Stock-Based Compensation (Summary Of The Status Of Nonvested Share Awards) (Details)	6 Months Ended
	Jun. 30, 2023 $ / shares shares
Nonvested Share Awards [Roll Forward]
Nonvested, Shares, Beginning Balance | shares	1,148,873
Granted, Shares | shares	285,263
Vested, Shares | shares	(304,068)
Forfeited, Shares | shares	(20,526)
Nonvested, Shares, Ending Balance | shares	1,109,542
Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 58.20
Granted , Weighted Average Grant Date Fair Value | $ / shares	63.45
Vested , Weighted Average Grant Date Fair Value | $ / shares	50.59
Forfeited , Weighted Average Grant Date Fair Value | $ / shares	60.58
Nonvested , Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 61.59