Other Income and Expenses, Net (Tables)

12 Months Ended

Dec. 31, 2020

Other Income and Expenses [Abstract]

Schedule of Other Income and Expenses, Net

The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows.

	Year Ended December 31, 2020
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Interest income	$	32	$	4	$	8	$	2	$	6	$	4	$	6	$	17
AFUDC equity	154		62		42		29		12		7		23		19
Post in-service equity returns	27		17		8		8		—		1		1		—
Nonoperating income, other	240		94		71		36		35		4		7		15
Other income and expense, net	$	453	$	177	$	129	$	75	$	53	$	16	$	37	$	51

	Year Ended December 31, 2019
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Interest income	$	31	$	1	$	11	$	—	$	11	$	10	$	10	$	1
AFUDC equity	139		42		66		60		6		13		18		—
Post in-service equity returns	29		20		7		7		—		1		—		—
Nonoperating income, other	231		88		57		33		31		—		13		19
Other income and expense, net	$	430	$	151	$	141	$	100	$	48	$	24	$	41	$	20

	Year Ended December 31, 2018
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Interest income	$	20	$	1	$	18	$	1	$	18	$	7	$	9	$	1
AFUDC equity	221		73		104		57		47		11		32		—
Post in-service equity returns	15		9		5		5		—		1		—		—
Nonoperating income, other	143		70		38		24		21		4		4		13
Other income and expense, net	$	399	$	153	$	165	$	87	$	86	$	23	$	45	$	14