Business Combination Transactions (Identifiable Intangible Assets Acquired) (Details) - FMCTI Merger $ in Millions	Jan. 16, 2017 USD ($)
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 1,390.3
Acquired technology
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 240.0
Estimated Useful Lives	10 years
Backlog
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 175.0
Estimated Useful Lives	2 years
Customer relationships
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 285.0
Estimated Useful Lives	10 years
Tradenames
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 635.0
Estimated Useful Lives	20 years
Software
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 55.3