Subsidiary Debt - PacifiCorp - Annual Payment on Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 1,839
Long-term Debt, Maturities, Repayments of Principal in Year Two	1,848
Long-term Debt, Maturities, Repayments of Principal in Year Three	3,200
Long-term Debt, Maturities, Repayments of Principal in Year Four	2,710
Long-term Debt, Maturities, Repayments of Principal in Year Five	2,525
Long-term Debt, Maturities, Repayments of Principal after Year Five	37,637
Par value	49,759
Long-term Debt	49,866	$ 39,353
PacifiCorp [Member]
Debt Instrument [Line Items]
Long-term Debt	8,612	$ 7,658
PacifiCorp [Member] \| Long-term Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	420
Long-term Debt, Maturities, Repayments of Principal in Year Two	605
Long-term Debt, Maturities, Repayments of Principal in Year Three	449
Long-term Debt, Maturities, Repayments of Principal in Year Four	591
Long-term Debt, Maturities, Repayments of Principal in Year Five	302
Long-term Debt, Maturities, Repayments of Principal after Year Five	6,300
Par value	8,667
Debt Instrument, Unamortized Premium, Discount and Debt Issuance Cost	(55)
Long-term Debt	$ 8,612

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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