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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 |  |  |  |  |  |  |  |

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