Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS - HEALTH CARE TREND RATES, EFFECTS OF ONE PERCENT CHANGE IN HEALTH CARE COST RATES AND EXPECTED BENEFIT PAYMENTS (Details)

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EMPLOYEE BENEFIT PLANS - HEALTH CARE TREND RATES, EFFECTS OF ONE PERCENT CHANGE IN HEALTH CARE COST RATES AND EXPECTED BENEFIT PAYMENTS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Expected benefit payments:    
Net transfer out of Level 3 assets due to a change in the significance of unobservable inputs for several investments $ 0  
U.S. Defined Benefit Plans    
Projected benefit obligation in excess of plan assets    
Projected benefit obligation 1,058 $ 961
Fair value of plan assets 728 722
Accumulated benefit obligation in excess of plan assets    
Projected benefit obligation 1,058 961
Accumulated benefit obligation 1,031 941
Fair value of plan assets 728 722
2017 expected employer contributions:    
To plan trusts 54  
Expected benefit payments:    
2017 66  
2018 90  
2019 66  
2020 65  
2021 67  
2022-2026 369  
Non-U.S. Defined Benefit Plans    
Projected benefit obligation in excess of plan assets    
Projected benefit obligation 3,074 2,129
Fair value of plan assets 2,389 1,514
Accumulated benefit obligation in excess of plan assets    
Projected benefit obligation 2,145 1,403
Accumulated benefit obligation 2,020 1,312
Fair value of plan assets 1,487 $ 823
2017 expected employer contributions:    
To plan trusts 54  
Expected benefit payments:    
2017 97  
2018 102  
2019 102  
2020 107  
2021 111  
2022-2026 $ 588  
Other Postretirement Benefit Plans    
Health care trend rate    
Health care trend rate (as a percent) 7.00% 7.00%
Ultimate health care trend rate (as a percent) 5.00% 5.00%
Effects of one-percent-point change in assumed health care cost trend rates    
Effect on postretirement benefit obligation, Increase $ 1  
Effect on postretirement benefit obligation, Decrease (1)  
U.S. Other Postretirement Benefit Plans    
2017 expected employer contributions:    
To plan trusts 8  
Expected benefit payments:    
2017 8  
2018 8  
2019 8  
2020 8  
2021 8  
2022-2026 37  
Non-U.S. Other Postretirement Benefit Plans    
Expected benefit payments:    
2022-2026 $ 1