Goodwill and Other Intangible Assets - Narrative (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated amortization expense of intangible assets for 2014	$ 6.8
Estimated amortization expense of intangible assets for 2015	6.8
Estimated amortization expense of intangible assets for 2016	6.7
Estimated amortization expense of intangible assets for 2017	4.2
Estimated amortization expense of intangible assets for 2018	4.2
Estimated amortization expense of intangible assets for later years	$ 51.3