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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pension and other postretirement benefit plans obligations, tax | $ 8 | $ 3 | $ 7
Net unrealized losses on available for sale securities, tax | 3 | 0 | 0
Pacific Gas & Electric Co (Utility) |  |  |
Pension and other postretirement benefit plans obligations, tax | 2 | 1 | 2
Net unrealized losses on available for sale securities, tax | $ 3 | $ 0 | $ 0

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