Nature of Business and Summary of Significant Accounting Policies - Finite-lived Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 746.7	$ 694.9
Accumulated amortization	(360.0)	(309.3)
Net carrying amount	386.7	385.6
Amortization	52.9	48.4	$ 44.9
Future Amortization Expense, 2016	46.0
Future Amortization Expense, 2017	43.0
Future Amortization Expense, 2018	40.0
Future Amortization Expense, 2019	40.0
Future Amortization Expense, 2020	40.0
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	627.2	579.5
Accumulated amortization	(269.0)	(226.1)
Net carrying amount	358.2	353.4
Patents, Trademarks and Licenses
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	119.5	115.4
Accumulated amortization	(91.0)	(83.2)
Net carrying amount	$ 28.5	$ 32.2