COMMITMENTS AND CONTINGENCIES - OTHER LITIGATION (Details) £ in Millions, $ in Millions		1 Months Ended	12 Months Ended
	Mar. 30, 2020 GBP (£)	Oct. 31, 2020 GBP (£)	Dec. 31, 2023 USD ($) claim	Dec. 31, 2023 GBP (£) claim	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Feb. 20, 2024 lawsuit
Loss Contingencies [Line Items]
Equity earnings			$ 1,481		$ 1,498	$ 1,343
RBS Sempra Commodities
Loss Contingencies [Line Items]
Equity earnings							$ 100
Energy Efficiency Program Inquiry fines that reduce revenue			$ 40			$ 50
Energy Future Holdings Corp.
Loss Contingencies [Line Items]
Proof of claims | claim			28,000	28,000
Energy Future Holdings Corp. | Subsequent Event
Loss Contingencies [Line Items]
Number of lawsuits pending | lawsuit								0
HMRC VAT Claim
Loss Contingencies [Line Items]
Damage awarded			$ 10	£ 7.9
HMRC VAT Claim | Plaintiffs
Loss Contingencies [Line Items]
Loss contingency, costs and interest		£ 21.0	27
HMRC VAT Claim | RBS Sempra Commodities
Loss Contingencies [Line Items]
Damage awarded	£ 45.0		$ 57