Acquisitions (Narrative) (Details) - USD ($)				1 Months Ended	3 Months Ended		12 Months Ended
	Dec. 07, 2015	Jun. 12, 2015	May 12, 2015	Jun. 12, 2015	Oct. 03, 2015	Apr. 04, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 09, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Redeemable noncontrolling interest							$ 23,696,000	$ 21,952,000
Goodwill							2,274,426,000	$ 2,293,365,000		$ 1,604,352,000
IVC group and KAI group
Business Acquisition [Line Items]
Enterprise value				$ 1,341,050,000
Assumed indebtedness				17,146,000
Goodwill		$ 740,140,000		740,140,000
IVC group
Business Acquisition [Line Items]
Enterprise value		1,146,437,000
Tax liabilities and indemnification assets assumed		34,781,000		34,781,000
Assumed indebtedness		17,122,000
Cash payments to acquire entity		732,189,000
Debt paid		261,152,000
KAI group
Business Acquisition [Line Items]
Enterprise value			$ 194,613,000
Assumed indebtedness			24,000
Cash payments to acquire entity			169,540,000
Debt paid			$ 25,073,000
Percentage of voting interests acquired			90.00%
Ownership interest controlled by a third party			10.00%
Redeemable noncontrolling interest							$ 23,696,000
Xtratherm
Business Acquisition [Line Items]
Enterprise value	$ 158,851,000
Intangible assets subject to amortization	39,784,000
Business acquisition, Goodwill, Expected tax deductible amount	0
Goodwill	33,307,000
Minimum | IVC group and KAI group
Business Acquisition [Line Items]
Intangible assets subject to amortization, useful life							12 years
Maximum | IVC group and KAI group
Business Acquisition [Line Items]
Intangible assets subject to amortization, useful life							14 years
Customer relationships | IVC group and KAI group
Business Acquisition [Line Items]
Tradenames		48,563,000		48,563,000
Customer relationships | Xtratherm
Business Acquisition [Line Items]
Tradenames	$ 4,681,000
Customer relationships | IVC group and KAI group
Business Acquisition [Line Items]
Intangible assets subject to amortization		$ 224,326,000		$ 224,326,000
Flooring ROW | Unidentified wood business
Business Acquisition [Line Items]
Enterprise value						$ 2,822,000
Goodwill						$ 2,659,000
Global Ceramic | Unidentified ceramic business
Business Acquisition [Line Items]
Enterprise value					$ 20,423,000
Goodwill					$ 269,000
2.00% senior notes, payable January 14, 2022; interest payable annually
Business Acquisition [Line Items]
Interest rate percentage									2.00%
Treasury stock | IVC group
Business Acquisition [Line Items]
Shares issued for acquisition (in shares)		806,000
Shares issued for acquisition, value		$ 153,096,000