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Utility Plant and Nonutility Property (Tables)
12 Months Ended
Dec. 31, 2022
Utility Plant And Non Utility Property [Abstract]  
Property, Plant and Equipment

Major classes of utility plant and other property and their respective balances at December 31, 2022 and 2021 were as follows:

 

At December 31,

 

2022

 

 

2021

 

(millions)

 

 

 

 

 

 

Gross utility plant:

 

 

 

 

 

 

Generation

 

$

6,108

 

 

$

6,053

 

Transmission

 

 

2,145

 

 

 

2,037

 

Distribution

 

 

5,472

 

 

 

5,191

 

Storage

 

 

76

 

 

 

76

 

General and other

 

 

630

 

 

 

601

 

Intangible

 

 

257

 

 

 

242

 

Construction work in progress

 

 

541

 

 

 

481

 

Nuclear fuel

 

 

550

 

 

 

603

 

Total gross utility plant

 

$

15,779

 

 

$

15,284

 

Gross nonutility property

 

$

21

 

 

$

44

 

Schedule of Jointly Owned Utility Plants

At December 31,

 

2022

 

2021

 

 

Summer Unit 1

 

Summer Unit 1

Percent owned

 

66.7%

 

66.7%

Plant in service

 

$

1.6

 

billion

 

$

1.6

 

billion

Accumulated depreciation

 

$

751

 

million

 

$

725

 

million

Construction work in progress

 

$

87

 

million

 

$

76

 

million