Goodwill and Other Intangible Assets (Schedule of indefinite life assets not subject to amortization) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Oct. 01, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets impaired during the year		$ 0	$ (47,905)	$ 0
Tradenames
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite life assets not subject to amortization, beginning balance		580,147	632,349
Intangible assets impaired during the year		0	(47,905)
Intangible assets acquired during the year		16,196
Currency translation during the year		47,865	(4,297)
Indefinite life assets not subject to amortization, ending balance		$ 644,208	$ 580,147	$ 632,349
Selling, general and administrative expenses | Tradenames
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets impaired during the year	$ (47,905)