FINANCIAL INSTRUMENTS - Derivatives and Hedging, Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Total gross notional amount	$ 92,529	$ 98,018
Net cash collateral posted	792	499
Cash collateral received	90	104
Cash collateral posted	882	603
Excess securities collateral received	0	27
GE
Derivative [Line Items]
Total gross notional amount	48,519	42,314
GE Capital
Derivative [Line Items]
Total gross notional amount	44,010	55,704
Net cash collateral received on derivatives	3,603	1,584
Cash collateral received	4,620	2,294
Cash collateral posted	1,017	710
GE Capital | Interest Rate Contract [Member]
Derivative [Line Items]
Net cash collateral received on derivatives	$ 2,595	$ 902