Goodwill and Other Intangible Assets (Goodwill) (Details) $ in Millions	9 Months Ended
Sep. 30, 2019 USD ($)
Goodwill [Roll Forward]
Balances	$ 9,346.8
Additions	1,424.9
Other	0.7
Currency translation adjustments	(25.7)
Balances	10,746.7
Application Software
Goodwill [Roll Forward]
Balances	5,236.1
Additions	121.3
Other	0.7
Currency translation adjustments	(6.1)
Balances	5,352.0
Network Software & Systems
Goodwill [Roll Forward]
Balances	2,623.7
Additions	1,303.6
Other	0.0
Currency translation adjustments	(13.7)
Balances	3,913.6
Measurement &Analytical Solutions
Goodwill [Roll Forward]
Balances	1,174.7
Additions	0.0
Other	0.0
Currency translation adjustments	(5.1)
Balances	1,169.6
Process Technologies
Goodwill [Roll Forward]
Balances	312.3
Additions	0.0
Other	0.0
Currency translation adjustments	(0.8)
Balances	$ 311.5

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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