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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME , UTILITY (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Pension and other postretirement benefit plans obligations, tax | $ 0 | $ 0 | $ 0 | $ 0
Net unrealized gain (losses) on available for sale securities, tax | 3 | 0 | 5 | 1
Utility |  |  |  |
Pension and other postretirement benefit plans obligations, tax | 0 | 0 | 0 | 0
Net unrealized gain (losses) on available for sale securities, tax | $ 3 | $ 0 | $ 5 | $ 1

X
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