Commitments and Contingencies - PacifiCorp - Hydroelectric (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Hydroelectric [Line Items]
Assets	$ 127,316	$ 100,051	$ 92,189

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details