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Goodwill and Other Intangible Assets (Goodwill) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Goodwill [Roll Forward]
Balances	$ 9,346.8
Additions	311.1
Other	0.8
Currency translation adjustments	(1.0)
Balances	9,657.7
Application Software
Goodwill [Roll Forward]
Balances	5,236.1
Additions	0.0
Other	0.8
Currency translation adjustments	2.2
Balances	5,239.1
Network Software & Systems
Goodwill [Roll Forward]
Balances	2,623.7
Additions	311.1
Other	0.0
Currency translation adjustments	(5.9)
Balances	2,928.9
Measurement &Analytical Solutions
Goodwill [Roll Forward]
Balances	1,174.7
Additions	0.0
Other	0.0
Currency translation adjustments	1.3
Balances	1,176.0
Process Technologies
Goodwill [Roll Forward]
Balances	312.3
Additions	0.0
Other	0.0
Currency translation adjustments	1.4
Balances	$ 313.7

X

- Definition

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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