Fair Value of Financial Instruments - Hierarchy (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Significant Other Observable Inputs (Level 2)
Liabilities:
Fair value of long-term fixed interest rate debt	$ 517.4	$ 228.8
Recurring basis
Assets:
Interest rate and cross currency swap agreements	10.1
Foreign exchange contracts	0.9	0.2
Embedded derivatives in purchase and delivery contracts	0.1
Fixed price commodity contracts	0.3	0.4
Total assets recorded at fair value	11.4	0.6
Liabilities:
Contingent consideration	15.8	15.1
Hybrid instrument liability	10.6	12.9
Interest rate and cross currency swap agreements	16.9
Foreign exchange contracts	0.4	2.8
Embedded derivatives in purchase and delivery contracts	0.6	0.9
Fixed price commodity contracts		0.5
Total liabilities recorded at fair value	44.3	32.2
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Interest rate and cross currency swap agreements	10.1
Foreign exchange contracts	0.9	0.2
Embedded derivatives in purchase and delivery contracts	0.1
Fixed price commodity contracts	0.3	0.4
Total assets recorded at fair value	11.4	0.6
Liabilities:
Interest rate and cross currency swap agreements	16.9
Foreign exchange contracts	0.4	2.8
Embedded derivatives in purchase and delivery contracts	0.6	0.9
Fixed price commodity contracts		0.5
Total liabilities recorded at fair value	17.9	4.2
Recurring basis | Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent consideration	15.8	15.1
Hybrid instrument liability	10.6	12.9
Total liabilities recorded at fair value	$ 26.4	$ 28.0