Revenue Recognition (Net Contract Assets (Liabilities)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Revenue Recognition and Deferred Revenue [Abstract]
Contract assets	$ 2.3		$ 2.3		$ 1.7
Contract liabilities - current	(8.2)		(8.2)		(10.5)
Contract liabilities - noncurrent	(10.7)		(10.7)		(10.3)
Total	(16.6)		(16.6)		$ (19.1)
Contract with Customer, Liability, Revenue Recognized	$ 2.3	$ 0.8	$ 3.0	$ 3.1