REGULATORY MATTERS - Ohio (Details) - PUCO meter in Thousands, $ in Thousands								9 Months Ended
	Jul. 31, 2024 USD ($)	Jun. 14, 2024	May 31, 2024 USD ($)	Apr. 12, 2024 USD ($) meter	Apr. 05, 2023	Jul. 15, 2022 USD ($) meter circuit	Jun. 01, 2016 USD ($)	Sep. 30, 2024 USD ($) payment	May 15, 2024 USD ($)	Sep. 13, 2021 requirement	Aug. 06, 2021 USD ($)
The Ohio Companies | Minimum
Regulatory Matters [Line Items]
Approved period of rate plan					8 years
ESP V | The Ohio Companies
Regulatory Matters [Line Items]
Approved bill assistance contribution amount									$ 32,500
Requested reduced rate term		3 years
OHIO
Regulatory Matters [Line Items]
Proposed goal to reduce CO2 pollution (percent)							90.00%
OHIO | Energy Conservation, Economic Development and Job Retention
Regulatory Matters [Line Items]
Contribution amount							$ 51,000
OHIO | Delivery Capital Recovery Rider
Regulatory Matters [Line Items]
Annual revenue cap for rider for years three through six							$ 15,000
OHIO | Delivery Capital Recovery Rider | Distribution Segment | CEI
Regulatory Matters [Line Items]
Approved ROE			10.80%
Capital structure, debt			44.00%
Capital structure, equity			56.00%
OHIO | Delivery Capital Recovery Rider | Distribution Segment | TE
Regulatory Matters [Line Items]
Capital structure, debt			45.00%
Capital structure, equity			55.00%
OHIO | Delivery Capital Recovery Rider | Distribution Segment | OE
Regulatory Matters [Line Items]
Capital structure, debt			46.00%
Capital structure, equity			54.00%
OHIO | Energy Efficiency and Peak Demand Reduction Stipulation Settlement | Distribution Segment | CEI
Regulatory Matters [Line Items]
Increase base distribution rate			$ 94,000
Public utilities, adjusted rate increase base distribution	$ 190,000
OHIO | Phase Two of Grid Modernization Plan | The Ohio Companies
Regulatory Matters [Line Items]
Numbers of additional meters to be installed | meter				1,400		700
Number of circuits additional automation equipment to be installed on | circuit						240
Number of circuits additional voltage regulating equipment to be installed on | circuit						220
Period of grid modernization plan				4 years		4 years
Requested amount of capital investments				$ 421,000		$ 626,000
Requested amount of operations and maintenance expenses						$ 144,000
OHIO | Rider DCR Audit Report | The Ohio Companies
Regulatory Matters [Line Items]
Refund to customer of pole attachment sates								$ 15			$ 15
Public utilities, number of audit examined payments | payment								53
Public utilities, audit examined payment amount								$ 75,000
Number of requirements with minor non-compliance | requirement										8
Number of requirements | requirement										23
OHIO | Rider DCR Audit Report | The Ohio Companies | Maximum
Regulatory Matters [Line Items]
Loss Contingency, Payment Audit, Payments In Support Of Passage Of House Bill Allocated To Defendants								$ 5,000