Stock Compensation (Summary Of Option Activity During The Period) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Equity [Abstract]
Shares under option at beginning of period | shares	4,584
Shares under option, Exercised | shares	(2,484)
Shares under option, Forfeited or expired | shares	(3)
Shares under option at end of period | shares	2,097
Shares under option, Exercisable | shares	2,097
Weighted-average exercise price of Shares under option at beginning of period (in dollars per share) | $ / shares	$ 37.20
Weighted-average exercise price of Shares under option, Exercised (in dollars per share) | $ / shares	36.30
Weighted-average exercise price of Shares under option, Forfeited or expired (in dollars per share) | $ / shares	26.25
Weighted-average exercise price of Shares under option at end of period (in dollars per share) | $ / shares	38.27
Weighted-average exercise price of Shares under option, Exercisable (in dollars per share) | $ / shares	$ 38.27