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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