Supplementary Data - Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 4,689.4
Goodwill Reallocation	0.0
Acquisitions	3.2
Foreign currency and other	57.8
Goodwill, Ending Balance	4,750.4
Goodwill, impaired, accumulated impairment loss	207.2		$ 207.2
Acquisitions, net of cash acquired	48.4	$ 0.0
us-gaap_PaymentsToAcquireBusinesses investing and financing, net cash acquired	54.2
MD&E
Goodwill [Roll Forward]
Goodwill, Beginning Balance	2,332.8
Goodwill Reallocation	2.7
Acquisitions	48.2
Foreign currency and other	14.7
Goodwill, Ending Balance	2,398.4
IA&C
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,681.8
Goodwill Reallocation	(2.7)
Acquisitions	0.0
Foreign currency and other	35.6
Goodwill, Ending Balance	1,714.7
SC&E
Goodwill [Roll Forward]
Goodwill, Beginning Balance	674.8
Goodwill Reallocation	0.0
Acquisitions	(45.0)
Foreign currency and other	7.5
Goodwill, Ending Balance	$ 637.3