Commitments, Contingencies and Guarantees (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Contingencies [Line Items]
Valuation allowance	$ (340.9)	$ (10.2)
Valuation Allowance, Deferred Tax Asset, Change in Amount	110.1	(3.2)	$ (2.2)
Service warranty roll forward
Charges to costs and expenses	3.3	(13.9)	3.2
Product Warranty Accrual, Payments	(1.9)	(1.7)	(1.2)
Write-offs, net of recoveries		(25.0)	(63.8)
Standard and Extended Product Warranty Accrual, Additions from Business Acquisition	10.3
Exchange rate	0.5	0.5	0.2
Product Warranty And Extraordinary Rework, Ending Balance	76.9	64.7	104.8
Commitments Contingencies And Guarantees Textuals [Abstract]
Capital Commitments	103.8	119.9
Outstanding Amount Of Guarantees	19.6	21.5
Restricted Cash and Investments, Noncurrent	19.5	16.4	$ 20.2	$ 20.0
Product Liability Accrual, Component Amount	8.1
Product Liability Contingency, Loss Exposure in Excess of Accrual, Best Estimate	12.1
Industrial Revenue Bond [Member]
Commitments Contingencies And Guarantees Textuals [Abstract]
Tax Exempt Bonds	$ 380.2	$ 376.2