Financial Instruments (Details 2) - Fair value measured on a recurring basis - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value Measurements at Reporting Date
Financial assets, cash flow hedges	$ 0.0
Assets
Plan asset for deferred compensation	3.3	$ 4.0
Total assets	3.3	4.0
Liabilities
Plan liability for deferred compensation	3.3	4.0
Contingent consideration		2.5
Redeemable financial instrument	5.7
Total liabilities	9.0	6.5
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Plan asset for deferred compensation	3.3	4.0
Total assets	3.3	4.0
Liabilities
Plan liability for deferred compensation	3.3	4.0
Total liabilities	3.3	4.0
Significant Unobservable Inputs (Level 3)
Liabilities
Contingent consideration		2.5
Redeemable financial instrument	5.7
Total liabilities	$ 5.7	$ 2.5