GENERAL INFORMATION AND OTHER FINANCIAL DATA - OTHER NONCONTROLLING INTERESTS (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Noncontrolling Interest [Line Items]
Other noncontrolling interests	$ 1,426	$ 1,418	[1]
IEnova [Member] | Sempra Infrastructure
Noncontrolling Interest [Line Items]
Ownership percentage	20.00%	20.00%
Other noncontrolling interests	$ 1,387	$ 1,384
IEnova subsidiaries [Member] | Sempra Infrastructure
Noncontrolling Interest [Line Items]
Other noncontrolling interests	$ 39	$ 34
IEnova subsidiaries [Member] | Sempra Infrastructure | Minimum
Noncontrolling Interest [Line Items]
Ownership percentage	0.10%	0.10%
IEnova subsidiaries [Member] | Sempra Infrastructure | Maximum
Noncontrolling Interest [Line Items]
Ownership percentage	16.60%	16.60%

[1] Derived from audited financial statements.