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Goodwill and intangible assets (Tables) | 9 Months Ended
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Sep. 29, 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 | $ | — |  |  | 5,184 |  |  | 96,000 |  |  | 101,184 |
Currency translation during the period | $ | (15,842 | ) |  | — |  |  | (34,662 | ) |  | (50,504 | )
Balance as of September 29, 2018 |  |  |  |  |  |  |
Goodwill | $ | 1,552,030 |  |  | 874,948 |  |  | 1,422,586 |  |  | 3,849,564 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 1,020,100 |  |  | 531,894 |  |  | 970,145 |  |  | 2,522,139 |
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 | 58,671 |
Currency translation during the period | (19,531 | )
Balance as of September 29, 2018 | $ | 683,348 |
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 | 43,635 |  |  | — |  |  | 7 |  |  | 43,642 |
Currency translation during the period | (15,102 | ) |  | (8,889 | ) |  | (183 | ) |  | (24,174 | )
Balance as of September 29, 2018 | $ | 653,796 |  |  | 258,080 |  |  | 6,649 |  |  | 918,525 |
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 | 21,429 |  |  | 1,713 |  |  | 56 |  |  | 23,198 |
Currency translation during the period | (8,798 | ) |  | (8,673 | ) |  | (13 | ) |  | (17,484 | )
Balance as of September 29, 2018 | $ | 403,059 |  |  | 252,948 |  |  | 1,205 |  |  | 657,212 |
Intangible assets subject to amortization, net | $ | 250,737 |  |  | 5,132 |  |  | 5,444 |  |  | 261,313 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  | Nine Months Ended
| September 29, 2018 |  | September 30, 2017 |  | September 29, 2018 |  | September 30, 2017
Amortization expense | $ | 8,148 |  |  | 7,421 |  |  | 23,198 |  |  | 26,802 |

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