Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Beginning balances	$ 13,966.0	$ 10,387.3
Goodwill acquired	138.8	3,533.0
Currency translation adjustments	(18.1)	47.3
Reclassifications and other	7.8	(1.6)
Ending balances	14,094.5	13,966.0
Application Software
Goodwill [Roll Forward]
Beginning balances	8,802.3	5,389.4
Goodwill acquired	85.9	3,399.0
Currency translation adjustments	(5.8)	14.5
Reclassifications and other	6.9	(0.6)
Ending balances	8,889.3	8,802.3
Network Software & Systems
Goodwill [Roll Forward]
Beginning balances	3,746.2	3,596.6
Goodwill acquired	52.9	134.0
Currency translation adjustments	(3.0)	16.6
Reclassifications and other	0.9	(1.0)
Ending balances	3,797.0	3,746.2
Measurement &Analytical Solutions
Goodwill [Roll Forward]
Beginning balances	1,167.3	1,155.5
Goodwill acquired	0.0	0.0
Currency translation adjustments	(6.7)	11.8
Reclassifications and other	0.0	0.0
Ending balances	1,160.6	1,167.3
Process Technologies
Goodwill [Roll Forward]
Beginning balances	250.2	245.8
Goodwill acquired	0.0	0.0
Currency translation adjustments	(2.6)	4.4
Reclassifications and other	0.0	0.0
Ending balances	$ 247.6	$ 250.2

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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