Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 4)

v3.8.0.1
PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 4) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Net periodic pension and other Postretirement benefit cost      
Corridor Approach for Amortizing Actuarial Gains and Losses 10.00%    
Pension benefits      
Net periodic pension and other Postretirement benefit cost      
Service cost $ 197 $ 239 $ 265
Interest cost 306 319 379
Expected return on plan assets (650) (653) (705)
Amortization of prior service cost (credit) 0 (2) (2)
Amortization of actuarial loss 175 183 199
Net periodic benefit cost 28 86 136
Settlement charge 228 118 149
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment 4 0 0
Special termination benefits 106 37 20
Defined Benefit Plan, Other Cost (Credit) 2 (3) 0
Total cost recognized in the statement of income 368 238 305
Changes in AOCI for our benefit plans, pretax      
Beginning balance in AOCI (2,932) (2,907)  
Recognized prior service cost (credit) 4 (2)  
Recognized net actuarial loss (gain) 403 301  
Prior service credit (cost) arising in the current year (1) (17)  
Net actuarial (loss) gain arising in the current year 75 (404)  
Other Comprehensive (Income) Loss, Defined Benefit Plan, Impact of Divestitures, Reclassification Adjustment from AOCI, before Tax 0 64  
Foreign currency translation gain (loss) (42) 33  
Ending balance in AOCI (2,493) (2,932) $ (2,907)
Prior service credit (cost) (10) (14)  
Net actuarial loss (2,483) $ (2,918)  
Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract]      
Amounts in AOCI expected to be recognized as component of net periodic pension cost in next fiscal year 144    
Amortization of prior service cost (credit) (3)    
Amortization of actuarial loss $ 147    
Weighted average assumptions used in computing the benefit obligations      
Discount rate (as a percent) 3.50% 4.00%  
Rate of increase in compensation levels (as a percent) 3.50% 3.75%  
Weighted-average assumptions used in computing net periodic benefit cost      
Discount rate (as a percent) 4.00% 4.25% 3.75%
Rate of increase in compensation levels (as a percent) 3.75% 3.50% 3.50%
Expected long-term rate of return on plan assets (as a percent) 8.00% 8.25% 8.25%
Pension benefits | Impact of settlements [Member]      
Changes in AOCI for our benefit plans, pretax      
Recognized net actuarial loss (gain) $ 228 $ 118  
Other benefits      
Net periodic pension and other Postretirement benefit cost      
Service cost 17 22 $ 27
Interest cost 29 31 37
Expected return on plan assets (12) (11) (11)
Amortization of prior service cost (credit) (18) (19) (19)
Amortization of actuarial loss 8 7 10
Net periodic benefit cost 24 30 44
Settlement charge 0 0 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment (79) 0 0
Special termination benefits 0 1 2
Defined Benefit Plan, Other Cost (Credit) 0 23 0
Total cost recognized in the statement of income (55) 54 46
Changes in AOCI for our benefit plans, pretax      
Beginning balance in AOCI (48) (26)  
Recognized prior service cost (credit) (54) (28)  
Recognized net actuarial loss (gain) (36) 7  
Prior service credit (cost) arising in the current year 21 4  
Net actuarial (loss) gain arising in the current year 92 (6)  
Other Comprehensive (Income) Loss, Defined Benefit Plan, Impact of Divestitures, Reclassification Adjustment from AOCI, before Tax 0 0  
Foreign currency translation gain (loss) (1) 1  
Ending balance in AOCI (26) (48) $ (26)
Prior service credit (cost) 36 69  
Net actuarial loss (62) $ (117)  
Defined Benefit Plan, Expected Amortization, Next Fiscal Year [Abstract]      
Amounts in AOCI expected to be recognized as component of net periodic pension cost in next fiscal year (10)    
Amortization of prior service cost (credit) (14)    
Amortization of actuarial loss $ 4    
Weighted average assumptions used in computing the benefit obligations      
Discount rate (as a percent) 3.50% 4.00%  
Weighted-average assumptions used in computing net periodic benefit cost      
Discount rate (as a percent) 4.00% 4.25% 3.75%
Expected long-term rate of return on plan assets (as a percent) 4.75% 4.75% 4.75%
Other benefits | Impact of curtailments [Member]      
Changes in AOCI for our benefit plans, pretax      
Recognized prior service cost (credit) $ 36 $ 9  
Recognized net actuarial loss (gain) (43)    
Net actuarial (loss) gain arising in the current year $ 45 $ 17  
United States      
Weighted-average assumptions used in computing net periodic benefit cost      
Expected long-term rate of return on plan assets (as a percent) 8.00%    
The 5-year annualized return on plan assets (as a percent) 8.80%    
The 10-year annualized return on plan assets (as a percent) 5.40%    
The 15-year annualized return on plan assets (as a percent) 8.50%    
Annualized return on plan assets since inception (as a percent) 10.70%