Member's Equity - MidAmerican Funding (Details) - MidAmerican Funding, LLC - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Jan. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Distribution paid to parent		$ 69
Subsequent event
Class of Stock [Line Items]
Distribution paid to parent	$ 100

Amount of cash distribution paid to unit-holder of limited liability company (LLC).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration