Stock-Based Compensation Plans (Stock Option Plan Activity) (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Number of Shares (in 000’s)
Options outstanding, beginning balance (in shares)	0
Converted in Distribution (in shares)	563,000
Granted (in shares)	0
Exercised (in shares)	(49,000)
Canceled (in shares)	(3,000)
Options outstanding, ending balance (in shares)	511,000
Options exercisable (in shares)	230,000
Weighted Average Exercise Price
Options outstanding, beginning balance (in dollars per share) | $ / shares	$ 0
Converted in Distribution (in dollars per share) | $ / shares	34.42
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	28.11
Canceled (in dollars per share) | $ / shares	31.36
Options outstanding, ending balance (in dollars per share) | $ / shares	35.04
Options exercisable (in dollars per share) | $ / shares	$ 26.81
Weighted average remaining life, Options outstanding (years)	6 years 11 months 1 day
Weighted average remaining life, Options exercisable (years)	4 years 11 months 19 days
Aggregate intrinsic value, Options outstanding | $	$ 11.2
Aggregate intrinsic value, Options exercisable | $	$ 6.9
SpinCo Stock-Based Compensation Awards | Stock Options
Weighted Average Exercise Price
Options issued (in shares)	611,932