COMMITMENTS, GUARANTEES, PRODUCT WARRANTIES AND OTHER LOSS CONTINGENCIES - GUARANTEES (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Guarantor Obligations [Line Items]
Liability for indemnification agreements	$ 22,191	$ 22,912
Credit support
Guarantor Obligations [Line Items]
Commitments	1,855
Liability for indemnification agreements RVG	47
Indemnification agreements
Guarantor Obligations [Line Items]
Commitments	1,688
Liability for indemnification agreements RVG	7
Required funding under residual value guarantees	190
Liability for indemnification agreements	277
Indemnification agreements - discontinued operations
Guarantor Obligations [Line Items]
Commitments	2,714
Liability for indemnification agreements	$ 320