Goodwill and Other Intangible Assets - Goodwill by Segment (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 5,582.6
Acquisitions	76.7
Foreign currency translation	(22.3)
Balance at end of period	5,637.0
Industrial Technologies and Services
Goodwill [Roll Forward]
Balance at beginning of period	4,151.2
Acquisitions	76.7
Foreign currency translation	(18.4)
Balance at end of period	4,209.5
Precision and Science Technologies
Goodwill [Roll Forward]
Balance at beginning of period	1,431.4
Acquisitions	0.0
Foreign currency translation	(3.9)
Balance at end of period	$ 1,427.5