Common Stock and Stock-Based Awards Plans (Summary Of Stock-Based Awards) (Details) - $ / shares shares in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares outstanding, shares or units, beginning balance		1,057	1,026	893
Granted, shares or units		616	503	533
Vested, shares or units		(407)	(377)	(336)
Forfeited, shares or units		(81)	(95)	(64)
Non-vested shares outstanding, shares or units, ending balance		1,185	1,057	1,026
Non-vested outstanding, weighted-average grant date fair value, beginning balance		$ 28.02	$ 27.35	$ 28.06
Granted, weighted-average grant date fair value		25.90	28.52	26.52
Vested, weighted-average grant date fair value		28.08	26.77	27.69
Forfeited, weighted-average grant date fair value		27.44	28.47	28.54
Non-vested outstanding, weighted-average grant date fair value, ending balance		$ 26.93	$ 28.02	$ 27.35
Performance-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested shares outstanding, shares or units, beginning balance		542	368	384
Granted, shares or units	[1]	177	234	165
Forfeited, shares or units		(174)	(60)	(181)
Non-vested shares outstanding, shares or units, ending balance		545	542	368
Non-vested outstanding, weighted-average grant date fair value, beginning balance		$ 28.06	$ 27.93	$ 28.89
Granted, weighted-average grant date fair value	[1]	25.97	28.60	28.02
Forfeited, weighted-average grant date fair value		27.29	29.38	30.04
Non-vested outstanding, weighted-average grant date fair value, ending balance		$ 27.62	$ 28.06	$ 27.93

[1] Represents target number of units that can vest based on the achievement of the performance goals.