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INVESTMENT CONTRACTS, INSURANCE LIABILITIES AND INSURANCE ANNUITY BENEFITS - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended 72 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2024
Insurance [Abstract]          
Expected capital contributions   $ 15,000      
Premium deficiency   9,481      
Impairment of deferred acquisition costs   398      
Impairment of present value of future profits   216      
Increase in future policy benefit reserves   $ 8,867      
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]          
Estimated discount rate   5.70%      
Claims incurred   $ 2,020 $ 1,989 $ 1,761  
Prior year claims   135 123 (24)  
Paid claims   1,670 1,671 1,679  
Reinsurance recoverables, net   2,458 2,038    
Ceded claim reserves   733 594    
Additions to reinsurance recoverables   2,399      
Reinsurance recoveries   454 $ 370 $ 351  
GE Capital | Scenario, Forecast          
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]          
Capital contributions to insurance subsidiaries $ 3,500       $ 11,500
Allowance for Reinsurance Recoverable          
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]          
Allowance for losses   $ 2,185      
Minimum          
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]          
Estimated discount rate   2.60%      
Maximum          
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]          
Estimated discount rate   6.00%