Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2022, and 2021.

	December 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Emission allowances	$	8	$	—	$	5	$	2	$	3	$	—	$	2	$	—
Renewable energy certificates	210		84		124		124		—		2		—		—
Other	55		—		4		1		3		—		—		22
Total gross carrying amounts	273		84		133		127		6		2		2		22
Accumulated amortization – other	(8)		—		(1)		—		(1)		—		—		(2)
Total accumulated amortization	(8)		—		(1)		—		(1)		—		—		(2)
Total intangible assets, net	$	265	$	84	$	132	$	127	$	5	$	2	$	2	$	20

	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Emission allowances	$	8	$	—	$	5	$	2	$	3	$	—	$	2	$	—
Renewable energy certificates	204		73		131		131		—		—		—		—
Natural gas, coal and power contracts	24		—		—		—		—		—		24		—
Other	28		—		—		—		—		—		—		—
Total gross carrying amounts	264		73		136		133		3		—		26		—
Accumulated amortization – natural gas, coal and power contracts	(24)		—		—		—		—		—		(24)		—
Accumulated amortization – other	(4)		—		—		—		—		—		—		—
Total accumulated amortization	(28)		—		—		—		—		—		(24)		—
Total intangible assets, net	$	236	$	73	$	136	$	133	$	3	$	—	$	2	$	—