(Summary Of Activity Of Restricted Stock Award Program) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares/units, outstanding	5,926,142	5,620,025	5,514,728
Shares/units, granted	1,899,211	2,316,295	2,171,385
Shares/units, shares issued	(1,130,236)	(994,052)	(1,221,950)
Shares/units, forfeited	(1,382,637)	(1,016,126)	(844,138)
Shares/Units, outstanding	5,312,480	5,926,142	5,620,025
Weighted average grant date fair value, outstanding	$ 35.43	$ 40.36	$ 41.14
Weighted average grant date fair value, granted	50.32	45.24	49.15
Weighted average grant date fair value, shares issued	40.23	63.54	51.70
Weighted average grant date fair value, forfeited	42.03	57.55	51.70
Weighted average grant date fair value, outstanding	$ 38.01	$ 35.43	$ 40.36
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares/units, outstanding	103,769	126,075	160,700
Shares/units, granted	132,200	85,098	82,228
Shares/units, shares issued	(104,177)	(85,768)	(83,053)
Shares/units, forfeited	(5,400)	(21,636)	(33,800)
Shares/Units, outstanding	126,392	103,769	126,075
Weighted average grant date fair value, outstanding	$ 49.03	$ 44.83	$ 47.27
Weighted average grant date fair value, granted	43.38	50.90	40.12
Weighted average grant date fair value, shares issued	44.53	45.59	44.25
Weighted average grant date fair value, forfeited	47.78	45.52	46.43
Weighted average grant date fair value, outstanding	$ 46.88	$ 49.03	$ 44.83