Income Taxes (Tables)

9 Months Ended

Sep. 30, 2022

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

The following tables reconcile the effective tax rate to the federal income tax statutory rate for the three and nine months ended September 30, 2022 and 2021:

	For the Three Months						For the Nine Months
	Ended September 30,						Ended September 30,
Reconciliation of federal income tax expense:	2022			2021			2022			2021
	(In millions)
Income from Continuing Operations, before income taxes	$	449		$	504		$	1,061		$	1,080
Federal income tax expense at statutory rate (21%)	$	94		$	106		$	223		$	227
Increases (reductions) in taxes resulting from:
State income taxes, net of federal tax benefit	25			31			68			80
AFUDC equity and other flow-through	(8)			(9)			(23)			(26)
Excess deferred tax amortization due to the Tax Act	(15)			(13)			(46)			(39)
Federal tax credits claimed	(3)			(6)			(3)			(34)
Valuation allowances	(8)			—			26			—
Remeasurement of state deferred taxes	4			—			(22)			9
Nondeductible DPA monetary penalty	—			—			—			52
Uncertain tax positions	2			(25)			2			(19)
Other, net	14			4			12			21
Total income taxes	$	105		$	88		$	237		$	271
Effective income tax rate	23.4		%	17.5		%	22.3		%	25.1		%