacity, maximum						$ 100,000,000.0
Proceeds from lines of credit				$ 100,000,000.0
LIBOR
Line of Credit Facility [Line Items]
Index rate or LIBOR plus (percentage)				0.08%
LIBOR | Credit Facility 2016 | Term A Facility
Line of Credit Facility [Line Items]
Index rate or LIBOR plus (percentage)			1.75%	1.50%
LIBOR | Credit Facility 2016 | Line of Credit
Line of Credit Facility [Line Items]
Index rate or LIBOR plus (percentage)			1.75%
Base Rate | Credit Facility 2016 | Line of Credit
Line of Credit Facility [Line Items]
Index rate or LIBOR plus (percentage)			0.75%
Sealy Notes
Line of Credit Facility [Line Items]
Stated percentage				8.00%