Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

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)	2023		2022		2021
Duke Energy	$	71	$	74	$	64
Duke Energy Carolinas	25		27		23
Progress Energy	28		27		24
Duke Energy Progress	17		17		15
Duke Energy Florida	11		10		9
Duke Energy Ohio	5		5		5
Duke Energy Indiana	7		7		6
Piedmont	4		4		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)	2023		2022		2021
RSU awards	$	54	$	58	$	49
Performance awards	43		42		39
Pretax stock-based compensation cost	$	97	$	100	$	88
Stock-based compensation costs capitalized	6		5		5
Stock-based compensation expense	$	91	$	95	$	83
Tax benefit associated with stock-based compensation expense	$	20	$	21	$	19

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

The following table includes information related to RSU awards.

	Years Ended December 31,
	2023		2022		2021
Shares granted (in thousands)	670		654		673
Fair value (in millions)	$	65	$	64	$	59

The following table summarizes information about RSU awards outstanding.

		Weighted Average
	Shares	Grant Date Fair Value
	(in thousands)	(per share)
Outstanding at December 31, 2022	1,097	$	95
Granted	670	97
Vested	(548)	95
Forfeited	(104)	96
Outstanding at December 31, 2023	1,115	96
RSU awards expected to vest	1,064	96

Schedule of Performance Awards

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

	Years Ended December 31,
	2023		2022		2021
Shares granted assuming target performance (in thousands)	422		408		380
Fair value (in millions)	$	42	$	40	$	33

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, 2022	1,033	$	97
Granted	422	100
Vested	(298)	105
Forfeited	(42)	98
Outstanding at December 31, 2023	1,115	96
Stock-based performance awards expected to vest	1,086	96