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Goodwill and intangible assets - Schedule of goodwill (Details) $ in Thousands | 3 Months Ended
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Apr. 01, 2017 USD ($)
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | $ 3,601,851
Accumulated impairment losses | (1,327,425)
Goodwill, net, beginning balance | 2,274,426
Currency translation during the period | 18,681
Goodwill, gross, ending balance | 3,620,532
Accumulated impairment losses | (1,327,425)
Goodwill, net, ending balance | 2,293,107
Operating segments | Global Ceramic segment |
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | 1,482,226
Accumulated impairment losses | (531,930)
Goodwill, net, beginning balance | 950,296
Currency translation during the period | 7,790
Goodwill, gross, ending balance | 1,490,016
Accumulated impairment losses | (531,930)
Goodwill, net, ending balance | 958,086
Operating segments | Flooring NA segment |
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | 869,764
Accumulated impairment losses | (343,054)
Goodwill, net, beginning balance | 526,710
Currency translation during the period | 0
Goodwill, gross, ending balance | 869,764
Accumulated impairment losses | (343,054)
Goodwill, net, ending balance | 526,710
Operating segments | Flooring ROW segment |
Goodwill [Roll Forward] |
Goodwill, gross, beginning balance | 1,249,861
Accumulated impairment losses | (452,441)
Goodwill, net, beginning balance | 797,420
Currency translation during the period | 10,891
Goodwill, gross, ending balance | 1,260,752
Accumulated impairment losses | (452,441)
Goodwill, net, ending balance | $ 808,311

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