Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill By Reportable Operating Segment

The following table presents goodwill by reportable segment for Duke Energy included on Duke Energy's Consolidated Balance Sheets at December 31, 2021, and 2020.

	Electric Utilities		Gas Utilities		Commercial
(in millions)	and Infrastructure		and Infrastructure		Renewables		Total
Goodwill Balance at December 31, 2020	$	17,379	$	1,924	$	122	$	19,425
Accumulated impairment charges	—		—		(122)		(122)
Goodwill balance at December 31, 2020, adjusted for accumulated impairment charges	$	17,379	$	1,924	$	—	$	19,303
Goodwill Balance at December 31, 2021	$	17,379	$	1,924	$	122	$	19,425
Accumulated impairment charges	—		—		(122)		(122)
Goodwill balance at December 31, 2021, adjusted for accumulated impairment charges	$	17,379	$	1,924	$	—	$	19,303

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, 2021, and 2020.

	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		—
Renewable operating and development projects	106		—		—		—		—		—		—		—
Other	28		—		—		—		—		—		—		—
Total gross carrying amounts	370		73		136		133		3		—		26		—
Accumulated amortization – natural gas, coal and power contracts	(24)		—		—		—		—		—		(24)		—
Accumulated amortization – renewable operating and development projects	(38)		—		—		—		—		—		—		—
Accumulated amortization – other	(4)		—		—		—		—		—		—		—
Total accumulated amortization	(66)		—		—		—		—		—		(24)		—
Total intangible assets, net	$	304	$	73	$	136	$	133	$	3	$	—	$	2	$	—

	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
Emission allowances	$	8	$	—	$	5	$	2	$	3	$	—	$	2	$	—
Renewable energy certificates	196		65		130		130		—		1		—		—
Natural gas, coal and power contracts	24		—		—		—		—		—		24		—
Renewable operating and development projects	107		—		—		—		—		—		—		—
Other	20		—		—		—		—		—		—		—
Total gross carrying amounts	355		65		135		132		3		1		26		—
Accumulated amortization – natural gas, coal and power contracts	(23)		—		—		—		—		—		(23)		—
Accumulated amortization – renewable operating and development projects	(34)		—		—		—		—		—		—		—
Accumulated amortization – other	(3)		—		—		—		—		—		—		—
Total accumulated amortization	(60)		—		—		—		—		—		(23)		—
Total intangible assets, net	$	295	$	65	$	135	$	132	$	3	$	1	$	3	$	—