Goodwill and Intangible Assets - Schedule of goodwill (Details) $ in Thousands	3 Months Ended
	Apr. 03, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	$ 3,978,256
Accumulated impairment losses, beginning balance	(1,327,425)
Goodwill, net, beginning balance	2,650,831
Currency translation during the period	(56,104)
Goodwill, gross, ending balance	3,922,152
Accumulated impairment losses, ending balance	(1,327,425)
Goodwill, net, ending balance	2,594,727
Global Ceramic segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	1,579,491
Accumulated impairment losses, beginning balance	(531,930)
Goodwill, net, beginning balance	1,047,561
Currency translation during the period	(11,876)
Goodwill, gross, ending balance	1,567,615
Accumulated impairment losses, ending balance	(531,930)
Goodwill, net, ending balance	1,035,685
Flooring NA segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	874,198
Accumulated impairment losses, beginning balance	(343,054)
Goodwill, net, beginning balance	531,144
Currency translation during the period	0
Goodwill, gross, ending balance	874,198
Accumulated impairment losses, ending balance	(343,054)
Goodwill, net, ending balance	531,144
Flooring ROW segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	1,524,567
Accumulated impairment losses, beginning balance	(452,441)
Goodwill, net, beginning balance	1,072,126
Currency translation during the period	(44,228)
Goodwill, gross, ending balance	1,480,339
Accumulated impairment losses, ending balance	(452,441)
Goodwill, net, ending balance	$ 1,027,898