Goodwill and Other Intangible Assets - Goodwill by Segment (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 5,582.6
Acquisitions	581.8
Foreign currency translation	(63.8)
Balance at end of period	6,100.6
Industrial Technologies and Services
Goodwill [Roll Forward]
Balance at beginning of period	4,151.2
Acquisitions	76.6
Foreign currency translation	(40.6)
Balance at end of period	4,187.2
Precision and Science Technologies
Goodwill [Roll Forward]
Balance at beginning of period	1,431.4
Acquisitions	505.2
Foreign currency translation	(23.2)
Balance at end of period	$ 1,913.4