Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 1) -Obligations, Assets and Funded Status
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
country
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Amounts recognized in consolidated balance sheets      
Pension assets $ 1,042 $ 1,001  
Pension and OPEB benefits 630 591  
Other Pension Plan      
Change in plan assets      
Employer contributions $ 16 15  
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 3.00%    
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 $ 227 246  
Interest cost 7 10 $ 11
Plan participants' contributions 9 14  
Actuarial loss 14    
Benefits paid directly by employer or from fund (38) (43)  
Benefit obligation at the end of the year $ 219 $ 227 246
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% 11.00%  
Funded status      
Funded status at end of year $ (219) $ (227)  
Amounts recognized in consolidated balance sheets      
Accrued compensation, benefits and retirement costs (20) (21)  
Liability, Other Postretirement Defined Benefit Plan, Noncurrent (199) (206)  
Net amount recognized (219) (227)  
Amounts recognized in accumulated other comprehensive loss consist of:      
Net actuarial gain (10) (25)  
Prior service cost (credit) (4) (4)  
Net amount recognized (14) (29)  
UNITED KINGDOM      
Change in benefit obligation      
Benefit obligation at the beginning of the year 1,851 1,550  
Service cost 29 26 29
Interest cost 36 43 41
Actuarial loss 136 232  
Benefits paid directly by employer or from fund (72) (62)  
Exchange rate changes 70 62  
Benefit obligation at the end of the year 2,050 1,851 1,550
Change in plan assets      
Fair value of plan assets at the beginning of the year 2,010 1,782  
Actual return on plan assets 268 193  
Employer contributions 48 28  
Benefits paid from Fund (72) (62)  
Exchange rate changes 83 69  
Fair value of plan assets at the end of the year 2,337 2,010 1,782
Funded status      
Funded status at end of year 287 159  
Amounts recognized in consolidated balance sheets      
Pension assets 287 159  
Net amount recognized 287 159  
Amounts recognized in accumulated other comprehensive loss consist of:      
Net actuarial gain 250 323  
Prior service cost (credit) 19 22  
Net amount recognized 269 345  
UNITED STATES      
Change in benefit obligation      
Benefit obligation at the beginning of the year 2,916 2,562  
Service cost 133 116 120
Interest cost 95 108 98
Actuarial loss 224 296  
Benefits paid directly by employer or from fund (224) (150)  
Benefit obligation at the end of the year 3,122 2,916 2,562
Change in plan assets      
Fair value of plan assets at the beginning of the year 3,357 2,937  
Actual return on plan assets 274 493  
Employer contributions 22 77  
Benefits paid from Fund (224) (150)  
Exchange rate changes 0 0  
Fair value of plan assets at the end of the year 3,429 3,357 $ 2,937
Funded status      
Funded status at end of year 307 441  
Amounts recognized in consolidated balance sheets      
Pension assets 755 842  
Accrued compensation, benefits and retirement costs (17) (16)  
Pension and OPEB benefits 431 385  
Net amount recognized 307 441  
Amounts recognized in accumulated other comprehensive loss consist of:      
Net actuarial gain 714 611  
Prior service cost (credit) 6 7  
Net amount recognized 720 618  
UNITED STATES | Nonqualified Plan      
Change in benefit obligation      
Benefits paid directly by employer or from fund $ (22) $ (16)