XML 100 R90.htm IDEA: XBRL DOCUMENT v3.25.3
Derivatives and Hedge Accounting Activities (Gains and Losses on Derivatives in Cash Flow Hedging Relationships) (Detail) - Cash Flow Hedges - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI on Derivatives $ (5) [1] $ (10) $ (26) [1] $ 2 [1]
Amount of Gain (Loss) Reclassified From AOCI to Income (10) (11) (30) (33)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment (29) [2] (110) (101) [2] 20 [2]
Virginia Electric and Power Company        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI on Derivatives (2) [1] (10) (9) [1] 2 [1]
Amount of Gain (Loss) Reclassified From AOCI to Income 0 0 0 0
Increase (Decrease) in Derivatives Subject to Regulatory Treatment (29) [2] (109) (102) [2] 20 [2]
Interest Rate        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI on Derivatives [1],[3] (5) (10) (26) 2
Amount of Gain (Loss) Reclassified From AOCI to Income [3] (10) (11) (30) (33)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment [2],[3] (29) (110) (101) 20
Interest Rate | Virginia Electric and Power Company        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI on Derivatives [1],[3] (2) (10) (9) 2
Amount of Gain (Loss) Reclassified From AOCI to Income [3] 0 0 0 0
Increase (Decrease) in Derivatives Subject to Regulatory Treatment [2],[3] $ (29) $ (109) $ (102) $ 20
[1] Amounts deferred into AOCI have no associated effect in the Companies’ Consolidated Statements of Income.
[2] Represents net derivative activity deferred into and amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in the Companies’ Consolidated Statements of Income.
[3] Amounts recorded in the Companies’ Consolidated Statements of Income are classified in interest and related charges.