Stock Compensation (Summary Of Option Activity During The Period) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Equity [Abstract]
Shares under option at beginning of period | shares	2,097
Shares under option, Exercised | shares	(483)
Shares under option, Forfeited or expired | shares	0
Shares under option at end of period | shares	1,614
Shares under option, Exercisable | shares	1,614
Weighted-average exercise price of Shares under option at beginning of period (in dollars per share) | $ / shares	$ 38.27
Weighted-average exercise price of Shares under option, Exercised (in dollars per share) | $ / shares	42.15
Weighted-average exercise price of Shares under option, Forfeited or expired (in dollars per share) | $ / shares	0.00
Weighted-average exercise price of Shares under option at end of period (in dollars per share) | $ / shares	37.11
Weighted-average exercise price of Shares under option, Exercisable (in dollars per share) | $ / shares	$ 37.11