Goodwill and Other Intangible Assets - Goodwill by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Balance at beginning of period	$ 1,287.7	$ 1,289.5
Acquisitions	4,904.6	8.3
Foreign currency translation and other	111.3	(10.1)
Balance at end of period	6,303.6	1,287.7
Industrial Technologies and Services
Goodwill [Roll Forward]
Balance at beginning of period	865.4	866.8
Acquisitions	3,213.5	6.3
Foreign currency translation and other	72.3	(7.7)
Balance at end of period	4,151.2	865.4
Precision and Science Technologies
Goodwill [Roll Forward]
Balance at beginning of period	227.5	227.9
Acquisitions	1,165.5	2.0
Foreign currency translation and other	38.4	(2.4)
Balance at end of period	1,431.4	227.5
Specialty Vehicle Technologies
Goodwill [Roll Forward]
Balance at beginning of period	0.0	0.0
Acquisitions	525.6	0.0
Foreign currency translation and other	0.6	0.0
Balance at end of period	526.2	0.0
High Pressure Solutions
Goodwill [Roll Forward]
Balance at beginning of period	194.8	194.8
Acquisitions	0.0	0.0
Foreign currency translation and other	0.0	0.0
Balance at end of period	$ 194.8	$ 194.8