ACQUISITIONS, DIVESTITURES AND DISCONTINUED OPERATIONS - DISCONTINUED OPERATIONS (Details) $ in Millions			3 Months Ended		6 Months Ended
	Jun. 24, 2020 USD ($)	Apr. 24, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) company	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income tax			$ 1,777	$ 78	$ 1,857	$ 36
Earnings attributable to noncontrolling interests			(2)	(8)	(10)	(17)
Earnings from discontinued operations attributable to common shares			1,775	70	1,847	19
Cash and cash equivalents			0		0		$ 75
Current assets			0		0		445	[1]
Noncurrent assets			0		0		3,513	[1]
Current liabilities			0		0		444	[1]
Noncurrent liabilities			0		0		1,052	[1]
Discontinued Operations, Held-for-sale [Member] | Sempra South American Utilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration to be received	$ 2,232
Pretax gain on sale	644
Revenues			170	403	570	824
Cost of sales			(111)	(251)	(364)	(516)
Gain on sale of discontinued operations	$ 255		2,915	0	2,915	0
Operating expenses			(20)	(40)	(66)	(85)
Interest and other			(3)	(6)	(3)	(9)
Income before income taxes and equity earnings			2,951	106	3,052	214
Income tax expense			(1,174)	(29)	(1,195)	(180)
Equity earnings			0	1	0	2
Income from discontinued operations, net of income tax			1,777	78	1,857	36
Earnings from discontinued operations attributable to common shares			1,775	$ 70	1,847	$ 19
Cash and cash equivalents			4,600		4,600		74
Restricted cash							1
Accounts receivable, net							303
Due from unconsolidated affiliates							2
Inventories							36
Other current assets							29
Current assets							445
Due from unconsolidated affiliates							54
Goodwill and other intangible assets							801
Property, plant and equipment, net							2,618
Other noncurrent assets							40
Noncurrent assets							3,513
Short-term debt							52
Accounts payable							201
Current portion of long-term debt and finance leases							85
Other current liabilities							106
Current liabilities							444
Long-term debt and finance leases							702
Deferred income taxes							284
Other noncurrent liabilities							66
Noncurrent liabilities							$ 1,052
Cumulative foreign translation adjustments			$ 645		$ 645
Discontinued Operations, Held-for-sale [Member] | Luz Del Sur [Member] | Sempra South American Utilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration to be received		$ 3,549
Pretax gain on sale		2,271
Gain on sale of discontinued operations		$ 1,499
Luz Del Sur [Member] | Discontinued Operations, Held-for-sale [Member] | Sempra South American Utilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest (as a percent)		83.60%	83.60%		83.60%
Number of energy services companies | company					2
Chilquinta Energia [Member] | Discontinued Operations, Held-for-sale [Member] | Sempra South American Utilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest (as a percent)	100.00%		100.00%		100.00%
Eletrans [Member] | Discontinued Operations, Held-for-sale [Member] | Sempra South American Utilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest (as a percent)	50.00%

[1] Derived from audited financial statements.