Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

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)	2020		2019		2018
Duke Energy	$	61	$	65	$	56
Duke Energy Carolinas	22		24		20
Progress Energy	23		24		21
Duke Energy Progress	15		15		13
Duke Energy Florida	9		9		8
Duke Energy Ohio	4		5		4
Duke Energy Indiana	6		6		5
Piedmont	3		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)	2020		2019		2018
RSU awards	$	46	$	44	$	43
Performance awards	38		45		35
Pretax stock-based compensation cost	$	84	$	89	$	78
Stock-based compensation costs capitalized	5		5		5
Stock-based compensation expense	$	79	$	84	$	73
Tax benefit associated with stock-based compensation expense	$	18	$	19	$	17

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

The following table includes information related to RSU awards.

	Years Ended December 31,
	2020		2019		2018
Shares granted (in thousands)	498		571		649
Fair value (in millions)	$	50	$	51	$	49

The following table summarizes information about RSU awards outstanding.

		Weighted Average
	Shares	Grant Date Fair Value
	(in thousands)	(per share)
Outstanding at December 31, 2019	1,010	$	83
Granted	498	100
Vested	(532)	82
Forfeited	(37)	92
Outstanding at December 31, 2020	939	93
RSU awards expected to vest	898	93

Schedule of Performance Awards

The following table includes information related to stock-based performance awards.

	Years Ended December 31,
	2020		2019		2018
Shares granted assuming target performance (in thousands)	319		320		372
Fair value (in millions)	$	34	$	27	$	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
	Shares	Grant Date Fair Value
	(in thousands)	(per share)
Outstanding at December 31, 2019	1,109	$	80
Granted	319	105
Vested	(448)	81
Forfeited	(18)	88
Outstanding at December 31, 2020	962	87
Stock-based performance awards expected to vest	937	87