Condensed Consolidated Statements of Changes in Equity - Duke Energy Progress - USD ($) $ in Millions	Total	Duke Energy Progress	Duke Energy Progress Member's Equity
Beginning balance at Dec. 31, 2022			$ 10,309
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 804	$ 169	169
Ending balance at Mar. 31, 2023			10,478
Beginning balance at Dec. 31, 2023		10,807	10,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 1,138	272	272
Ending balance at Mar. 31, 2024		$ 11,079	$ 11,079