Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 1,873.1	$ 1,761.6
Current year acquisitions		99.7
Prior year acquisitions	6.6	3.1
Dispositions	(1.9)
Foreign currency translation	(6.5)	8.7
Goodwill, end of period	1,871.3	1,873.1
Electrical Solutions
Goodwill [Roll Forward]
Goodwill, beginning of period	613.7	589.0
Current year acquisitions		21.1
Prior year acquisitions	0.0	0.5
Dispositions	0.0
Foreign currency translation	(1.2)	3.1
Goodwill, end of period	612.5	613.7
Utility Solutions
Goodwill [Roll Forward]
Goodwill, beginning of period	1,259.4	1,172.6
Current year acquisitions		78.6
Prior year acquisitions	6.6	2.6
Dispositions	(1.9)
Foreign currency translation	(5.3)	5.6
Goodwill, end of period	$ 1,258.8	$ 1,259.4