CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - SCG (Parenthetical) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common stock dividends declared (USD per share)	$ 4.40	$ 4.18	$ 3.87
Sale	$ 2,712	$ 28	$ 5
SoCalGas
Preferred stock, dividends declared per share (USD per share)	$ 1.50	$ 1.50	$ 1.50
Common stock dividends declared (USD per share)	$ 0.82	$ 1.10	$ 1.64

Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=123454820&loc=SL4569655-111683

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