Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Discount revenue earned from purchased Card Member receivables and Card Member loans	$ 305	$ 248	$ 608	$ 462
Interest income from affiliates and other	95	90	205	179
Finance revenue	18	13	37	28
Total revenues	418	351	850	669
Expenses
Provisions for losses	51	58	114	122
Interest expense	131	173	300	304
Interest expense to affiliates	131	40	235	69
Other, net	(25)	(13)	(48)	(27)
Total expenses	288	258	601	468
Pretax income	130	93	249	201
Income tax provision (benefit)	18	5	34	(16)
Net income	$ 112	$ 88	$ 215	$ 217