CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - SCG - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net (loss) income	$ 1,463	$ 4,105	$ 2,362
Other comprehensive income (loss):
Total other comprehensive (loss) income	171	422	(140)
Pretax amount
Net (loss) income	1,417	5,368	2,585
Other comprehensive income (loss):
Financial instruments	191	(146)	(161)
Pension and other postretirement benefits	28	11	25
Total other comprehensive (loss) income	213	412	(179)
Comprehensive income	1,630	5,780	2,406
Income tax (expense) benefit
Net (loss) income	(99)	(1,435)	(387)
Other comprehensive income (loss):
Financial instruments	(47)	33	53
Pension and other postretirement benefits	(6)	1	(7)
Total other comprehensive (loss) income	(53)	34	46
Comprehensive income	(152)	(1,401)	(341)
Net-of-tax amount
Net (loss) income	1,318	3,933	2,198
Other comprehensive income (loss):
Financial instruments	144	(113)	(108)
Pension and other postretirement benefits	22	12	18
Total other comprehensive (loss) income	160	446	(133)
Comprehensive income	1,478	4,379	2,065
SoCalGas
Net (loss) income	(426)	505	642
Other comprehensive income (loss):
Total other comprehensive (loss) income		(8)	1
SoCalGas | Pretax amount
Net (loss) income	(736)	601	762
Other comprehensive income (loss):
Financial instruments			1
Pension and other postretirement benefits		(12)	1
Total other comprehensive (loss) income		(12)	2
Comprehensive income	(736)	589	764
SoCalGas | Income tax (expense) benefit
Net (loss) income	310	(96)	(120)
Other comprehensive income (loss):
Financial instruments			0
Pension and other postretirement benefits		4	(1)
Total other comprehensive (loss) income		4	(1)
Comprehensive income	310	(92)	(121)
SoCalGas | Net-of-tax amount
Net (loss) income	(426)	505	642
Other comprehensive income (loss):
Financial instruments			1
Pension and other postretirement benefits		(8)	0
Total other comprehensive (loss) income		(8)	1
Comprehensive income	$ (426)	$ 497	$ 643