Other Income and Expenses, Net (Tables)

12 Months Ended

Dec. 31, 2018

Component Of Other Income Expense Nonoperating [Line Items]

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, 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

	Year Ended December 31, 2017
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Interest income	$	13	$	2	$	6	$	2	$	5	$	6	$	8	$	—
AFUDC equity	237		106		92		47		45		11		28		—
Post in-service equity returns	40		28		12		12		—		—		—		—
Nonoperating income, other	218		63		99		54		46		6		11		(11		)
Other income and expense, net	$	508	$	199	$	209	$	115	$	96	$	23	$	47	$	(11	)

	Year Ended December 31, 2016
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana
Interest income	$	21	$	4	$	4	$	3	$	2	$	5	$	6
AFUDC equity	200		102		76		50		26		6		16
Post in-service equity returns	67		55		12		12		—		—		—
Nonoperating income, other	175		53		94		67		35		—		4
Other income and expense, net(a)	$	463	$	214	$	186	$	132	$	63	$	11	$	26

(a) Amounts for Piedmont for the two months ended December 31, 2016, and for the year ended October 31, 2016, were not material.