Consolidated Statement of Cash Flows (Textuals) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Non cash investing activities
Replacement of due from affiliate balance with new loan arrangement with affiliates	[1]	$ 0	$ 2,129	$ 0

[1] To more effectively manage inter-affiliate funding, Credco entered into new loan agreements in July 2017 with American Express Limited and American Express International, Inc. The new loans were funded by the assignment of its exist ing loan to American Express Company and its outstanding due from affiliate balance with TRS