Revenue from Contracts with Customers - Summary of Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 2,953,833	$ 2,049,800	$ 5,622,859	$ 4,335,563
Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	1,045,395	759,138	1,981,175	1,617,953
Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	1,132,413	780,633	2,154,629	1,655,643
Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	482,279	342,398	924,341	695,457
Other
Disaggregation of Revenue [Line Items]
Net sales	293,746	167,631	562,714	366,510
United States
Disaggregation of Revenue [Line Items]
Net sales	1,617,948	1,250,692	3,091,012	2,566,952
Europe
Disaggregation of Revenue [Line Items]
Net sales	845,162	499,845	1,611,130	1,112,511
Russia
Disaggregation of Revenue [Line Items]
Net sales	116,445	77,450	206,150	163,584
Other
Disaggregation of Revenue [Line Items]
Net sales	374,278	221,813	714,567	492,516
Global Ceramic segment
Disaggregation of Revenue [Line Items]
Net sales	1,039,503	753,335	1,969,374	1,601,785
Flooring NA segment
Disaggregation of Revenue [Line Items]
Net sales	1,081,189	800,088	2,050,439	1,648,418
Flooring ROW segment
Disaggregation of Revenue [Line Items]
Net sales	833,141	496,377	1,603,046	1,085,360
Operating segments | Global Ceramic segment
Disaggregation of Revenue [Line Items]
Net sales	1,039,503	753,335	1,969,374	1,601,785
Operating segments | Global Ceramic segment | Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	1,036,733	751,735	1,964,192	1,600,185
Operating segments | Global Ceramic segment | Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	2,770	1,600	5,182	1,600
Operating segments | Global Ceramic segment | Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Operating segments | Global Ceramic segment | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Operating segments | Global Ceramic segment | United States
Disaggregation of Revenue [Line Items]
Net sales	568,062	472,538	1,102,609	977,643
Operating segments | Global Ceramic segment | Europe
Disaggregation of Revenue [Line Items]
Net sales	246,067	146,647	453,567	316,182
Operating segments | Global Ceramic segment | Russia
Disaggregation of Revenue [Line Items]
Net sales	78,962	55,216	140,980	115,024
Operating segments | Global Ceramic segment | Other
Disaggregation of Revenue [Line Items]
Net sales	146,412	78,934	272,218	192,936
Operating segments | Flooring NA segment
Disaggregation of Revenue [Line Items]
Net sales	1,081,189	800,088	2,050,439	1,648,418
Operating segments | Flooring NA segment | Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	8,662	7,403	16,983	17,768
Operating segments | Flooring NA segment | Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	863,419	615,754	1,635,499	1,299,469
Operating segments | Flooring NA segment | Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	209,108	176,931	397,957	331,181
Operating segments | Flooring NA segment | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Operating segments | Flooring NA segment | United States
Disaggregation of Revenue [Line Items]
Net sales	1,047,964	777,778	1,984,062	1,588,226
Operating segments | Flooring NA segment | Europe
Disaggregation of Revenue [Line Items]
Net sales	249	842	579	3,478
Operating segments | Flooring NA segment | Russia
Disaggregation of Revenue [Line Items]
Net sales	20	0	50	0
Operating segments | Flooring NA segment | Other
Disaggregation of Revenue [Line Items]
Net sales	32,956	21,468	65,748	56,714
Operating segments | Flooring ROW segment
Disaggregation of Revenue [Line Items]
Net sales	833,141	496,377	1,603,046	1,085,360
Operating segments | Flooring ROW segment | Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Operating segments | Flooring ROW segment | Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	266,224	163,279	513,948	354,574
Operating segments | Flooring ROW segment | Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	273,171	165,467	526,384	364,276
Operating segments | Flooring ROW segment | Other
Disaggregation of Revenue [Line Items]
Net sales	293,746	167,631	562,714	366,510
Operating segments | Flooring ROW segment | United States
Disaggregation of Revenue [Line Items]
Net sales	1,922	376	4,341	1,083
Operating segments | Flooring ROW segment | Europe
Disaggregation of Revenue [Line Items]
Net sales	598,846	352,356	1,156,984	792,851
Operating segments | Flooring ROW segment | Russia
Disaggregation of Revenue [Line Items]
Net sales	37,463	22,234	65,120	48,560
Operating segments | Flooring ROW segment | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 194,910	$ 121,411	$ 376,601	$ 242,866