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Goodwill and intangible assets (Tables) | 9 Months Ended
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Sep. 26, 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 | (17,997) |  |  | — |  |  | 32,253 |  |  | 14,256 |
Balance as of September 26, 2020 |  |  |  |  |  |  |
Goodwill | 1,565,579 |  |  | 874,198 |  |  | 1,462,289 |  |  | 3,902,066 |
Accumulated impairment losses | (531,930) |  |  | (343,054) |  |  | (452,441) |  |  | (1,327,425) |
| $ | 1,033,649 |  |  | 531,144 |  |  | 1,009,848 |  |  | 2,574,641 |
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 | (4,166) |
Balance as of September 26, 2020 | $ | 698,566 |
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 | 12,622 |  |  | 9,548 |  |  | (27) |  |  | 22,143 |
Balance as of September 26, 2020 | $ | 670,617 |  |  | 258,648 |  |  | 6,604 |  |  | 935,869 |
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 | 19,531 |  |  | 1,595 |  |  | 57 |  |  | 21,183 |
Currency translation during the period | 10,173 |  |  | 9,495 |  |  | 16 |  |  | 19,684 |
Balance as of September 26, 2020 | $ | 456,469 |  |  | 257,962 |  |  | 1,226 |  |  | 715,657 |
Intangible assets subject to amortization, net | $ | 214,148 |  |  | 686 |  |  | 5,378 |  |  | 220,212 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  | Nine Months Ended
| September 26, 2020 |  | September 28, 2019 |  | September 26, 2020 |  | September 28, 2019
Amortization expense | $ | 7,327 |  |  | 6,912 |  |  | 21,183 |  |  | 20,596 |

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