Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Operating leases
Other assets	$ 157.9	$ 53.8
Operating Lease Liabilities, Gross Difference, Amount [Abstract]
Accrued liabilities	$ 57.4	$ 17.1
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Other liabilities	$ 101.8	$ 41.0
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Total operating lease liabilities	$ 159.2	$ 58.1
Finance Leases
Property, plant and equipment	15.7	16.9
Finance Lease Liabilities, Gross Difference, Amount [Abstract]
Short-term borrowings and current maturities of long-term debt	0.7	0.7
Long-term debt, less current maturities	16.5	17.2
Total finance lease liabilities	$ 17.2	$ 17.9
Weighted Average Remaining Lease Term (in years)
Operating leases, weighted average remaining lease term	4 years 4 months 24 days	4 years 6 months
Finance leases, weighted average remaining lease term	13 years 2 months 12 days	13 years 7 months 6 days
Weighted Average Discount Rate
Operating leases (as a percent)	2.00%	2.30%
Finance leases (as a percent)	6.40%	6.30%