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Acquisitions (Details) (USD $)
In Millions, unless otherwise specified
Jan. 10, 2013
Pergo [Member]
Apr. 03, 2013
Subsequent Event [Member]
Marrazzi Group [Member]
May 03, 2013
Subsequent Event [Member]
Spano Invest NV [Member]
Business Acquisition [Line Items]      
Value of acquisition $ 150 $ 1,500 $ 164