Revenue Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 9.4	$ 10.5
Contract with Customer, Liability	69.1	66.4
Contract with Customer, Liability, Revenue Recognized	66.6
Contract with Customer, Liability, Noncurrent	12.5	$ 14.0
Revenue, Remaining Performance Obligation, Amount	$ 235.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Remaining performance obligation, expected timing of satisfaction, percent	74.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year