Consolidated Statement of Cash Flows (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Statement of Cash Flows [Abstract]
Cash and cash equivalents per Consolidated Balance Sheets		$ 65	$ 102	$ 191	$ 196
Restricted cash included in Other assets per Consolidated Balance Sheets	[1]	95	93	99	100
Total Cash, cash equivalents and restricted cash		$ 160	$ 195	$ 290	$ 296

[1] Represents cash deposited with Amex Bank of Canada relating to the purchase of Card Member receivables and the collateralized loan arrangement for transfer of Card Member loans