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Share-Based Compensation (Summary Of Performance Unit Awards) (Details) - Performance Unit Awards
12 Months Ended
Dec. 31, 2022
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares issued in period 26,685
Number of Units  
Unvested, beginning balance 6,255,283
Vested (6,221,223)
Forfeited (34,060)
Unvested, ending balance 0
Weighted Average Grant Date Fair Value  
Unvested, beginning balance (in USD per share) | $ / shares $ 0.78
Vested (in USD per share) | $ / shares 0.77
Forfeited (in USD per share) | $ / shares 0.89
Unvested, ending balance (in USD per share) | $ / shares $ 0