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Goodwill and intangible assets (Tables) | 9 Months Ended
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Sep. 28, 2019
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, 2018 |  |  |  |  |  |  |
Goodwill | $ | 1,564,987 |  |  | 874,198 |  |  | 1,409,206 |  |  | 3,848,391 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| 1,033,057 |  |  | 531,144 |  |  | 956,765 |  |  | 2,520,966 |
Goodwill recognized during the period | (1,758 | ) |  | — |  |  | 47,543 |  |  | 45,785 |
Currency translation during the period | (2,740 | ) |  | — |  |  | (44,797 | ) |  | (47,537 | )
Balance as of September 28, 2019 |  |  |  |  |  |  |
Goodwill | 1,560,489 |  |  | 874,198 |  |  | 1,411,952 |  |  | 3,846,639 |
Accumulated impairment losses | (531,930 | ) |  | (343,054 | ) |  | (452,441 | ) |  | (1,327,425 | )
| $ | 1,028,559 |  |  | 531,144 |  |  | 959,511 |  |  | 2,519,214 |
Schedule of indefinite life assets not subject to amortization | Intangible assets not subject to amortization:
| Tradenames
Balance as of December 31, 2018 | $ | 707,380 |
Intangible assets acquired during the period | (874 | )
Currency translation during the period | (16,718 | )
Balance as of September 28, 2019 | $ | 689,788 |
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, 2018 | $ | 651,012 |  |  | 254,483 |  |  | 6,535 |  |  | 912,030 |
Intangible assets recognized during the period | 2,092 |  |  | — |  |  | — |  |  | 2,092 |
Currency translation during the period | (20,143 | ) |  | (11,213 | ) |  | (173 | ) |  | (31,529 | )
Balance as of September 28, 2019 | $ | 632,961 |  |  | 243,270 |  |  | 6,362 |  |  | 882,593 |
Accumulated amortization: | Customer relationships |  | Patents |  | Other |  | Total
Balance as of December 31, 2018 | $ | 406,386 |  |  | 249,988 |  |  | 1,227 |  |  | 657,601 |
Amortization during the period | 19,027 |  |  | 1,606 |  |  | (37 | ) |  | 20,596 |
Currency translation during the period | (11,722 | ) |  | (11,028 | ) |  | (19 | ) |  | (22,769 | )
Balance as of September 28, 2019 | $ | 413,691 |  |  | 240,566 |  |  | 1,171 |  |  | 655,428 |
Intangible assets subject to amortization, net | $ | 219,270 |  |  | 2,704 |  |  | 5,191 |  |  | 227,165 |
Schedule of intangible assets amortization expense |
| Three Months Ended |  | Nine Months Ended
| September 28, 2019 |  | September 29, 2018 |  | September 28, 2019 |  | September 29, 2018
Amortization expense | $ | 6,912 |  |  | 8,148 |  |  | 20,596 |  |  | 23,198 |

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