Income Taxes (Tables)

9 Months Ended

Sep. 30, 2020

Income Tax Disclosure [Abstract]

Summary of the Provision for Income Taxes

The following table summarizes our income tax expense (benefit) (in millions, except percentages):

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2020			2019			2020			2019
Income (loss) before income taxes	$	825		$	(1,501)		$	(145)		$	3,259
Income tax expense (benefit)	$	472		$	(333)		$	1,310		$	584
Effective tax rate	57.2		%	22.2		%	(903.4)		%	17.9		%