Revenue from Contracts with Customers - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2026	Jun. 28, 2025	Jul. 04, 2026	Jun. 28, 2025
Disaggregation of Revenue [Line Items]
Net sales	$ 2,991.4	$ 2,802.1	$ 5,720.1	$ 5,327.9
Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	1,191.6	1,101.5	2,273.1	2,077.5
Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	989.9	979.8	1,888.1	1,868.3
Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	482.6	447.8	931.0	839.4
Other
Disaggregation of Revenue [Line Items]
Net sales	327.3	273.0	627.9	542.7
United States
Disaggregation of Revenue [Line Items]
Net sales	1,592.0	1,518.8	3,032.2	2,899.1
Europe
Disaggregation of Revenue [Line Items]
Net sales	985.2	880.1	1,874.2	1,654.3
Latin America
Disaggregation of Revenue [Line Items]
Net sales	200.6	178.5	385.1	341.2
Other
Disaggregation of Revenue [Line Items]
Net sales	213.6	224.7	428.6	433.3
Operating segments | Global Ceramic
Disaggregation of Revenue [Line Items]
Net sales	1,209.7	1,120.9	2,307.1	2,114.7
Operating segments | Global Ceramic | Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	1,191.6	1,101.5	2,273.1	2,077.5
Operating segments | Global Ceramic | Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	18.1	19.4	34.0	37.2
Operating segments | Global Ceramic | Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Global Ceramic | Other
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Global Ceramic | United States
Disaggregation of Revenue [Line Items]
Net sales	636.2	591.0	1,218.5	1,133.8
Operating segments | Global Ceramic | Europe
Disaggregation of Revenue [Line Items]
Net sales	340.3	318.4	639.0	572.6
Operating segments | Global Ceramic | Latin America
Disaggregation of Revenue [Line Items]
Net sales	187.3	167.4	359.2	320.9
Operating segments | Global Ceramic | Other
Disaggregation of Revenue [Line Items]
Net sales	45.9	44.1	90.4	87.4
Operating segments | Flooring NA
Disaggregation of Revenue [Line Items]
Net sales	976.1	946.8	1,856.1	1,809.2
Operating segments | Flooring NA | Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Flooring NA | Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	755.5	747.9	1,432.0	1,425.4
Operating segments | Flooring NA | Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	220.6	198.9	424.1	383.8
Operating segments | Flooring NA | Other
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Flooring NA | United States
Disaggregation of Revenue [Line Items]
Net sales	952.2	924.2	1,805.9	1,759.7
Operating segments | Flooring NA | Europe
Disaggregation of Revenue [Line Items]
Net sales	0.7	1.3	1.9	1.7
Operating segments | Flooring NA | Latin America
Disaggregation of Revenue [Line Items]
Net sales	1.2	1.2	2.9	1.9
Operating segments | Flooring NA | Other
Disaggregation of Revenue [Line Items]
Net sales	22.0	20.1	45.4	45.9
Operating segments | Flooring ROW
Disaggregation of Revenue [Line Items]
Net sales	805.6	734.4	1,556.9	1,404.0
Operating segments | Flooring ROW | Ceramic & Stone
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Flooring ROW | Carpet & Resilient
Disaggregation of Revenue [Line Items]
Net sales	216.3	212.5	422.1	405.7
Operating segments | Flooring ROW | Laminate & Wood
Disaggregation of Revenue [Line Items]
Net sales	262.0	248.9	506.9	455.6
Operating segments | Flooring ROW | Other
Disaggregation of Revenue [Line Items]
Net sales	327.3	273.0	627.9	542.7
Operating segments | Flooring ROW | United States
Disaggregation of Revenue [Line Items]
Net sales	3.6	3.6	7.9	5.6
Operating segments | Flooring ROW | Europe
Disaggregation of Revenue [Line Items]
Net sales	644.2	560.4	1,233.3	1,080.0
Operating segments | Flooring ROW | Latin America
Disaggregation of Revenue [Line Items]
Net sales	12.1	9.9	23.0	18.4
Operating segments | Flooring ROW | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 145.7	$ 160.5	$ 292.7	$ 300.0