Commitments and Contingencies – Hydroelectric (Details) - PacifiCorp [Member] $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Hydroelectric [Line Items]
Capital expenditures required by hydroelectric licenses	$ 182
Klamath Hydroelectric System [Member]
Hydroelectric [Line Items]
Dam removal cost limit	200
Additional dam removal costs, California bond measure	250
Additional Contingency Funding	45
Hydroelectric Dam Removal Cost Funding	450
Klamath Relicensing and Settlement Costs	$ 21