Share-Based Compensation (Summary Of Unvested Restricted Stock Awards, Performance-Based Restricted Stock Awards And Performance Share Units) (Parenthetical) (Details) shares in Millions	3 Months Ended
	Mar. 31, 2024 shares
Performance Share Units [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum common shares that could be awarded based upon total shareholder return	2.4