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Retirement Plans and Other Retiree Benefits (Details 6) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
2012 Restructuring Program      
Defined Benefit Plan Disclosure [Line Items]      
Charges against assets $ 33 $ 42 $ 31
Other | 2012 Restructuring Program      
Defined Benefit Plan Disclosure [Line Items]      
Charges against assets 0 0 0
Employee Related Costs | 2012 Restructuring Program      
Defined Benefit Plan Disclosure [Line Items]      
Charges against assets 4 17 5
United States Pension Plan of US Entity      
Defined Benefit Plan Disclosure [Line Items]      
Voluntary contributions to postretirement plans 53 0 2
Components of Net Periodic Benefit Cost      
Service cost 1 2 1
Interest cost 105 100 102
Annual ESOP allocation 0 0 0
Expected return on plan assets (109) (117) (112)
Amortization of transition and prior service costs (credits) 0 0 1
Amortization of actuarial loss 41 44 37
Net periodic benefit cost 38 29 29
Other postretirement charges 3 16 5
Total pension cost $ 41 $ 45 $ 34
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost      
Discount rate 4.93% 4.24% 4.96%
Long-term rate of return on plan assets 6.80% 6.80% 6.80%
Long-term rate of compensation increase 3.50% 3.50% 3.50%
ESOP growth rate 0.00% 0.00% 0.00%
Medical cost trend rate of increase 0.00% 0.00% 0.00%
International Pension Benefits      
Components of Net Periodic Benefit Cost      
Service cost $ 16 $ 20 $ 17
Interest cost 25 28 35
Annual ESOP allocation 0 0 0
Expected return on plan assets (23) (28) (29)
Amortization of transition and prior service costs (credits) 0 2 4
Amortization of actuarial loss 8 11 6
Net periodic benefit cost 26 33 33
Other postretirement charges 11 (1) (8)
Total pension cost $ 37 $ 32 $ 25
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost      
Discount rate 3.17% 3.06% 3.99%
Long-term rate of return on plan assets 4.62% 5.05% 5.50%
Long-term rate of compensation increase 2.78% 2.83% 3.02%
ESOP growth rate 0.00% 0.00% 0.00%
Medical cost trend rate of increase 0.00% 0.00% 0.00%
Other Postretirement Benefit Plan      
Components of Net Periodic Benefit Cost      
Service cost $ 13 $ 14 $ 11
Interest cost 43 44 42
Annual ESOP allocation 0 0 (1)
Expected return on plan assets (1) (2) (3)
Amortization of transition and prior service costs (credits) 0 0 3
Amortization of actuarial loss 14 25 16
Net periodic benefit cost 69 81 68
Other postretirement charges 1 1 0
Total pension cost $ 70 $ 82 $ 68
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost      
Discount rate 4.97% 4.36% 5.24%
Long-term rate of return on plan assets 6.80% 6.80% 6.80%
Long-term rate of compensation increase 0.00% 0.00% 0.00%
ESOP growth rate 10.00% 10.00% 10.00%
Medical cost trend rate of increase 6.67% 7.00% 7.00%