Goodwill and Other Intangible Assets (Goodwill) (Details) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Goodwill [Roll Forward]
Balances	$ 10,815.4
Additions	3,363.0
Other	(0.5)
Currency translation adjustments	(19.3)
Balances	14,158.6
Application Software
Goodwill [Roll Forward]
Balances	5,389.4
Additions	3,229.1
Other	0.5
Currency translation adjustments	(4.8)
Balances	8,614.2
Network Software & Systems
Goodwill [Roll Forward]
Balances	3,933.5
Additions	133.9
Other	(1.0)
Currency translation adjustments	(14.3)
Balances	4,052.1
Measurement & Analytical Solutions
Goodwill [Roll Forward]
Balances	1,178.0
Additions	0.0
Other	0.0
Currency translation adjustments	0.4
Balances	1,178.4
Process Technologies
Goodwill [Roll Forward]
Balances	314.5
Additions	0.0
Other	0.0
Currency translation adjustments	(0.6)
Balances	$ 313.9

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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