Condensed Consolidated Balance Sheets - Duke Energy Indiana (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Allowance for doubtful accounts - receivables	$ 44	$ 46
Duke Energy Indiana
Allowance for doubtful accounts - receivables	$ 3	$ 3

Amount of allowance related to receivables from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer, that are expected to be uncollectible.

No definition available.

Name:	duk_AllowanceforDoubtfulAccountsandOtherReceivablesCurrent
Namespace Prefix:	duk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant