RATE MATTERS - KPCo Rate Matters (Details) - 2023 Kentucky Base Rate and Securitization Case - KPCo - USD ($) $ in Millions	1 Months Ended
	Mar. 31, 2025	Jan. 31, 2025	Feb. 26, 2024	Jan. 31, 2024	Nov. 30, 2023	Jun. 30, 2023
Public Utilities, General Disclosures [Line Items]
Requested annual increase						$ 94
Requested return on equity						9.90%
Requested securitization bonds regulatory assets recovery						$ 471
Kpco interest in mitchell plant						50.00%
Net book value	$ 542
Settlement agreement annual increase					$ 75
Settlement agreement return on common equity					9.75%
Settlement agreement securitization bonds regulatory assets recovery					$ 471
Approved net increase in Kentucky annual revenues				$ 60
Approved return on equity				9.75%
Reduction in revenue requirement for recovery of actual test year pjm transmission costs		$ 14	$ 14	$ 14
Order entered in mandated period		30 days
Request to defer transmission costs, amount denied	16
Regulatory assets expected to be recovered through securitization				495
Securitized plant retirement costs				307
Securitized deferred storm costs				$ 79
Securitized purchased power expenses	50
Securitized under recovered rider costs	56
Securitized deferred issuance related expenses	$ 3