Goodwill and Intangible Assets - Intangible Assets Other Than Goodwill and Trade Names (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	$ 3,215.4	$ 3,218.5
Intellectual property, patents, non-compete and other intangibles
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	1,015.6	1,007.6
Intangible assets, accumulated amortization	274.9	223.7
Backlog
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	1,173.0	1,224.7
Intangible assets, accumulated amortization	259.2	206.9
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	1,026.8	986.2
Intangible assets, accumulated amortization	$ 306.4	$ 276.3