Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows from Operating Activities
Net income	$ 129	$ 59
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Provisions for losses	64	62
Amortization of underwriting expense	7	6
Deferred taxes	(42)	(20)
Changes in operating assets and liabilities:
Interest, taxes and other amounts due to/from affiliates	23	229
Other operating assets and liabilities	(290)	27
Net cash (used in) provided by operating activities	(109)	363
Cash Flows from Investing Activities
Net increase in Card Member receivables and loans	(4,527)	(1,511)
Net decrease (increase) in loans to affiliates and other	1,365	(572)
Net increase (decrease) in due to/from affiliates	1,083	(75)
Net cash used in investing activities	(2,079)	(2,158)
Cash Flows from Financing Activities
Net decrease in short-term debt	(1,166)	(1,566)
Net increase in short-term debt to affiliates	3,796	400
Proceeds from long-term debt	0	4,480
Principal payments of long-term debt	(447)	(1,500)
Net cash provided by financing activities	2,183	1,814
Effect of foreign currency exchange rates on cash and cash equivalents	(1)	15
Net (decrease) increase in cash, cash equivalents and restricted cash	(6)	34
Cash, cash equivalents and restricted cash at beginning of period	296	1,211
Cash, cash equivalents and restricted cash at end of period	$ 290	$ 1,245