XML 47 R34.htm IDEA: XBRL DOCUMENT v3.22.4
Regulatory Assets and Liabilities, Regulatory Assets (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Regulatory Assets [Line Items]    
Regulatory Asset, Current $ 217 $ 193
Regulatory Asset, Noncurrent 359 380
Regulatory assets not currently earning a return 48 292
Pension and Retiree Medical Obligations    
Regulatory Assets [Line Items]    
Regulatory Asset, Current 2 11 [1]
Regulatory Asset, Noncurrent 146 135 [1]
Texas revenue surcharge [Member]    
Regulatory Assets [Line Items]    
Regulatory Asset, Current 69 20 [1]
Regulatory Asset, Noncurrent $ 0 64 [1]
Texas revenue surcharge [Member] | Minimum [Member]    
Regulatory Assets [Line Items]    
Regulatory Asset, Amortization Period 1 year  
Excess deferred taxes - TCJA    
Regulatory Assets [Line Items]    
Regulatory Asset, Current $ 1 2 [1]
Regulatory Asset, Noncurrent 48 50 [1]
Recoverable Deferred Taxes on AFUDC Recorded in Plant    
Regulatory Assets [Line Items]    
Regulatory Asset, Current 0 0 [1]
Regulatory Asset, Noncurrent 40 41 [1]
Net AROs    
Regulatory Assets [Line Items]    
Regulatory Asset, Current [2] 0 0 [1]
Regulatory Asset, Noncurrent [2] 48 40 [1]
Losses on Reacquired Debt    
Regulatory Assets [Line Items]    
Regulatory Asset, Current 1 1 [1]
Regulatory Asset, Noncurrent 19 19 [1]
Deferred Fuel Costs    
Regulatory Assets [Line Items]    
Regulatory Asset, Current 136 146 [1]
Regulatory Asset, Noncurrent $ 34 4 [1]
Deferred Fuel Costs | Minimum [Member]    
Regulatory Assets [Line Items]    
Regulatory Asset, Amortization Period 1 year  
Deferred Fuel Costs | Maximum [Member]    
Regulatory Assets [Line Items]    
Regulatory Asset, Amortization Period 3 years  
Other    
Regulatory Assets [Line Items]    
Regulatory Asset, Current $ 8 13 [1]
Regulatory Asset, Noncurrent $ 24 $ 27 [1]
[1] Prior period amounts have been restated to conform with current year presentation.
[2] Includes amounts recorded for future recovery of AROs.