COMMITMENTS AND CONTINGENCIES - LESSOR INFORMATION (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessor, Lease, Description [Line Items]
Property, plant and equipment		$ 58,940	$ 53,928	$ 49,329
Accumulated depreciation		(15,046)	(13,925)	(12,877)
Property, plant and equipment, net		43,894	40,003	36,452
Operating leases
2022		272
2023		272
2024		273
2025		272
2026		272
Thereafter		3,031
Total undiscounted cash flows		4,392
Fixed lease payments		256	195	200
Variable lease payments		10	1	6
Total revenues from operating leases		266	196	206
Depreciation expense		1,833	1,646	1,551
Sales-type leases
2022		16
2023		16
2024		17
2025		17
2026		9
Thereafter		0
Total undiscounted cash flows		75
Present value of lease payments (recognized as lease receivable)		55
Difference between undiscounted cash flows and discounted cash flows		20
Income recognized at lease commencement		18	1	0
Interest income		4	1	0
Total revenues from sales-type lease		22	2	0
Other current assets
Sales-type leases
Present value of lease payments (recognized as lease receivable)		9
Other long-term assets
Sales-type leases
Present value of lease payments (recognized as lease receivable)		46
Sempra Infrastructure
Lessor, Lease, Description [Line Items]
Carrying value	$ 44
Net investment in lease	62
Selling profit	$ 18
Operating Leases, Assets
Lessor, Lease, Description [Line Items]
Property, plant and equipment		1,499	1,092	1,038
Accumulated depreciation		(276)	(228)	(179)
Property, plant and equipment, net		1,223	864	859
Operating leases
Depreciation expense		$ 48	$ 39	$ 38