CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Natural Gas	$ 6,333	$ 5,411	$ 5,185
Electric	4,658	4,614	4,263
Energy-related businesses	1,866	1,345	1,381
Total revenues	12,857	11,370	10,829
EXPENSES AND OTHER INCOME
Operation and maintenance	(4,338)	(3,940)	(3,466)
Aliso canyon litigation and regulatory matters	(1,593)	(307)	0
Depreciation and amortization	(1,855)	(1,666)	(1,569)
Franchise fees and other taxes	(596)	(543)	(496)
Impairment losses	(3)	(1)	(43)
Gain (loss) on sale of assets	36	(3)	63
Other income (expense), net	58	(48)	77
Interest income	69	96	87
Interest expense	(1,198)	(1,081)	(1,077)
Income from continuing operations before income taxes and equity earnings	219	1,489	1,734
Income tax expense	(99)	(249)	(315)
Equity earnings	1,343	1,015	580
Income from continuing operations, net of tax	1,463	2,255	1,999
Income from discontinued operations, net of income tax	0	1,850	363
Net income	1,463	4,105	2,362
Earnings attributable to noncontrolling interest	(145)	(172)	(164)
Preferred dividends	(63)	(168)	(142)
Preferred dividends of subsidiary	(1)	(1)	(1)
Earnings attributable to common shares	$ 1,254	$ 3,764	$ 2,055
Basic EPS:
Earnings from continuing operations attributable to common shares	$ 4.03	$ 6.61	$ 6.22
Earning from discontinued operations	0	6.32	1.18
Earnings	$ 4.03	$ 12.93	$ 7.40
Weighted-average common shares outstanding for basic EPS (in shares)	311,755	291,077	277,904
Diluted EPS:
Earnings from continuing operations - Diluted EPS (in dollars per share)	$ 4.01	$ 6.58	$ 6.13
Earnings from discontinued operations	0	6.30	1.16
Earnings	$ 4.01	$ 12.88	$ 7.29
Weighted Average Common Shares Outstanding	313,036	292,252	282,033
Cost of natural gas
EXPENSES AND OTHER INCOME
Operating expenses	$ (1,597)	$ (925)	$ (1,139)
Cost of electric fuel and purchased power
EXPENSES AND OTHER INCOME
Operating expenses	(1,010)	(1,187)	(1,188)
Energy-related businesses cost of sales
EXPENSES AND OTHER INCOME
Operating expenses	$ (611)	$ (276)	$ (344)