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Goodwill and intangible assets (Tables) | 3 Months Ended
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Apr. 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 |
Currency translation during the period | $ | 7,790 |  |  | — |  |  | 10,891 |  |  | 18,681 |
Balance as of April 1, 2017 |  |  |  |  |  |  |
Goodwill | 1,490,016 |  |  | 869,764 |  |  | 1,260,752 |  |  | 3,620,532 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 958,086 |  |  | 526,710 |  |  | 808,311 |  |  | 2,293,107 |
Schedule of indefinite life assets not subject to amortization |
| Tradenames
Balance as of December 31, 2016 | $ | 580,147 |
Intangible assets impaired during the period | — |
Currency translation during the period | 7,850 |
Balance as of April 1, 2017 | $ | 587,997 |
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 | 827 |  |  | — |  |  | — |  |  | 827 |
Currency translation during the period | 5,049 |  |  | 3,020 |  |  | 73 |  |  | 8,142 |
Balance as of April 1, 2017 | $ | 575,856 |  |  | 237,042 |  |  | 6,403 |  |  | 819,301 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2016 | $ | 334,276 |  |  | 220,598 |  |  | 999 |  |  | 555,873 |
Amortization during the period | 6,397 |  |  | 3,652 |  |  | 10 |  |  | 10,059 |
Currency translation during the period | 2,762 |  |  | 2,841 |  |  | 2 |  |  | 5,605 |
Balance as of April 1, 2017 | $ | 343,435 |  |  | 227,091 |  |  | 1,011 |  |  | 571,537 |
Intangible assets subject to amortization, net | $ | 232,421 |  |  | 9,951 |  |  | 5,392 |  |  | 247,764 |
Schedule of intangible assets amortization expense |
| Three Months Ended
| April 1, 2017 |  | April 2, 2016
Amortization expense | $ | 10,059 |  |  | 9,564 |

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