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Goodwill and intangible assets (Tables) | 6 Months Ended
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Jul. 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 |  |  | 1,158 |  |  | 3,006 |
Currency translation during the period | 10,940 |  |  | — |  |  | 15,424 |  |  | 26,364 |
Balance as of July 2, 2016 |  |  |  |  |  |  |
Goodwill | 1,483,697 |  |  | 869,764 |  |  | 1,296,699 |  |  | 3,650,160 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 951,767 |  |  | 526,710 |  |  | 844,258 |  |  | 2,322,735 |
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 | 11,413 |
Balance as of July 2, 2016 | $ | 643,762 |
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 | 3,566 |  |  | 4,580 |  |  | (726 | ) |  | 7,420 |
Balance as of July 2, 2016 | $ | 592,282 |  |  | 247,838 |  |  | 6,064 |  |  | 846,184 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2015 | $ | 317,593 |  |  | 216,273 |  |  | 706 |  |  | 534,572 |
Amortization during the period | 13,419 |  |  | 5,623 |  |  | 16 |  |  | 19,058 |
Currency translation during the period | 2,126 |  |  | 4,064 |  |  | (197 | ) |  | 5,993 |
Balance as of July 2, 2016 | $ | 333,138 |  |  | 225,960 |  |  | 525 |  |  | 559,623 |
Intangible assets subject to amortization, net | $ | 259,144 |  |  | 21,878 |  |  | 5,539 |  |  | 286,561 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  | Six Months Ended
| July 2, 2016 |  | July 4, 2015 |  | July 2, 2016 |  | July 4, 2015
Amortization expense | $ | 9,494 |  |  | 6,264 |  |  | 19,058 |  |  | 11,370 |

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