Stock-Based Compensation (Summary Of The Status Of Nonvested Share Awards) (Details)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Nonvested Share Awards [Roll Forward]
Nonvested, Shares, Beginning Balance | shares	1,148,873
Granted, Shares | shares	311,275
Vested, Shares | shares	(315,761)
Forfeited, Shares | shares	(25,539)
Nonvested, Shares, Ending Balance | shares	1,118,848
Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 58.20
Granted , Weighted Average Grant Date Fair Value | $ / shares	62.29
Vested , Weighted Average Grant Date Fair Value | $ / shares	50.67
Forfeited , Weighted Average Grant Date Fair Value | $ / shares	60.44
Nonvested , Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 61.41