Revenue from Contract with Customer Revenue from Contract with Customer PAC (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 14,837	$ 14,972
Revenues	19,844	19,787	$ 18,614
Non-contracts with customer revenue [Member]
Revenue from External Customer [Line Items]
Revenues	534	601
PacifiCorp [Member]
Revenue from External Customer [Line Items]
Revenues	5,068	5,026	$ 5,237	$ 5,201	$ 5,232
PacifiCorp [Member] | Non-contracts with customer revenue [Member]
Revenue from External Customer [Line Items]
Revenues	82	136
Regulated Operation [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,433	13,612
Regulated Operation [Member] | Regulated retail electric [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	9,465	9,419
Regulated Operation [Member] | Regulated wholesale [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	457	501
Regulated Operation [Member] | Regulated transmission and distribution [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,819	1,846
Regulated Operation [Member] | Other customer revenue [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2	2
Regulated Operation [Member] | PacifiCorp [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,986	4,890
Regulated Operation [Member] | PacifiCorp [Member] | Regulated retail electric [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,711	4,656
Regulated Operation [Member] | PacifiCorp [Member] | Regulated wholesale [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	99	55
Regulated Operation [Member] | PacifiCorp [Member] | Regulated transmission and distribution [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	98	103
Regulated Operation [Member] | PacifiCorp [Member] | Other customer revenue [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	78	76
Regulated Operation [Member] | PacifiCorp [Member] | Residential [Member] | Regulated retail electric [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,783	1,737
Regulated Operation [Member] | PacifiCorp [Member] | Commercial [Member] | Regulated retail electric [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,522	1,513
Regulated Operation [Member] | PacifiCorp [Member] | Industrial [Member] | Regulated retail electric [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,176	1,172
Regulated Operation [Member] | PacifiCorp [Member] | Other [Member] | Regulated retail electric [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 230	$ 234