Share-Based Compensation (Summary Of Performance Share Units Grant-Date Fair Values And Their Related Assumptions) (Details) - Including Performance Factor Shares Granted [Member]	3 Months Ended
	Mar. 31, 2024 $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant-date fair value	$ 56.99
Risk-free interest rate	4.28%
Volatility factor	46.03%
Contractual term (years)	2 years 10 months 20 days