Regulatory Matters - Ohio (Details) - OHIO - PUCO meter in Thousands, $ in Thousands	Jul. 15, 2022 USD ($) circuit meter	Nov. 01, 2021 USD ($)	Jun. 01, 2016 USD ($)	Sep. 13, 2021 requirement	Aug. 06, 2021 USD ($)
Regulatory Matters [Line Items]
Proposed goal to reduce CO2 pollution (percent)			90.00%
Energy Conservation, Economic Development and Job Retention
Regulatory Matters [Line Items]
Contribution amount			$ 51,000
Delivery Capital Recovery Rider
Regulatory Matters [Line Items]
Annual revenue cap for rider for years three through six			20,000
Annual revenue cap for rider for years six through eight			$ 15,000
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
SEET 2017-2019 Cases | The Ohio Companies
Regulatory Matters [Line Items]
Rate refunds		$ 96,000
Ohio Stipulation
Regulatory Matters [Line Items]
Rate refunds		210,000
Rate refunds in 2022		80,000
Rate refunds in 2023		60,000
Rate refunds in 2024		45,000
Rate refunds in 2025		$ 25,000
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