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Share-Based Compensation Plans (Schedule Of Stock Option Activity) (Details)
 12 Months Ended
Dec. 31, 2024
USD ($)
$ / shares
shares
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Options Outstanding, Beginning Balance | shares 2,141,360
Options Granted | shares 3,334,887
Options Exercised | shares (16,668)
Options Forfeited | shares (93,758)
Options Expired | shares (122,905)
Options Outstanding, Ending Balance | shares 5,242,916
Options Vested or expected to vest | shares 5,242,916
Options Exercisable | shares 2,534,682
Options Outstanding, Weighted Average Exercise Price, Beginning Balance | $ / shares $ 65.00
Options Granted, Weighted Average Exercise Price | $ / shares 6.91
Options Exercised, Weighted Average Exercise Price | $ / shares 12.26
Options Forfeited, Weighted Average Exercise Price | $ / shares 26.87
Options Expired, Weighted Average Exercise Price | $ / shares 63.56
Options Outstanding, Weighted Average Exercise Price, Ending Balance | $ / shares 28.76
Options Vested or expected to vest, Weighted Average Exercise Price | $ / shares 28.76
Options Exercisable, Weighted Average Exercise Price | $ / shares $ 50.07
Options Outstanding, Weighted Average Remaining Contractual Term 8 years 21 days
Options Vested or expected to vest, Weighted Average Remaining Contractual Term 8 years 21 days
Options Exercisable, Weighted Average Remaining Contractual Term 6 years 6 months 7 days
Options Vested or expected to vest, Aggregate Intrinsic Value | $ $ 0