Derivatives (AOCL Related to Cash Flow Hedges) (Details) - Cash Flow Hedge [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized losses (gains), net on unsettled contracts	$ 1.5	$ 6.3
Losses included in AOCL, net of tax	1.3	4.9
Accumulated Other Comprehensive Income (Loss) Cumulative, Changes In Net Gain (Loss) From Cash Flow Hedges Provision (Benefit) For Tax	(0.2)	$ (1.4)
Cash flow hedge derivative losses expected to be reclassified into earnings within the next 12 months	$ (1.2)