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Goodwill and intangible assets (Tables) | 9 Months Ended
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Sep. 30, 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 | $ | 60,493 |  |  | — |  |  | — |  |  | 60,493 |
Currency translation during the period | $ | 21,952 |  |  | — |  |  | 97,489 |  |  | 119,441 |
Balance as of September 30, 2017 |  |  |  |  |  |  |
Goodwill | $ | 1,564,671 |  |  | 869,764 |  |  | 1,347,350 |  |  | 3,781,785 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 1,032,741 |  |  | 526,710 |  |  | 894,909 |  |  | 2,454,360 |
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 | 41,725 |
Balance as of September 30, 2017 | $ | 638,068 |
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 | 45,597 |  |  | 28,778 |  |  | 442 |  |  | 74,817 |
Balance as of September 30, 2017 | $ | 618,752 |  |  | 262,800 |  |  | 6,772 |  |  | 888,324 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2016 | $ | 334,276 |  |  | 220,598 |  |  | 999 |  |  | 555,873 |
Amortization during the period | 19,710 |  |  | 6,970 |  |  | 122 |  |  | 26,802 |
Currency translation during the period | 25,689 |  |  | 27,706 |  |  | 24 |  |  | 53,419 |
Balance as of September 30, 2017 | $ | 379,675 |  |  | 255,274 |  |  | 1,145 |  |  | 636,094 |
Intangible assets subject to amortization, net | $ | 239,077 |  |  | 7,526 |  |  | 5,627 |  |  | 252,230 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  | Nine Months Ended
| September 30, 2017 |  | October 1, 2016 |  | September 30, 2017 |  | October 1, 2016
Amortization expense | $ | 7,421 |  |  | 10,381 |  |  | 26,802 |  |  | 29,439 |

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