Goodwill and Other Intangible Assets - Narrative (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated amortization expense of intangible assets for the remainder of 2014	$ 2.3
Estimated amortization expense of intangible assets for 2015	9.0
Estimated amortization expense of intangible assets for 2016	8.9
Estimated amortization expense of intangible assets for 2017	6.5
Estimated amortization expense of intangible assets for 2018	6.4
Estimated amortization expense of intangible assets for 2019	5.5
Estimated amortization expense of intangible assets for later years	$ 61.4