Revenues from Contracts (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Net revenues	$ 1,528.6	$ 1,350.7
Software and related services
Disaggregation of Revenue [Line Items]
Net revenues	864.5	668.5
Engineered products and related services
Disaggregation of Revenue [Line Items]
Net revenues	$ 664.1	$ 682.2