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Property, Plant and Equipment, Net
 9 Months Ended
Sep. 30, 2022
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Property, plant and equipment, net consists of the following (in millions):
   As of
 Depreciable September 30, December 31,
Life20222021
Regulated assets:   
Utility generation, transmission and distribution systems
5-80 years
 $90,756  $90,223 
Interstate natural gas pipeline assets
3-80 years
 17,882  17,423 
   108,638 107,646 
Accumulated depreciation and amortization  (34,011) (32,680)
Regulated assets, net  74,627 74,966 
      
Nonregulated assets:     
Independent power plants
2-50 years
 8,052  7,665 
Cove Point LNG facility40 years3,397 3,364 
Other assets
2-30 years
 2,903  2,666 
   14,352 13,695 
Accumulated depreciation and amortization  (3,274) (3,041)
Nonregulated assets, net  11,078 10,654 
      
Net operating assets  85,705 85,620 
Construction work-in-progress  5,198  4,196 
Property, plant and equipment, net  $90,903 $89,816 

Construction work-in-progress includes $4.8 billion as of September 30, 2022 and $3.8 billion as of December 31, 2021, related to the construction of regulated assets.
PAC  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Property, plant and equipment, net consists of the following (in millions):
  As of
 September 30,December 31,
Depreciable Life20222021
Utility Plant: 
Generation
15 - 59 years
$13,761 $13,679 
Transmission
60 - 90 years
7,982 7,894 
Distribution
20 - 75 years
8,321 8,044 
Intangible plant(1)
5 - 75 years
1,147 1,106 
Other
5 - 60 years
1,606 1,539 
Utility plant in-service32,817 32,262 
Accumulated depreciation and amortization (11,057)(10,507)
Utility plant in-service, net 21,760 21,755 
Other non-regulated, net of accumulated depreciation and amortization
14 - 95 years
18 18 
Plant, net21,778 21,773 
Construction work-in-progress 2,115 1,141 
Property, plant and equipment, net $23,893 $22,914 
(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.
MEC  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Property, plant and equipment, net consists of the following (in millions):
As of
September 30,December 31,
Depreciable Life20222021
Utility plant in-service, net:
Generation
20-70 years
$18,201 $17,397 
Transmission
52-75 years
2,609 2,474 
Electric distribution
20-75 years
4,777 4,661 
Natural gas distribution
29-75 years
2,101 2,039 
Utility plant in-service27,688 26,571 
Accumulated depreciation and amortization(7,886)(7,376)
Utility plant in-service, net19,802 19,195 
Nonregulated property, net:
Nonregulated property, gross
20-50 years
7 7 
Accumulated depreciation and amortization(1)(1)
Nonregulated property, net
6 6 
19,808 19,201 
Construction work-in-progress972 1,100 
Property, plant and equipment, net$20,780 $20,301 

Under a revenue sharing arrangement in Iowa, MidAmerican Energy accrues throughout the year a regulatory liability based on the extent to which its anticipated annual equity return exceeds specified thresholds, with an equal amount recorded in depreciation and amortization expense. The annual regulatory liability accrual reduces utility plant upon final determination of the amount. For the three- and nine-month periods ended September 30, 2022, $115 million and $211 million, respectively, was accrued. No accrual was recorded for the three- and nine-months periods ended September 30, 2021.
MidAmerican Funding, LLC  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, NetRefer to Note 3 of MidAmerican Energy's Notes to Financial Statements.
NPC  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Property, plant and equipment, net consists of the following (in millions):
As of
Depreciable LifeSeptember 30,December 31,
20222021
Utility plant:
Generation
30 - 55 years
$3,908 $3,793 
Transmission
45 - 70 years
1,543 1,503 
Distribution
20 - 65 years
4,077 3,920 
General and intangible plant
5 - 65 years
859 836 
Utility plant10,387 10,052 
Accumulated depreciation and amortization(3,581)(3,406)
Utility plant, net6,806 6,646 
Other non-regulated, net of accumulated depreciation and amortization
45 years
1 1 
Plant, net6,807 6,647 
Construction work-in-progress414 244 
Property, plant and equipment, net$7,221 $6,891 
SPPC  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Property, plant and equipment, net consists of the following (in millions):
As of
Depreciable LifeSeptember 30,December 31,
20222021
Utility plant:
Electric generation
25 - 60 years
$1,297 $1,163 
Electric transmission
50 - 100 years
982 940 
Electric distribution
20 - 100 years
1,927 1,846 
Electric general and intangible plant
5 - 70 years
215 204 
Natural gas distribution
35 - 70 years
453 438 
Natural gas general and intangible plant
5 - 70 years
15 14 
Common general
5 - 70 years
382 370 
Utility plant5,271 4,975 
Accumulated depreciation and amortization(1,965)(1,854)
Utility plant, net3,306 3,121 
Construction work-in-progress228 219 
Property, plant and equipment, net$3,534 $3,340 
EEGH  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Property, plant and equipment, net consists of the following (in millions):
As of
September 30,December 31,
Depreciable Life20222021
Utility Plant:
Interstate natural gas pipeline assets
18 - 48 years
$8,825 $8,675 
Intangible plant
5 - 20 years
107 110 
Utility plant in-service8,932 8,785 
Accumulated depreciation and amortization(3,002)(2,901)
Utility plant in-service, net5,930 5,884 
Nonutility Plant:
LNG facility40 years4,509 4,475 
Intangible plant14 years25 25 
Nonutility plant in-service4,534 4,500 
Accumulated depreciation and amortization(516)(423)
Nonutility plant in-service, net4,018 4,077 
Plant, net9,948 9,961 
Construction work-in-progress240 239 
Property, plant and equipment, net$10,188 $10,200 

Construction work-in-progress includes $208 million and $209 million as of September 30, 2022 and December 31, 2021, respectively, related to the construction of utility plant.
EGTS  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Net Property, Plant and Equipment, NetProperty, plant and equipment, net consists of the following (in millions):
As of
September 30,December 31,
Depreciable Life20222021
Interstate natural gas pipeline and storage assets
18 - 48 years
$6,625 $6,517 
Intangible plant
11 - 21 years
73 74 
Plant in-service6,698 6,591 
Accumulated depreciation and amortization(2,411)(2,339)
Plant in-service, net4,287 4,252 
Construction work-in-progress188 188 
Property, plant and equipment, net$4,475 $4,440