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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule Of Total Stock-Based Compensation Expense, net of tax
The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation.
 Years Ended December 31,
(in millions)202120202019
Duke Energy$64 $61 $65 
Duke Energy Carolinas23 22 24 
Progress Energy24 23 24 
Duke Energy Progress15 15 15 
Duke Energy Florida9 9 9 
Duke Energy Ohio5 4 5 
Duke Energy Indiana6 6 6 
Piedmont3 3 3 
Schedule Of Stock-Based Compensation Expense
Duke Energy's pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table.
 Years Ended December 31,
(in millions)202120202019
RSU awards$49 $46 $44 
Performance awards39 38 45 
Pretax stock-based compensation cost$88 $84 $89 
Stock-based compensation costs capitalized5 5 5 
Stock-based compensation expense$83 $79 $84 
Tax benefit associated with stock-based compensation expense$19 $18 $19 
Schedule of Share-based Compensation, Restricted Stock Units Award Activity The following table includes information related to RSU awards.
 Years Ended December 31,
 202120202019
Shares granted (in thousands) 673 498 571 
Fair value (in millions)$59 $50 $51 
The following table summarizes information about RSU awards outstanding.
Weighted Average
SharesGrant Date Fair Value
 (in thousands)(per share)
Outstanding at December 31, 2020939 $93 
Granted673 88 
Vested(502)89 
Forfeited(67)92 
Outstanding at December 31, 20211,043 92 
RSU awards expected to vest996 92 
Schedule of Performance Awards
The following table includes information related to stock-based performance awards.
 Years Ended December 31,
 202120202019
Shares granted assuming target performance (in thousands)380 319 320 
Fair value (in millions)$33 $34 $27 
Schedule of Nonvested Performance-based Units Activity
The following table summarizes information about stock-based performance awards outstanding and assumes payout at the target level.
Weighted Average
SharesGrant Date Fair Value
 (in thousands)(per share)
Outstanding at December 31, 2020962 $87 
Granted380 88 
Vested(346)73 
Forfeited(44)92 
Outstanding at December 31, 2021952 93 
Stock-based performance awards expected to vest927 93