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Goodwill and intangible assets (Tables) | 3 Months Ended
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Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | The components of goodwill and other intangible assets are as follows: Goodwill:
| Global Ceramic segment |  | Flooring NA segment |  | Flooring ROW segment |  | Total
Balance as of December 31, 2017 |  |  |  |  |  |  |
Goodwill | $ | 1,567,872 |  |  | 869,764 |  |  | 1,361,248 |  |  | 3,798,884 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 1,035,942 |  |  | 526,710 |  |  | 908,807 |  |  | 2,471,459 |
Goodwill recognized during the period | $ | — |  |  | — |  |  | 12,548 |  |  | 12,548 |
Currency translation during the period | $ | 5,100 |  |  | — |  |  | 23,508 |  |  | 28,608 |
Balance as of March 31, 2018 |  |  |  |  |  |  |
Goodwill | $ | 1,572,972 |  |  | 869,764 |  |  | 1,397,304 |  |  | 3,840,040 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 1,041,042 |  |  | 526,710 |  |  | 944,863 |  |  | 2,512,615 |
Schedule of indefinite life assets not subject to amortization | Intangible assets not subject to amortization:
| Tradenames
Balance as of December 31, 2017 | $ | 644,208 |
Intangible assets acquired during the period | — |
Currency translation during the period | 10,141 |
Balance as of March 31, 2018 | $ | 654,349 |
Schedule of intangible assets subject to amortization | Intangible assets subject to amortization:
Gross carrying amounts: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2017 | $ | 625,263 |  |  | 266,969 |  |  | 6,825 |  |  | 899,057 |
Intangible assets recognized during the period | — |  |  | — |  |  | 7 |  |  | 7 |
Currency translation during the period | 11,865 |  |  | 7,082 |  |  | 179 |  |  | 19,126 |
Balance as of March 31, 2018 | $ | 637,128 |  |  | 274,051 |  |  | 7,011 |  |  | 918,190 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2017 | $ | 390,428 |  |  | 259,908 |  |  | 1,162 |  |  | 651,498 |
Amortization during the period | 6,975 |  |  | 583 |  |  | 9 |  |  | 7,567 |
Currency translation during the period | 6,577 |  |  | 6,898 |  |  | 10 |  |  | 13,485 |
Balance as of March 31, 2018 | $ | 403,980 |  |  | 267,389 |  |  | 1,181 |  |  | 672,550 |
Intangible assets subject to amortization, net | $ | 233,148 |  |  | 6,662 |  |  | 5,830 |  |  | 245,640 |
Schedule of intangible assets amortization expense |
| Three Months Ended
| March 31, 2018 |  | April 1, 2017
Amortization expense | $ | 7,567 |  |  | 10,059 |

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