v3.26.1
Nuclear Decommissioning Trust Funds (Tables)
6 Months Ended
Jun. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Schedule of Unrealized Gain (Loss) on Nuclear Decommissioning Trust Funds
June 30, 2026December 31, 2025
Amortized CostUnrealized GainsUnrealized LossesFair ValueAmortized CostUnrealized GainsUnrealized LossesFair Value
Cash equivalents$$— $— $$16 $— $— $16 
Equity securities389 827 (20)1,196 385 739 (19)1,105 
Debt securities791 (9)786 773 (3)777 
Receivables (payables), net— — — — 
NDT Funds$1,195 $831 $(29)$1,997 $1,176 $746 $(22)$1,900 
Schedule of Available-for-Sale Debt Securities With Unrealized Losses The aggregate fair value of available-for-sale debt securities with unrealized losses as of June 30, 2026 was:
Fair ValueUnrealized Losses
Corporate debt securities$195 $(3)
Municipal debt securities57 (1)
U.S. Government debt securities311 (5)
Debt securities in unrealized loss position$563 $(9)
Schedule of Maturities for Available-for-Sale Debt Securities
The contractual maturities for available-for-sale debt securities presented on the Consolidated Balance Sheets were:
June 30,
2026
December 31,
2025
Maturities within one year$21 $23 
Maturities within two to five years221 233 
Maturities thereafter544 521 
Debt securities, fair value$786 $777 
Schedule of Sales Proceeds, Gains, and Losses for Available-for-Sale Debt Securities
The sales proceeds, gains, and losses for available-for-sale debt securities for the periods were:
 Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Sales proceeds of NDT funds investments (a)
$56 $592 $136 $1,168 
Realized gains
Realized losses(1)(3)(1)(5)
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(a)Sales proceeds are used to pay income taxes and trust management fees. Remaining proceeds are reinvested in the NDT.
Schedule of Unrealized Gain (Loss) on Investments
The net unrealized gains and losses recognized associated with equity securities still held at the end of the reporting periods were:
 Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Equity securities, unrealized gains (losses)$124 $61 $88 $37