Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Other intangible assets
Acquired Cost	$ 2,096.0	$ 2,048.4
Accumulated Amortization	(643.3)	(543.5)
Net Book Value	1,452.7	1,504.9
Indefinite-lived trade names
Assets not subject to amortization:
Acquired Cost	254.1	252.0
Accumulated Amortization	0.0	0.0
Net Book Value	254.1	252.0
Customer relationships
Assets subject to amortization:
Acquired Cost	1,477.9	1,456.0
Accumulated Amortization	(458.7)	(380.5)
Net Book Value	1,019.2	1,075.5
Technology
Assets subject to amortization:
Acquired Cost	203.3	185.6
Accumulated Amortization	(113.9)	(103.4)
Net Book Value	89.4	82.2
Indefinite-lived trade names
Assets subject to amortization:
Acquired Cost	117.5	117.0
Accumulated Amortization	(41.6)	(37.0)
Net Book Value	75.9	80.0
Other
Assets subject to amortization:
Acquired Cost	43.2	37.8
Accumulated Amortization	(29.1)	(22.6)
Net Book Value	$ 14.1	$ 15.2