Segment Reporting (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2026 USD ($)	Jun. 28, 2025 USD ($)	Jul. 04, 2026 USD ($) segment	Jun. 28, 2025 USD ($)	Dec. 31, 2025 USD ($)
Segment Reporting [Abstract]
Number of reporting segments (in segments) | segment			3
Segment Reporting [Line Items]
Assets	$ 13,823.2		$ 13,823.2		$ 13,687.3
Net sales	2,991.4	$ 2,802.1	5,720.1	$ 5,327.9
Cost of sales	2,196.3	2,087.7	4,283.1	4,030.2
Selling, general and administrative expenses	541.4	525.7	1,071.5	1,012.9
Operating income (loss)	253.7	188.7	365.5	284.8
General Corporate expense	16.9	17.8	30.6	31.5
Other (income) and expense, net	0.4	3.0	1.7	2.7
Interest expense	4.8	5.2	7.1	11.6
Earnings (loss) before income taxes	248.5	180.5	356.7	270.5
Depreciation and amortization	159.1	155.6	341.1	306.0
Capital expenditures (excluding acquisitions)	88.4	80.2	190.6	169.3
Ceramic & Stone
Segment Reporting [Line Items]
Net sales	1,191.6	1,101.5	2,273.1	2,077.5
Carpet & Resilient
Segment Reporting [Line Items]
Net sales	989.9	979.8	1,888.1	1,868.3
Laminate & Wood
Segment Reporting [Line Items]
Net sales	482.6	447.8	931.0	839.4
Other
Segment Reporting [Line Items]
Net sales	327.3	273.0	627.9	542.7
United States
Segment Reporting [Line Items]
Net sales	1,592.0	1,518.8	3,032.2	2,899.1
Europe
Segment Reporting [Line Items]
Net sales	985.2	880.1	1,874.2	1,654.3
Latin America
Segment Reporting [Line Items]
Net sales	200.6	178.5	385.1	341.2
Other
Segment Reporting [Line Items]
Net sales	213.6	224.7	428.6	433.3
Operating segments
Segment Reporting [Line Items]
Operating income (loss)	270.6	206.5	396.1	316.3
Operating segments | Global Ceramic
Segment Reporting [Line Items]
Assets	5,413.3		5,413.3		5,155.0
Net sales	1,209.7	1,120.9	2,307.1	2,114.7
Cost of sales	867.3	791.8	1,673.7	1,525.7
Selling, general and administrative expenses	248.2	240.8	488.0	458.8
Operating income (loss)	94.1	88.2	145.4	130.0
Depreciation and amortization	55.1	51.9	110.0	105.5
Capital expenditures (excluding acquisitions)	49.1	34.5	87.7	66.4
Operating segments | Global Ceramic | Ceramic & Stone
Segment Reporting [Line Items]
Net sales	1,191.6	1,101.5	2,273.1	2,077.5
Operating segments | Global Ceramic | Carpet & Resilient
Segment Reporting [Line Items]
Net sales	18.1	19.4	34.0	37.2
Operating segments | Global Ceramic | Laminate & Wood
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Global Ceramic | Other
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Global Ceramic | United States
Segment Reporting [Line Items]
Net sales	636.2	591.0	1,218.5	1,133.8
Operating segments | Global Ceramic | Europe
Segment Reporting [Line Items]
Net sales	340.3	318.4	639.0	572.6
Operating segments | Global Ceramic | Latin America
Segment Reporting [Line Items]
Net sales	187.3	167.4	359.2	320.9
Operating segments | Flooring NA
Segment Reporting [Line Items]
Assets	3,822.5		3,822.5		3,832.6
Net sales	976.1	946.8	1,856.1	1,809.2
Cost of sales	716.5	729.0	1,425.3	1,421.0
Selling, general and administrative expenses	161.8	165.4	329.3	326.5
Operating income (loss)	97.8	52.5	101.5	61.8
Depreciation and amortization	52.1	56.6	133.5	112.9
Capital expenditures (excluding acquisitions)	16.1	20.3	48.0	54.3
Operating segments | Flooring NA | Ceramic & Stone
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Flooring NA | Carpet & Resilient
Segment Reporting [Line Items]
Net sales	755.5	747.9	1,432.0	1,425.4
Operating segments | Flooring NA | Laminate & Wood
Segment Reporting [Line Items]
Net sales	220.6	198.9	424.1	383.8
Operating segments | Flooring NA | Other
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Flooring NA | United States
Segment Reporting [Line Items]
Net sales	952.2	924.2	1,805.9	1,759.7
Operating segments | Flooring NA | Europe
Segment Reporting [Line Items]
Net sales	0.7	1.3	1.9	1.7
Operating segments | Flooring NA | Latin America
Segment Reporting [Line Items]
Net sales	1.2	1.2	2.9	1.9
Operating segments | Flooring ROW
Segment Reporting [Line Items]
Assets	4,005.2		4,005.2		3,989.2
Net sales	805.6	734.4	1,556.9	1,404.0
Cost of sales	612.9	566.9	1,184.9	1,083.9
Selling, general and administrative expenses	114.1	101.7	222.8	195.6
Operating income (loss)	78.7	65.8	149.2	124.5
Depreciation and amortization	50.1	45.4	94.6	84.1
Capital expenditures (excluding acquisitions)	22.9	25.4	52.5	48.6
Operating segments | Flooring ROW | Ceramic & Stone
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating segments | Flooring ROW | Carpet & Resilient
Segment Reporting [Line Items]
Net sales	216.3	212.5	422.1	405.7
Operating segments | Flooring ROW | Laminate & Wood
Segment Reporting [Line Items]
Net sales	262.0	248.9	506.9	455.6
Operating segments | Flooring ROW | Other
Segment Reporting [Line Items]
Net sales	327.3	273.0	627.9	542.7
Operating segments | Flooring ROW | United States
Segment Reporting [Line Items]
Net sales	3.6	3.6	7.9	5.6
Operating segments | Flooring ROW | Europe
Segment Reporting [Line Items]
Net sales	644.2	560.4	1,233.3	1,080.0
Operating segments | Flooring ROW | Latin America
Segment Reporting [Line Items]
Net sales	12.1	9.9	23.0	18.4
Corporate and intersegment eliminations
Segment Reporting [Line Items]
Assets	582.2		582.2		$ 710.5
Cost of sales	(0.4)	0.0	(0.8)	(0.4)
Selling, general and administrative expenses	17.3	17.8	31.4	32.0
Depreciation and amortization	1.8	1.7	3.0	3.5
Capital expenditures (excluding acquisitions)	$ 0.3	$ 0.0	$ 2.4	$ 0.0