CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Net cash provided by/(used in) operating activities	$ 10,007	$ 8,486
Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]
Capital spending	(3,553)	(3,688)
Acquisitions of finance receivables and operating leases	(26,202)	(32,273)
Collections of finance receivables and operating leases	24,974	25,980
Purchases of marketable securities and other investments	(7,670)	(11,725)
Sales and maturities of marketable securities and other investments	8,540	12,756
Settlements of derivatives	83	109
Other	4	(181)
Net cash provided by/(used in) investing activities	(3,824)	(9,022)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]
Cash payments for dividends and dividend equivalents	(1,196)	(1,711)
Purchases of common stock	0	(89)
Net changes in short-term debt	71	(1,735)
Proceeds from issuance of long-term debt	26,233	28,135
Principal payments on long-term debt	(25,767)	(25,299)
Other	(149)	(93)
Net cash provided by/(used in) financing activities	(808)	(792)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	24	(289)
Cash, cash equivalents, and restricted cash at beginning of period (Note 7)	16,907	18,638
Cash, cash equivalents, and restricted cash at end of period (Note 7)	22,117
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	$ 5,399	$ (1,617)