Consolidated Statements of Operations (Unaudited) - EEGH - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating revenue	$ 6,081	$ 4,527
Operating expenses:
Total operating expenses	4,748	3,608
Operating income	1,333	919
Other income (expense):
Interest expense	(530)	(483)
Allowance for equity funds	26	34
Interest and dividend income	21	20
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax expense (benefit) and equity income (loss)	(246)	507
Income tax benefit	(535)	(184)
Equity income	(179)	(18)
Net income	110	673
Net income attributable to noncontrolling interests	106	3
Net income (loss) attributable to parent	4	670
Eastern Energy Gas Holdings, LLC [Member]
Operating revenue	486	556
Operating expenses:
Cost of gas	0	8
Operations and maintenance	124	168
Depreciation and amortization	80	93
Property and other taxes	39	39
Total operating expenses	243	308
Operating income	243	248
Other income (expense):
Interest expense	(44)	(58)
Allowance for equity funds	2	5
Interest and dividend income	0	30
Other, net	1	14
Total other income (expense)	(41)	(9)
Income before income tax expense (benefit) and equity income (loss)	202	239
Income tax benefit	27	52
Equity income	16	15
Net income	191	202
Net income attributable to noncontrolling interests	102	33
Net income (loss) attributable to parent	$ 89	$ 169