FINANCIAL INSTRUMENTS - Fair Value of Derivatives (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Assets
Derivative, gross notional	$ 95,874,000,000	$ 98,018,000,000
Amount	3,065,000,000	2,572,000,000
Netting adjustments offset in statement of financial position	(647,000,000)	(546,000,000)
Cash collateral offset in statement of financial position	(1,935,000,000)	(1,286,000,000)
Net derivatives	483,000,000	740,000,000
Net accrued interest	0	182,000,000
Securities held as collateral not offset in statement of financial position	(2,000,000)	(469,000,000)
Net amount	480,000,000	452,000,000
Liabilities
Amount	1,118,000,000	853,000,000
Netting adjustments offset in statement of financial position	(647,000,000)	(546,000,000)
Cash collateral offset in statement of financial position	(104,000,000)	(105,000,000)
Net derivatives	367,000,000	202,000,000
Net accrued interest	0	1,000,000
Securities held as collateral not offset in statement of financial position	0	0
Net amount	367,000,000	203,000,000
Excess cash collateral received	3,000,000	104,000,000
Excess cash collateral posted	805,000,000	603,000,000
Net accrued interest	292,000,000	207,000,000
Net cash collateral posted	802,000,000	499,000,000
Excess securities collateral received	0	27,000,000
GE Capital
Assets
Derivative, gross notional	45,672,000,000	55,704,000,000
Liabilities
Total net cash collateral received on derivatives	3,289,000,000	1,584,000,000
Excess cash collateral received	4,203,000,000	2,294,000,000
Excess cash collateral posted	914,000,000	710,000,000
Interest rate contracts | GE Capital
Liabilities
Total net cash collateral received on derivatives	1,968,000,000	695,000,000
Derivatives accounted for as hedges
Assets
Derivative, gross notional	28,011,000,000	30,961,000,000
Amount	2,077,000,000	1,734,000,000
Liabilities
Amount	135,000,000	57,000,000
Derivatives accounted for as hedges | Interest rate contracts
Assets
Derivative, gross notional	20,500,000,000	23,918,000,000
Amount	1,912,000,000	1,636,000,000
Liabilities
Amount	7,000,000	11,000,000
Derivatives accounted for as hedges | Currency exchange contracts
Assets
Derivative, gross notional	7,512,000,000	7,044,000,000
Amount	165,000,000	99,000,000
Liabilities
Amount	128,000,000	46,000,000
Derivatives not accounted for as hedges
Assets
Derivative, gross notional	67,863,000,000	67,056,000,000
Amount	988,000,000	838,000,000
Liabilities
Amount	983,000,000	796,000,000
Derivatives not accounted for as hedges | Interest rate contracts
Assets
Derivative, gross notional	448,000,000	3,185,000,000
Amount	6,000,000	18,000,000
Liabilities
Amount	1,000,000	12,000,000
Derivatives not accounted for as hedges | Currency exchange contracts
Assets
Derivative, gross notional	65,379,000,000	62,165,000,000
Amount	764,000,000	697,000,000
Liabilities
Amount	913,000,000	744,000,000
Derivatives not accounted for as hedges | Other contracts
Assets
Derivative, gross notional	2,036,000,000	1,706,000,000
Amount	218,000,000	123,000,000
Liabilities
Amount	$ 71,000,000	$ 40,000,000