Commitments and Contingencies (Narrative) (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 21, 2011 claim	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Commitments And Contingencies [Line Items]
Rent expense under operating leases		$ 125,103	$ 116,663	$ 120,677
Polyurethane foam antitrust litigation
Commitments And Contingencies [Line Items]
Number of claims filed | claim	2
Polyurethane foam antitrust litigation | Selling, general and administrative expenses
Commitments And Contingencies [Line Items]
Charge for the settlement and defense of antitrust cases		122,480
Standby letters of credit related to various insurance contracts and foreign vendor commitments | Senior secured credit facility
Commitments And Contingencies [Line Items]
Standby letters of credit for various insurance contracts and commitments to foreign vendors		$ 941	$ 1,381
Standby letters of credit related to various insurance contracts and foreign vendor commitments | Senior secured credit facility | Maximum
Commitments And Contingencies [Line Items]
Expiration period for standby letters of credit		2 years