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Goodwill and intangible assets (Tables) | 3 Months Ended
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Apr. 02, 2016
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, 2015 |  |  |  |  |  |  |
Goodwill | $ | 1,472,757 |  |  | 867,916 |  |  | 1,280,117 |  |  | 3,620,790 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 940,827 |  |  | 524,862 |  |  | 827,676 |  |  | 2,293,365 |
Goodwill recognized or adjusted during the period | $ | — |  |  | 1,848 |  |  | 63 |  |  | 1,911 |
Currency translation during the period | 9,643 |  |  | — |  |  | 34,602 |  |  | 44,245 |
Balance as of April 2, 2016 |  |  |  |  |  |  |
Goodwill | 1,482,400 |  |  | 869,764 |  |  | 1,314,782 |  |  | 3,666,946 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 950,470 |  |  | 526,710 |  |  | 862,341 |  |  | 2,339,521 |
Schedule of indefinite life assets not subject to amortization | Intangible assets not subject to amortization:
| Tradenames
Balance as of December 31, 2015 | $ | 632,349 |
Currency translation during the period | 16,753 |
Balance as of April 2, 2016 | $ | 649,102 |
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, 2015 | $ | 588,716 |  |  | 243,258 |  |  | 6,790 |  |  | 838,764 |
Intangible assets recognized or adjusted during the period | — |  |  | — |  |  | — |  |  | — |
Currency translation during the period | 13,825 |  |  | 10,217 |  |  | (431 | ) |  | 23,611 |
Balance as of April 2, 2016 | $ | 602,541 |  |  | 253,475 |  |  | 6,359 |  |  | 862,375 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2015 | $ | 317,593 |  |  | 216,273 |  |  | 706 |  |  | 534,572 |
Amortization during the period | 6,744 |  |  | 2,810 |  |  | 10 |  |  | 9,564 |
Currency translation during the period | 7,225 |  |  | 9,165 |  |  | (24 | ) |  | 16,366 |
Balance as of April 2, 2016 | $ | 331,562 |  |  | 228,248 |  |  | 692 |  |  | 560,502 |
Intangible assets subject to amortization, net | $ | 270,979 |  |  | 25,227 |  |  | 5,667 |  |  | 301,873 |
Schedule of intangible assets amortization expense |
| Three Months Ended
| April 2, 2016 |  | April 4, 2015
Amortization expense | $ | 9,564 |  |  | 5,106 |

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