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Goodwill and intangible assets (Tables) | 6 Months Ended
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Jun. 27, 2020
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, 2019 |  |  |  |  |  |  |
Goodwill | $ | 1,583,576 |  |  | 874,198 |  |  | 1,439,678 |  |  | 3,897,452 |
Accumulated impairment losses | (531,930) |  |  | (343,054) |  |  | (452,441) |  |  | (1,327,425) |
| 1,051,646 |  |  | 531,144 |  |  | 987,237 |  |  | 2,570,027 |
Goodwill recognized during the period | — |  |  | — |  |  | (9,642) |  |  | (9,642) |
Currency translation during the period | (16,538) |  |  | — |  |  | (1,941) |  |  | (18,479) |
Balance as of June 27, 2020 |  |  |  |  |  |  |
Goodwill | 1,567,038 |  |  | 874,198 |  |  | 1,428,095 |  |  | 3,869,331 |
Accumulated impairment losses | (531,930) |  |  | (343,054) |  |  | (452,441) |  |  | (1,327,425) |
| $ | 1,035,108 |  |  | 531,144 |  |  | 975,654 |  |  | 2,541,906 |
Schedule of indefinite life assets not subject to amortization | Intangible assets not subject to amortization:
| Tradenames
Balance as of December 31, 2019 | $ | 702,732 |
Currency translation during the period | (13,508) |
Balance as of June 27, 2020 | $ | 689,224 |
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, 2019 | $ | 645,206 |  |  | 249,100 |  |  | 6,631 |  |  | 900,937 |
Intangible assets recognized during the period | 12,789 |  |  | — |  |  | — |  |  | 12,789 |
Currency translation during the period | (3,214) |  |  | 419 |  |  | (195) |  |  | (2,990) |
Balance as of June 27, 2020 | $ | 654,781 |  |  | 249,519 |  |  | 6,436 |  |  | 910,736 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2019 | $ | 426,765 |  |  | 246,872 |  |  | 1,153 |  |  | 674,790 |
Amortization during the period | 12,774 |  |  | 1,037 |  |  | 45 |  |  | 13,856 |
Currency translation during the period | 46 |  |  | 434 |  |  | (4) |  |  | 476 |
Balance as of June 27, 2020 | $ | 439,585 |  |  | 248,343 |  |  | 1,194 |  |  | 689,122 |
Intangible assets subject to amortization, net | $ | 215,196 |  |  | 1,176 |  |  | 5,242 |  |  | 221,614 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  |  |  | Six Months Ended |  |
| June 27, 2020 |  | June 29, 2019 |  | June 27, 2020 |  | June 29, 2019
Amortization expense | $ | 6,980 |  |  | 6,955 |  |  | 13,856 |  |  | 13,684 |

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