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Segment Reporting (Summary of segment information) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 USD ($) | Sep. 29, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jul. 01, 2017 USD ($) | Apr. 01, 2017 USD ($) | Dec. 31, 2018 USD ($) segment | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of reporting segments | segment |  |  |  |  |  |  |  |  | 3 |  |
Assets | $ 13,099,123 |  |  |  | $ 12,094,853 |  |  |  | $ 13,099,123 | $ 12,094,853 | $ 10,230,596
Net sales | 2,448,618 | $ 2,545,800 | $ 2,577,014 | $ 2,412,202 | 2,369,097 | $ 2,448,510 | $ 2,453,038 | $ 2,220,645 | 9,983,634 | 9,491,290 | 8,959,087
Long-lived assets | 7,220,869 |  |  |  | 6,742,249 |  |  |  | 7,220,869 | 6,742,249 | 5,644,774
Operating income (loss) |  |  |  |  |  |  |  |  | 1,095,326 | 1,354,173 | 1,279,943
Depreciation and amortization |  |  |  |  |  |  |  |  | 521,765 | 446,672 | 409,467
Capital expenditures (excluding acquisitions) |  |  |  |  |  |  |  |  | 794,110 | 905,998 | 672,125
Ceramic & Stone |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,621,193 | 3,485,245 | 3,258,137
Carpet & Resilient |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,903,698 | 3,655,902 | 3,412,846
Laminate & Wood |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,553,032 | 1,519,417 | 1,493,995
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 905,711 | 830,726 | 794,109
United States |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 6,103,789 | 6,035,200 | 5,842,165
Long-lived assets | 3,485,046 |  |  |  | 3,339,363 |  |  |  | 3,485,046 | 3,339,363 | 3,092,902
Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,582,692 | 2,363,069 | 2,113,972
Russia |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 349,220 | 326,075 | 255,736
Belgium |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 1,663,470 |  |  |  | 1,705,947 |  |  |  | 1,663,470 | 1,705,947 | 1,371,397
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 947,933 | 766,946 | 747,214
Long-lived assets | 2,072,353 |  |  |  | 1,696,939 |  |  |  | 2,072,353 | 1,696,939 | 1,180,475
Operating segments | Global Ceramic |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets | 5,194,030 |  |  |  | 4,838,310 |  |  |  | 5,194,030 | 4,838,310 | 4,024,859
Net sales |  |  |  |  |  |  |  |  | 3,552,856 | 3,405,100 | 3,174,706
Operating income (loss) |  |  |  |  |  |  |  |  | 442,898 | 525,401 | 478,448
Depreciation and amortization |  |  |  |  |  |  |  |  | 189,904 | 161,913 | 135,370
Capital expenditures (excluding acquisitions) |  |  |  |  |  |  |  |  | 281,125 | 310,650 | 263,401
Operating segments | Global Ceramic | Ceramic & Stone |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,552,856 | 3,405,100 | 3,174,706
Operating segments | Global Ceramic | Carpet & Resilient |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating segments | Global Ceramic | Laminate & Wood |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating segments | Global Ceramic | Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating segments | Global Ceramic | Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 714,315 | 645,341 | 533,339
Operating segments | Global Ceramic | Russia |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 245,867 | 235,043 | 180,420
Operating segments | Flooring NA |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets | 3,938,639 |  |  |  | 3,702,137 |  |  |  | 3,938,639 | 3,702,137 | 3,410,856
Net sales |  |  |  |  |  |  |  |  | 4,029,148 | 4,010,858 | 3,865,746
Operating income (loss) |  |  |  |  |  |  |  |  | 347,937 | 540,337 | 505,115
Depreciation and amortization |  |  |  |  |  |  |  |  | 184,455 | 159,980 | 148,067
Capital expenditures (excluding acquisitions) |  |  |  |  |  |  |  |  | 262,676 | 355,941 | 248,843
Operating segments | Flooring NA | Ceramic & Stone |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 68,337 | 80,145 | 83,431
Operating segments | Flooring NA | Carpet & Resilient |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,258,029 | 3,219,971 | 3,042,729
Operating segments | Flooring NA | Laminate & Wood |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 702,782 | 710,742 | 739,586
Operating segments | Flooring NA | Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating segments | Flooring NA | Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 6,487 | 19,100 | 15,628
Operating segments | Flooring NA | Russia |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2 | (1) | 12
Operating segments | Flooring ROW |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets | 3,666,617 |  |  |  | 3,245,424 |  |  |  | 3,666,617 | 3,245,424 | 2,689,592
Net sales |  |  |  |  |  |  |  |  | 2,401,630 | 2,075,452 | 1,918,635
Operating income (loss) |  |  |  |  |  |  |  |  | 345,801 | 329,054 | 333,091
Depreciation and amortization |  |  |  |  |  |  |  |  | 135,350 | 114,794 | 116,048
Capital expenditures (excluding acquisitions) |  |  |  |  |  |  |  |  | 232,949 | 221,763 | 144,207
Operating segments | Flooring ROW | Ceramic & Stone |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating segments | Flooring ROW | Carpet & Resilient |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 645,669 | 435,931 | 370,117
Operating segments | Flooring ROW | Laminate & Wood |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 850,250 | 808,675 | 754,409
Operating segments | Flooring ROW | Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 905,711 | 830,846 | 794,109
Operating segments | Flooring ROW | Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,861,890 | 1,698,628 | 1,565,005
Operating segments | Flooring ROW | Russia |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 103,351 | 91,033 | 75,304
Corporate and intersegment eliminations |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets | $ 299,837 |  |  |  | $ 308,982 |  |  |  | 299,837 | 308,982 | 105,289
Operating income (loss) |  |  |  |  |  |  |  |  | (41,310) | (40,619) | (36,711)
Intersegment sales |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | (120) | 0
Intersegment sales | Ceramic & Stone |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment sales | Carpet & Resilient |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment sales | Laminate & Wood |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment sales | Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | (120) | 0
Intersegment sales | Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment sales | Russia |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 12,056 | 9,985 | 9,982
Capital expenditures (excluding acquisitions) |  |  |  |  |  |  |  |  | $ 17,360 | $ 17,644 | $ 15,674

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