Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets (liabilities)
U.S. federal tax attributes	$ 39.7	$ 37.6
Deferred revenue	37.1	35.9
Employee benefits	30.0	30.9
Capitalized research and development costs	0.0	29.4
Lease liabilities	27.3	22.8
U.S. state tax attributes	22.2	19.2
Non-U.S. tax attributes	18.3	15.7
Other, net	26.0	21.7
Gross deferred assets	200.6	213.2
Valuation allowances	(52.0)	(51.7)
Deferred tax assets after valuation allowances	148.6	161.5
Intangibles	(297.7)	(308.1)
Property, plant and equipment	(54.3)	(47.7)
Right of use assets	(25.7)	(21.6)
Undistributed foreign earnings	(6.7)	(6.3)
Gross deferred liabilities	(384.4)	(383.7)
Net deferred tax liabilities	$ (235.8)	$ (222.2)