Fair Value of Financial Instruments - Hierarchy (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Significant Other Observable Inputs (Level 2)
Liabilities:
Fair value of long-term fixed interest rate debt	$ 253.3	$ 252.1
Recurring basis
Assets:
Embedded derivatives in purchase and delivery contracts	4.0	0.5
Fixed price commodity contracts	0.2
Total assets recorded at fair value	4.2	0.5
Liabilities:
Contingent consideration	16.6	4.6
Foreign exchange contracts	1.4	1.3
Embedded derivatives in purchase and delivery contracts	0.3	0.5
Fixed price commodity contracts		0.4
Total liabilities recorded at fair value	18.3	6.8
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Embedded derivatives in purchase and delivery contracts	4.0	0.5
Fixed price commodity contracts	0.2
Total assets recorded at fair value	4.2	0.5
Liabilities:
Foreign exchange contracts	1.4	1.3
Embedded derivatives in purchase and delivery contracts	0.3	0.5
Fixed price commodity contracts		0.4
Total liabilities recorded at fair value	1.7	2.2
Recurring basis | Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent consideration	16.6	4.6
Total liabilities recorded at fair value	$ 16.6	$ 4.6