Common Stock and Stock-Based Awards (Summary Of Stock-Based Awards) (Details) - $ / shares shares in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
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		1,185	1,057	1,026
Granted, shares or units		724	616	503
Vested, shares or units		(490)	(407)	(377)
Forfeited, shares or units		(173)	(81)	(95)
Non-vested shares outstanding, shares or units, ending balance		1,246	1,185	1,057
Non-vested outstanding, weighted-average grant date fair value, beginning balance		$ 26.93	$ 28.02	$ 27.35
Granted, weighted-average grant date fair value		24.13	25.9	28.52
Vested, weighted-average grant date fair value		26.92	28.08	26.77
Forfeited, weighted-average grant date fair value		25.91	27.44	28.47
Non-vested outstanding, weighted-average grant date fair value, ending balance		$ 25.43	$ 26.93	$ 28.02
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		545	542	368
Granted, shares or units	[1]	244	177	234
Vested, shares or units		(242)
Forfeited, shares or units		(105)	(174)	(60)
Non-vested shares outstanding, shares or units, ending balance		442	545	542
Non-vested outstanding, weighted-average grant date fair value, beginning balance		$ 27.62	$ 28.06	$ 27.93
Granted, weighted-average grant date fair value	[1]	25.3	25.97	28.6
Vested, weighted-average grant date fair value		28.3
Forfeited, weighted-average grant date fair value		26.98	27.29	29.38
Non-vested outstanding, weighted-average grant date fair value, ending balance		$ 26.12	$ 27.62	$ 28.06

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