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Goodwill and intangible assets (Tables) | 6 Months Ended
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Jul. 01, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill |
| Global Ceramic segment |  | Flooring NA segment |  | Flooring ROW segment |  | Total
Balance as of December 31, 2016 |  |  |  |  |  |  |
Goodwill | $ | 1,482,226 |  |  | 869,764 |  |  | 1,249,861 |  |  | 3,601,851 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 950,296 |  |  | 526,710 |  |  | 797,420 |  |  | 2,274,426 |
Goodwill recognized or adjusted during the period | $ | 59,829 |  |  | — |  |  | — |  |  | 59,829 |
Currency translation during the period | $ | 14,348 |  |  | — |  |  | 68,455 |  |  | 82,803 |
Balance as of July 1, 2017 |  |  |  |  |  |  |
Goodwill | $ | 1,556,403 |  |  | 869,764 |  |  | 1,318,316 |  |  | 3,744,483 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 1,024,473 |  |  | 526,710 |  |  | 865,875 |  |  | 2,417,058 |
Schedule of indefinite life assets not subject to amortization |
| Tradenames
Balance as of December 31, 2016 | $ | 580,147 |
Intangible assets acquired during the period | 16,196 |
Currency translation during the period | 28,656 |
Balance as of July 1, 2017 | $ | 624,999 |
Schedule of intangible assets subject to amortization |
Gross carrying amounts: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2016 | $ | 569,980 |  |  | 234,022 |  |  | 6,330 |  |  | 810,332 |
Intangible assets recognized or adjusted during the period | 3,175 |  |  | — |  |  | — |  |  | 3,175 |
Currency translation during the period | 31,814 |  |  | 20,158 |  |  | 291 |  |  | 52,263 |
Balance as of July 1, 2017 | $ | 604,969 |  |  | 254,180 |  |  | 6,621 |  |  | 865,770 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2016 | $ | 334,276 |  |  | 220,598 |  |  | 999 |  |  | 555,873 |
Amortization during the period | 12,945 |  |  | 6,404 |  |  | 32 |  |  | 19,381 |
Currency translation during the period | 17,851 |  |  | 19,362 |  |  | 1 |  |  | 37,214 |
Balance as of July 1, 2017 | $ | 365,072 |  |  | 246,364 |  |  | 1,032 |  |  | 612,468 |
Intangible assets subject to amortization, net | $ | 239,897 |  |  | 7,816 |  |  | 5,589 |  |  | 253,302 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  | Six Months Ended
| July 1, 2017 |  | July 2, 2016 |  | July 1, 2017 |  | July 2, 2016
Amortization expense | $ | 9,322 |  |  | 9,494 |  |  | 19,381 |  |  | 19,058 |

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