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Property, Plant and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Line Items]  
Schedule of Property, Plant and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Regulated assets:
Utility generation, transmission and distribution systems
5-80 years
$103,015 $96,195 
Interstate natural gas pipeline assets
3-80 years
20,237 19,226 
123,252 115,421 
Accumulated depreciation and amortization(38,940)(36,365)
Regulated assets, net84,312 79,056 
Nonregulated assets:
Independent power plants
2-50 years
8,619 8,484 
LNG facility
40 years
3,455 3,423 
Other assets
2-30 years
2,766 2,874 
14,840 14,781 
Accumulated depreciation and amortization(4,176)(3,856)
Nonregulated assets, net10,664 10,925 
94,976 89,981 
Construction in progress8,793 9,267 
Property, plant and equipment, net$103,769 $99,248 
PAC  
Property, Plant and Equipment [Line Items]  
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility Plant:
Generation
15 - 59 years
$14,316 $13,904 
Transmission
60 - 90 years
10,939 8,216 
Distribution
20 - 75 years
9,842 9,060 
Intangible plant and other
2 - 75 years
2,958 2,833 
Utility plant in-service38,055 34,013 
Accumulated depreciation and amortization(12,504)(11,725)
Utility plant in-service, net25,551 22,288 
Nonregulated, net of accumulated depreciation and amortization
14 - 75 years
19 18 
25,570 22,306 
Construction work-in-progress3,550 4,745 
Property, plant and equipment, net$29,120 $27,051 
MEC  
Property, Plant and Equipment [Line Items]  
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility plant:
Generation
20-62 years
$18,446 $18,129 
Transmission
55-80 years
3,029 2,834 
Electric distribution
15-80 years
5,890 5,288 
Natural gas distribution
30-75 years
2,413 2,294 
Utility plant in-service29,778 28,545 
Accumulated depreciation and amortization(8,572)(7,841)
Utility plant in-service, net21,206 20,704 
Nonregulated property, net of accumulated depreciation and amortization
20-50 years
6 6 
21,212 20,710 
Construction work-in-progress1,553 1,260 
Property, plant and equipment, net$22,765 $21,970 
Schedule of Depreciation and Amortization Rates
The average depreciation and amortization rates applied to depreciable utility plant for the years ended December 31 were as follows:
202420232022
Electric3.1 %3.3 %3.2 %
Natural gas3.0 %2.8 %2.9 %
NPC  
Property, Plant and Equipment [Line Items]  
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility plant:
Generation
30 - 65 years
$5,369 $4,476 
Transmission
55 - 75 years
1,660 1,590 
Distribution
24 - 70 years
4,754 4,451 
Intangible plant and other
5 - 65 years
900 906 
 Utility plant
12,683 11,423 
Accumulated depreciation and amortization(4,093)(3,856)
Utility plant, net8,590 7,567 
Nonregulated, net of accumulated depreciation and amortization
40 years
1 1 
8,591 7,568 
Construction work-in-progress810 1,090 
Property, plant and equipment, net$9,401 $8,658 
SPPC  
Property, Plant and Equipment [Line Items]  
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility plant:
Generation
25 - 70 years
$1,339 $1,313 
Transmission
50 - 76 years
1,071 1,023 
Electric distribution
20 - 76 years
2,224 2,074 
Electric intangible plant and other
5 - 65 years
254 247 
Natural gas distribution
35 - 70 years
563 537 
Natural gas intangible plant and other
5 - 65 years
18 17 
Common other
5 - 65 years
377 376 
Utility plant5,846 5,587 
Accumulated depreciation and amortization(2,208)(2,091)

3,638 3,496 
Construction work-in-progress801 326 
Property, plant and equipment, net$4,439 $3,822 
EEGH  
Property, Plant and Equipment [Line Items]  
Schedule of Property, Plant and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility Plant:
Interstate natural gas transmission assets
34 - 51 years
$6,461 $6,269 
Storage assets
47 - 79 years
2,767 2,705 
Intangible plant and other assets
4 - 53 years
482 461 
Utility plant in-service9,710 9,435 
Accumulated depreciation and amortization(3,381)(3,201)
Utility plant in-service, net6,329 6,234 
Nonutility Plant:
LNG facility40 years4,565 4,533 
Accumulated depreciation and amortization(779)(655)
Nonutility plant, net3,786 3,878 
10,115 10,112 
Construction work- in-progress223 231 
Property, plant and equipment, net$10,338 $10,343 
EGTS  
Property, Plant and Equipment [Line Items]  
Schedule of Property, Plant and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Interstate natural gas transmission assets
47 - 51 years
$5,093 $5,011 
Storage assets
47 - 51 years
1,803 1,751 
Intangible plant and other assets
12 - 53 years
386 364 
Plant in-service7,282 7,126 
Accumulated depreciation and amortization(2,699)(2,563)
4,583 4,563 
Construction work-in-progress188 152 
Property, plant and equipment, net$4,771 $4,715