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Goodwill and Other Intangible Assets (Schedule of goodwill) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Goodwill [Line Items] |  |  |
Goodwill, impairment loss | $ 0 |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 3,601,851,000 | $ 3,620,790,000 |
Accumulated impairments losses, beginning balance | (1,327,425,000) | (1,327,425,000) |
Goodwill | 2,471,459,000 | 2,274,426,000 | $ 2,293,365,000
Goodwill recognized during the year |  | 60,493,000 | 3,006,000
Currency translation during the year |  | 136,540,000 | (21,945,000)
Goodwill, ending balance | 3,798,884,000 | 3,601,851,000 | 3,620,790,000
Accumulated impairments losses, ending balance | (1,327,425,000) | (1,327,425,000) | (1,327,425,000)
Goodwill, net, ending balance | 2,471,459,000 | 2,274,426,000 | 2,293,365,000
Operating segments | Global Ceramic |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 1,482,226,000 | 1,472,757,000 |
Accumulated impairments losses, beginning balance | (531,930,000) | (531,930,000) |
Goodwill | 1,035,942,000 | 950,296,000 | 940,827,000
Goodwill recognized during the year |  | 60,493,000 | 0
Currency translation during the year |  | 25,153,000 | 9,469,000
Goodwill, ending balance | 1,567,872,000 | 1,482,226,000 | 1,472,757,000
Accumulated impairments losses, ending balance | (531,930,000) | (531,930,000) | (531,930,000)
Goodwill, net, ending balance | 1,035,942,000 | 950,296,000 | 940,827,000
Operating segments | Flooring NA |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 869,764,000 | 867,916,000 |
Accumulated impairments losses, beginning balance | (343,054,000) | (343,054,000) |
Goodwill | 526,710,000 | 526,710,000 | 524,862,000
Goodwill recognized during the year |  | 0 | 1,848,000
Currency translation during the year |  | 0 | 0
Goodwill, ending balance | 869,764,000 | 869,764,000 | 867,916,000
Accumulated impairments losses, ending balance | (343,054,000) | (343,054,000) | (343,054,000)
Goodwill, net, ending balance | 526,710,000 | 526,710,000 | 524,862,000
Operating segments | Flooring ROW |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 1,249,861,000 | 1,280,117,000 |
Accumulated impairments losses, beginning balance | (452,441,000) | (452,441,000) |
Goodwill | 908,807,000 | 797,420,000 | 827,676,000
Goodwill recognized during the year |  | 0 | 1,158,000
Currency translation during the year |  | 111,387,000 | (31,414,000)
Goodwill, ending balance | 1,361,248,000 | 1,249,861,000 | 1,280,117,000
Accumulated impairments losses, ending balance | (452,441,000) | (452,441,000) | (452,441,000)
Goodwill, net, ending balance | $ 908,807,000 | $ 797,420,000 | $ 827,676,000

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