Commitments and Contingencies - Cabin Creek (Details) - USD ($) $ in Millions	Feb. 03, 2025	Dec. 31, 2023	Dec. 31, 2015
Public Utilities, General Disclosures [Line Items]
Cabin Creek estimated costs			$ 88
Cabin Creek actual costs		$ 110
Subsequent Event
Public Utilities, General Disclosures [Line Items]
CPUC Staff recommended disallowance	$ 21
UCA recommended disallowance - minimum	71
UCA recommended disallowance - maximum	$ 138