Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net (loss) income	$ (368)	$ 753	$ (429)	$ 1,479
Other comprehensive (loss) income, net of tax
Unrealized (losses) gains on available-for-sale investment securities, net of tax	(16)	71	240	102
Unrealized gains (losses) on cash flow hedges, net of tax	4	(18)	1	(30)
Unrealized pension and post-retirement plan gains, net of tax	0	0	0	1
Other comprehensive (loss) income	(12)	53	241	73
Comprehensive (loss) income	$ (380)	$ 806	$ (188)	$ 1,552