Goodwill and Other Intangible Assets - Indefinite-lived Intangibles (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Unamortized Intangible Assets [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 100,400,000	$ 165,526,000
Finite-Lived Intangible Assets, Accumulated Amortization	1,200,739,000	1,048,278,000
Trademarks [Member]
Unamortized Intangible Assets [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	100,400,000	165,526,000
Finite-Lived Intangible Assets, Accumulated Amortization	$ 0	$ 0