Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 1) -Obligations, Assets and Funded Status

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PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 1) -Obligations, Assets and Funded Status
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
country
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Amounts recognized in consolidated balance sheets      
Pension assets - long-term $ 929 $ 1,043  
Pensions - long-term liabilities (532) (619)  
Pension Plan      
Change in plan assets      
Exchange rate changes 5 (30) $ 28
Other Pension Plan      
Change in plan assets      
Employer contributions $ 11 11  
Less Significant Defined Benefit or Other Postretirement Plans Applicable to Number of Countries | country 14    
Maximum Percentage of Defined Benefit Plans Assets Included in Other Liabilities and Deferred Revenue 4.00%    
Maximum Percentage of Defined Benefit Plans, Obligations Included in Other Liabilities and Deferred Revenue 5.00%    
Other Postretirement Benefit Plan      
Change in benefit obligation      
Benefit obligation at the beginning of the year $ 318 364  
Interest cost 11 14 16
Plan participants' contributions 21 24  
Actuarial (gain) loss (51) (35)  
Benefits paid directly by employer or from fund (53) (49)  
Benefit obligation at the end of the year $ 246 $ 318 364
Change in plan assets      
Less Significant Defined Benefit or Other Postretirement Plans Applicable to Number of Countries | country 4    
Maximum Percentage of Defined Benefit Plans, Obligations Included in Other Liabilities and Deferred Revenue 9.00% 6.00%  
Funded status      
Funded status at end of year $ (246) $ (318)  
Amounts recognized in consolidated balance sheets      
Accrued compensation, benefits and retirement costs - current liabilities (22) (29)  
Postretirement benefits other than pensions-long-term liabilities (224) (289)  
Net amount recognized (246) (318)  
Amounts recognized in accumulated other comprehensive loss consist of:      
Net actuarial (gain) loss (24) 27  
Prior service cost (4) (4)  
Net amount recognized (28) 23  
UNITED STATES      
Change in plan assets      
Fair value of plan assets at the beginning of the year 3,166    
Fair value of plan assets at the end of the year 2,937 3,166  
UNITED STATES | Pension Plan      
Change in benefit obligation      
Benefit obligation at the beginning of the year 2,765 2,661  
Service cost 120 107 90
Interest cost 98 106 109
Actuarial (gain) loss (212) 61  
Benefits paid directly by employer or from fund (193) (155)  
Plan amendment 0 0  
Benefit obligation at the end of the year 2,562 2,765 2,661
Change in plan assets      
Fair value of plan assets at the beginning of the year 3,166 2,751  
Actual return on plan assets (36) 351  
Employer contributions 0 219  
Benefits paid from Fund (193) (155)  
Exchange rate changes 0 0  
Fair value of plan assets at the end of the year 2,937 3,166 2,751
Funded status      
Funded status at end of year 375 401  
Amounts recognized in consolidated balance sheets      
Pension assets - long-term 697 745  
Accrued compensation, benefits and retirement costs - current liabilities (14) (14)  
Pensions - long-term liabilities (308) (330)  
Net amount recognized 375 401  
Amounts recognized in accumulated other comprehensive loss consist of:      
Net actuarial (gain) loss 635 649  
Prior service cost 8 8  
Net amount recognized 643 657  
UNITED KINGDOM      
Change in plan assets      
Fair value of plan assets at the beginning of the year 1,960    
Fair value of plan assets at the end of the year 1,782 1,960  
UNITED KINGDOM | Pension Plan      
Change in benefit obligation      
Benefit obligation at the beginning of the year 1,662 1,451  
Service cost 29 26 21
Interest cost 41 40 50
Actuarial (gain) loss (46) 53  
Benefits paid directly by employer or from fund (62) (54)  
Plan amendment 15 [1] 0  
Exchange rate changes (89) 146  
Benefit obligation at the end of the year 1,550 1,662 1,451
Change in plan assets      
Fair value of plan assets at the beginning of the year 1,960 1,753  
Actual return on plan assets (33) 78  
Employer contributions 21 9  
Benefits paid from Fund (62) (54)  
Exchange rate changes (104) 174  
Fair value of plan assets at the end of the year 1,782 1,960 $ 1,753
Funded status      
Funded status at end of year 232 298  
Amounts recognized in consolidated balance sheets      
Pension assets - long-term 232 298  
Net amount recognized 232 298  
Amounts recognized in accumulated other comprehensive loss consist of:      
Net actuarial (gain) loss 230 207  
Prior service cost 16 0  
Net amount recognized 246 207  
Nonqualified Plan | UNITED STATES | Pension Plan      
Change in benefit obligation      
Benefits paid directly by employer or from fund $ (16) $ (15)  
[1] Guaranteed minimum pension benefits to equalize certain pension benefits between men and women per the United Kingdom court decision.