Revenue Recognition (Net Contract Assets (Liabilities)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Revenue Recognition and Deferred Revenue [Abstract]
Contract assets	$ 2.1		$ 1.7
Contract liabilities - current	(10.0)		(10.5)
Contract liabilities - noncurrent	(10.4)		(10.3)
Total	(18.3)		$ (19.1)
Contract with Customer, Liability, Revenue Recognized	$ 0.6	$ 2.3