Commitments and Contingencies (Future Minimum Lease Payments) (Details) $ in Millions		12 Months Ended
	Mar. 01, 2019 USD ($) ft²	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Finance Lease, Right-of-Use Asset, Amortization		$ 11.9	$ 10.3
Finance Lease, Interest Expense		0.5	0.7
Operating Lease, Cost		62.2	62.7
Short-term Lease, Cost		3.8	4.0
Variable Lease, Cost		21.6	20.3
Lease, Cost		100.0	98.0
Finance Lease, Right-of-Use Asset		34.5	33.6
Right-of-use assets from operating leases		196.1	194.4
Finance lease obligations		11.3	10.1
Finance Lease, Liability, Noncurrent		29.0	29.3
Current operating lease liabilities		54.8	55.0
Long-term operating lease liabilities		$ 145.0	$ 142.8
Finance Lease, Weighted Average Remaining Lease Term		3 years 10 months 24 days	4 years 3 months 18 days
Operating Lease, Weighted Average Remaining Lease Term		4 years 6 months	4 years 4 months 24 days
Finance Lease, Weighted Average Discount Rate, Percent		1.14%	1.91%
Operating Lease, Weighted Average Discount Rate, Percent		2.62%	2.81%
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Total property, plant and equipment, net	Total property, plant and equipment, net
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Long-term Debt and Lease Obligation, Current	Long-term Debt and Lease Obligation, Current
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Total long-term debt	Total long-term debt
Operating Lease, Payments		$ 61.8	$ 61.6
Finance Lease, Principal Payments		12.3	10.8
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability		14.6	15.4
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		61.8	$ 67.6
Area of Leased Office Building | ft²	192,000
Purchase Price of Property at End of Lease Term	$ 41.2
Percentage of Lease Balance as Final Payment End of Lease Term	87.00%
Operating Leases
2022		59.6
2023		54.9
2024		36.9
2025		23.1
2026		16.9
Thereafter		19.9
Total minimum lease payments		211.3
Less imputed interest		(11.5)
Present value of minimum payments		199.8
Finance Leases
2022		11.7
2023		8.7
2024		5.2
2025		2.9
2026		0.7
Thereafter		11.7
Total minimum lease payments		40.9
Less imputed interest		(0.6)
Present value of minimum payments		$ 40.3