XML 67 R51.htm IDEA: XBRL DOCUMENT
v3.25.0.1

ORGANIZATION AND BASIS OF PRESENTATION - Property, Plant and Equipment Balances (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Property, Plant and Equipment |  |
In service | $ 52,896 | $ 50,107
Accumulated depreciation | (14,548) | (13,811)
Property, plant and equipment in service net of accumulated provision for depreciation | 38,348 | 36,296
CWIP | 2,754 | 2,116
Total | 41,102 | 38,412
Finance leases | 46 | 68
Financing lease, accumulated amortization | 14 | 33
Corporate/Other |  |
Property, Plant and Equipment |  |
In service | 1,062 | 1,116
Accumulated depreciation | (607) | (594)
Property, plant and equipment in service net of accumulated provision for depreciation | 455 | 522
CWIP | 74 | 48
Total | 529 | 570
Distribution | Operating Segments |  |
Property, Plant and Equipment |  |
In service | 21,245 | 20,423
Accumulated depreciation | (7,338) | (7,008)
Property, plant and equipment in service net of accumulated provision for depreciation | 13,907 | 13,415
CWIP | 618 | 417
Total | 14,525 | 13,832
Integrated | Operating Segments |  |
Property, Plant and Equipment |  |
In service | 17,080 | 16,180
Accumulated depreciation | (3,943) | (3,748)
Property, plant and equipment in service net of accumulated provision for depreciation | 13,137 | 12,432
CWIP | 1,076 | 823
Total | 14,213 | 13,255
Stand-Alone Transmission | Operating Segments |  |
Property, Plant and Equipment |  |
In service | 13,509 | 12,388
Accumulated depreciation | (2,660) | (2,461)
Property, plant and equipment in service net of accumulated provision for depreciation | 10,849 | 9,927
CWIP | 986 | 828
Total | $ 11,835 | $ 10,755
Minimum | Corporate/Other |  |
Property, Plant and Equipment |  |
Average Service Life | 3 years |
Minimum | Distribution | Operating Segments |  |
Property, Plant and Equipment |  |
Average Service Life | 5 years |
Minimum | Integrated | Operating Segments |  |
Property, Plant and Equipment |  |
Average Service Life | 5 years |
Minimum | Stand-Alone Transmission | Operating Segments |  |
Property, Plant and Equipment |  |
Average Service Life | 5 years |
Maximum | Corporate/Other |  |
Property, Plant and Equipment |  |
Average Service Life | 63 years |
Maximum | Distribution | Operating Segments |  |
Property, Plant and Equipment |  |
Average Service Life | 80 years |
Maximum | Integrated | Operating Segments |  |
Property, Plant and Equipment |  |
Average Service Life | 100 years |
Maximum | Stand-Alone Transmission | Operating Segments |  |
Property, Plant and Equipment |  |
Average Service Life | 85 years |

X
- Definition Financing Lease, Right-Of-Use Asset, Accumulated Amortization + References No definition available. + Details
Name: | fe_FinancingLeaseRightOfUseAssetAccumulatedAmortization
Namespace Prefix: | fe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, net of accumulated depreciation of long-lived physical assets, excluding construction in progress, used in the normal conduct of business and not intended for resale. + References No definition available. + Details
Name: | fe_NetPlantExcludingConstructionWorkInProgress
Namespace Prefix: | fe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Public Utilities, Property, Plant and Equipment, Accumulated Depreciation, Excluding Construction Work in Progress + References No definition available. + Details
Name: | fe_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciationExcludingConstructionWorkInProgress
Namespace Prefix: | fe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period end amount of construction work in progress in public utility. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Period end amount of total net PPE. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Period end amount of total gross PPE. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fe_DistributionSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fe_IntegratedSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fe_StandAloneTransmissionSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |