Goodwill and Other Intangible Assets (Schedule of Expected Future Amortization Expense) (Details) $ in Millions	Dec. 31, 2014 USD ($)
Amortization Expense
Intangible assets, expected future amortization expense, 2015	$ 29.8
Intangible assets, expected future amortization expense, 2016	21.5
Intangible assets, expected future amortization expense, 2017	16.9
Intangible assets, expected future amortization expense, 2018	13.1
Intangible assets, expected future amortization expense, 2019	8.7
Intangible assets, expected future amortization expense, thereafter	32.3
Intangible assets, expected future amortization expense, total	$ 122.3