Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Lease Cost [Abstract]
Operating lease cost	$ 15.2	$ 15.5
Short-term lease cost	0.1	1.1
Total	15.3	16.6
Operating cash flows information [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	15.7
Non-cash activity [Abstract]
Right-of-use assets obtained in the exchange for operating lease liabilities	$ 18.1
Weighted Average Remaining Lease Term and Discount Rates [Abstract]
Weighted-average remaining operating lease term	7 years 8 months 15 days
Weighted-average operating leases discount rate	5.00%
Outstanding Lease Assets and Liabilities [Abstract]
Right-of-use asset	$ 50.9	$ 44.8
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Lease liability - current	$ 11.7	$ 11.9
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent
Lease liability - non-current	$ 49.2	$ 43.3
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Future Minimum Lease Payments [Abstract]
2021	$ 14.4
2022	12.1
2023	9.5
2024	7.6
2025	6.4
Thereafter	24.0
Total future minimum lease payments	74.0
Less imputed interest	(13.1)
Total	$ 60.9
Rent Expense [Abstract]
Rent expense			$ 19.5
Minimum [Member]
Leases [Abstract]
Remaining lease term	1 year
Maximum [Member]
Leases [Abstract]
Remaining lease term	50 years