Commitments and Contingencies (Upstream Lighting Program) (Details) - Upstream Lighting Program - USD ($) $ in Millions	1 Months Ended		24 Months Ended	36 Months Ended
	Jul. 31, 2022	Jun. 30, 2022	Dec. 31, 2018	Dec. 31, 2019
Commitments and Contingencies
Incentives paid to manufacturers				$ 91.0
Incentives received			$ 3.5
Incentives receivable				$ 1.3
CPUC requested award refund	$ 33.0
Requested manufacturer incentives refund	92.0
Fines	$ 98.0
Remedy offered		$ 21.0