Goodwill And Intangible Assets (Components Of Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	$ 1,850.0	$ 1,835.7
Intangible assets, accumulated amortization	763.4	659.0
Acquired technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	246.7	246.7
Intangible assets, accumulated amortization	73.6	49.3
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	175.0	175.0
Intangible assets, accumulated amortization	175.0	175.0
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	285.4	285.0
Intangible assets, accumulated amortization	85.9	57.4
Licenses, patents and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	811.1	812.6
Intangible assets, accumulated amortization	227.6	194.8
Software
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	215.9	232.1
Intangible assets, accumulated amortization	151.1	159.1
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross carrying amount	115.9	84.3
Intangible assets, accumulated amortization	$ 50.2	$ 23.4