FINANCIAL INSTRUMENTS - Derivatives and Hedging, Narrative (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Total gross notional amount	$ 91,921,000,000	$ 95,647,000,000
Cash collateral received	31,000,000	3,000,000
Cash collateral posted	723,000,000	805,000,000
Net accrued interest	159,000,000	292,000,000
Net cash collateral posted	693,000,000	802,000,000
Excess securities collateral received	15,000,000	0
GE Industrial
Derivative [Line Items]
Total gross notional amount	48,153,000,000	50,202,000,000
GE Capital
Derivative [Line Items]
Total gross notional amount	43,768,000,000	45,445,000,000
Net cash collateral received on derivatives	1,542,000,000	3,289,000,000
Cash collateral received	2,313,000,000	4,203,000,000
Cash collateral posted	771,000,000	914,000,000
GE Capital | Interest rate contracts
Derivative [Line Items]
Net cash collateral received on derivatives	$ 584,000,000	$ 1,968,000,000