Income Taxes (Tables)

9 Months Ended

Sep. 30, 2020

Income Tax Disclosure [Abstract]

Schedule of income tax provision and effective tax rate

Income tax benefit (provision) and effective tax rate are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
	(in millions)
Current tax benefit (provision)	$	(1)		$	—		$	10		$	—
Deferred tax benefit (provision)	(3)			(72)			8			(127)
Income tax benefit (provision)	$	(4)		$	(72)		$	18		$	(127)
Effective tax rate	(26		%)	24		%	10		%	24		%