Condensed Consolidated Balance Sheets - Duke Energy Ohio (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Allowance for doubtful accounts - receivables	$ 38	$ 46
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	770,000,000	769,000,000
Duke Energy Ohio
Allowance for doubtful accounts - receivables	$ 6	$ 4
Common stock, par value (in usd per share)	$ 8.50	$ 8.50
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares outstanding (in shares)	90,000,000	90,000,000