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Goodwill and Other Intangible Assets (Schedule of goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 10, 2013	Apr. 03, 2013	May 03, 2013
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 3,063,517us-gaap_GoodwillGross	$ 2,713,196us-gaap_GoodwillGross
Accumulated impairments losses, beginning balance	(1,327,425)	(1,327,425)
Goodwill, net, beginning balance	1,736,092us-gaap_Goodwill	1,385,771us-gaap_Goodwill
Goodwill recognized during the year	4,010us-gaap_GoodwillAcquiredDuringPeriod	334,178us-gaap_GoodwillAcquiredDuringPeriod
Currency translation during the year	(135,750)us-gaap_GoodwillTranslationAdjustments	16,143us-gaap_GoodwillTranslationAdjustments
Goodwill, ending balance	2,931,777us-gaap_GoodwillGross	3,063,517us-gaap_GoodwillGross
Accumulated impairments losses, ending balance	(1,327,425)	(1,327,425)
Goodwill, net, ending balance	1,604,352us-gaap_Goodwill	1,736,092us-gaap_Goodwill
Carpet Segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	199,132	199,132
Accumulated impairments losses, beginning balance	(199,132)	(199,132)
Goodwill, net, beginning balance	0	0
Goodwill recognized during the year	0	0
Currency translation during the year		0
Goodwill, ending balance	199,132	199,132
Accumulated impairments losses, ending balance	(199,132)	(199,132)
Goodwill, net, ending balance	0	0
Ceramic Segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	1,459,812	1,186,913
Accumulated impairments losses, beginning balance	(531,930)	(531,930)
Goodwill, net, beginning balance	927,882	654,983
Goodwill recognized during the year	(2,497)	279,083
Currency translation during the year	(62,183)	(6,184)
Goodwill, ending balance	1,395,132	1,459,812
Accumulated impairments losses, ending balance	(531,930)	(531,930)
Goodwill, net, ending balance	863,202	927,882
Laminate and Wood Segment [Member]
Goodwill [Line Items]
Business Combination, Consideration Transferred	303
Goodwill [Roll Forward]
Goodwill, beginning balance	1,404,573	1,327,151
Accumulated impairments losses, beginning balance	(596,363)	(596,363)
Goodwill, net, beginning balance	808,210	730,788
Goodwill recognized during the year	6,507	55,095
Currency translation during the year	(73,567)	22,327
Goodwill, ending balance	1,337,513	1,404,573
Accumulated impairments losses, ending balance	(596,363)	(596,363)
Goodwill, net, ending balance	741,150	808,210
Unidentified Wood Business [Member] \| Laminate and Wood Segment [Member]
Goodwill [Roll Forward]
Goodwill, net, ending balance	5,398
Pergo [Member]
Goodwill [Line Items]
Business Combination, Consideration Transferred			145,000
Goodwill [Roll Forward]
Goodwill, net, ending balance			18,456
Marrazzi Group [Member]
Goodwill [Line Items]
Business Combination, Consideration Transferred				1,522,731
Goodwill [Roll Forward]
Goodwill, net, ending balance				276,586
Spano Invest NV [Member]
Goodwill [Line Items]
Business Combination, Consideration Transferred					160,000
Goodwill [Roll Forward]
Goodwill, net, ending balance					$ 37,739