Capital Stock and Equity Compensation (Deferred Stock Units) (Details) - Deferred Stock Units - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Awards outstanding beginning balance (in shares)			6,850
Awards granted (in shares)			8,100
Stock issued (in shares)			(6,850)
Awards outstanding ending balance (in shares)	8,100		8,100
Compensation expense	$ 0.0	$ 0.0	$ 1.2	$ 1.3