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OTHER CONTINGENCIES AND COMMITMENTS (Oakland Headquarters Lease) (Details) ft² in Thousands, $ in Millions | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Oct. 23, 2020 USD ($) ft²
--- | --- | --- | ---
Operating Leased Assets [Line Items] |  |  |
Term of contract |  |  | 34 years 11 months
Operating lease right of use asset | $ 1,286 | $ 1,234 |
Pacific Gas & Electric Co (Utility) |  |  |
Operating Leased Assets [Line Items] |  |  |
Operating lease right of use asset | 1,285 | $ 1,232 |
Oakland Headquarters Lease | Pacific Gas & Electric Co (Utility) |  |  |
Operating Leased Assets [Line Items] |  |  |
Rentable square feet | ft² |  |  | 910
Lease, option payment letter of credit |  |  | $ 75
Lease, security letter of credit |  |  | 75
Purchase options, land, value |  |  | $ 892
Operating lease right of use asset | 233 |  |
Leasehold improvements | 55 |  |
Leasehold incentives | 42 |  |
Operating lease, right-of-use liability | $ 275 |  |

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