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REGULATORY MATTERS - Ohio (Details) - PUCO meter in Thousands, $ in Thousands	Apr. 12, 2024 USD ($) meter	Apr. 05, 2023 USD ($)	Jul. 15, 2022 USD ($) circuit meter	Jun. 01, 2016 USD ($)	Sep. 13, 2021 requirement	Aug. 06, 2021 USD ($)
The Ohio Companies
Regulatory Matters [Line Items]
Commitment to spend		$ 52,000
Minimum \| The Ohio Companies
Regulatory Matters [Line Items]
Approved period of rate plan		8 years
Amount of revenue increase		$ 15,000
Maximum \| The Ohio Companies
Regulatory Matters [Line Items]
Amount of revenue increase		$ 21,000
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 six through eight				$ 15,000
OHIO \| Phase Two of Grid Modernization Plan \| The Ohio Companies
Regulatory Matters [Line Items]
Numbers of additional meters to be installed \| meter			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
Requested amount of capital investments			$ 626,000
Requested amount of operations and maintenance expenses			$ 144,000
OHIO \| Phase Two of Grid Modernization Plan \| The Ohio Companies \| Subsequent Event
Regulatory Matters [Line Items]
Numbers of additional meters to be installed \| meter	1,400
Period of grid modernization plan	4 years
Requested amount of capital investments	$ 421,000
OHIO \| Rider DCR Audit Report \| The Ohio Companies
Regulatory Matters [Line Items]
Refund to customer of pole attachment sates						$ 15
Number of requirements with minor non-compliance \| requirement					8
Number of requirements \| requirement					23