Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net (loss) income	$ (61)	$ 726
Other comprehensive income, net of tax
Unrealized gains on available-for-sale investment securities, net of tax	256	31
Unrealized losses on cash flow hedges, net of tax	(3)	(12)
Unrealized pension and post-retirement plan gains, net of tax	0	1
Other comprehensive income	253	20
Comprehensive income	$ 192	$ 746