Revenue from Contracts with Customers - PAC - Customer Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue		$ 4,712	$ 3,516
Operating revenue		6,081	4,527
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		137	118
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		4,094	3,213
Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		2,108	2,061
Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		193	77
Regulated Operation [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		496	462
Regulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		25	27
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		1,242	1,206
PacifiCorp [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		13	36
PacifiCorp [Member] | Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,229	1,170
PacifiCorp [Member] | Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,145	1,122
PacifiCorp [Member] | Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	36	0
PacifiCorp [Member] | Regulated Operation [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		25	22
PacifiCorp [Member] | Regulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		23	26
PacifiCorp [Member] | Regulated Operation [Member] | Residential [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		483	460
PacifiCorp [Member] | Regulated Operation [Member] | Commercial [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		359	358
PacifiCorp [Member] | Regulated Operation [Member] | Industrial [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		271	277
PacifiCorp [Member] | Regulated Operation [Member] | Other [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		$ 32	$ 27

[1] Includes net payments to counterparties for the financial settlement of certain non-derivative forward contracts for energy sales