Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS (Details)

v3.10.0.1
FAIR VALUE MEASUREMENTS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Assets and liabilities measured at fair value on a recurring basis      
Equity Method Investment, Other than Temporary Impairment $ 591    
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net   $ 150  
Derivative, Collateral, Obligation to Return Cash 96 55  
Derivative, Collateral, Right to Reclaim Cash 4 2  
Level 1      
Assets and liabilities measured at fair value on a recurring basis      
Equity securities with changes in fair value recognized in income 1,681 212  
Debt Securities 0 1,899  
Derivatives 2 7  
Total assets 1,683 2,118  
Derivatives 14 3  
Total liabilities 14 3  
Level 2      
Assets and liabilities measured at fair value on a recurring basis      
Equity securities with changes in fair value recognized in income 186 127  
Debt Securities 5,018 5,739  
Derivatives 313 250  
Total assets 5,517 6,116  
Derivatives 221 262  
Total liabilities 221 262  
Level 3      
Assets and liabilities measured at fair value on a recurring basis      
Equity securities with changes in fair value recognized in income 6 3  
Debt Securities 19 169  
Derivatives 0 0  
Total assets 25 172  
Derivatives 0 0  
Total liabilities 0 0  
Other [Member]      
Assets and liabilities measured at fair value on a recurring basis      
Equity securities with changes in fair value recognized in income 61 65  
Debt Securities 0 0  
Derivatives 0 0  
Total assets 61 65  
Derivatives 0 0  
Total liabilities 0 0  
Netting Adjustment      
Assets and liabilities measured at fair value on a recurring basis      
Equity securities with changes in fair value recognized in income 0 0  
Debt Securities 0 0  
Derivatives (261) (198)  
Total assets (261) (198)  
Derivatives (182) (147)  
Total liabilities (182) (147)  
Fair Value Measurements      
Assets and liabilities measured at fair value on a recurring basis      
Equity securities with changes in fair value recognized in income 1,934 407  
Debt Securities 5,037 7,807  
Derivatives 54 59  
Total assets 7,025 8,273  
Derivatives 53 118  
Total liabilities 53 118  
Other assets | Fair Value Measurements      
Assets and liabilities measured at fair value on a recurring basis      
Derivatives 54 59  
Accounts Payable and Accrued Liabilities | Fair Value Measurements      
Assets and liabilities measured at fair value on a recurring basis      
Derivatives   28  
Liabilities held for sale - discontinued operations [Member] | Fair Value Measurements      
Assets and liabilities measured at fair value on a recurring basis      
Derivatives 3 12  
Other liabilities | Fair Value Measurements      
Assets and liabilities measured at fair value on a recurring basis      
Derivatives 50 78  
Pension benefits      
Assets and liabilities measured at fair value on a recurring basis      
Defined Benefit Plan, Plan Assets, Amount $ 7,409 $ 8,843 $ 8,371