XML 118 R97.htm IDEA: XBRL DOCUMENT v3.8.0.1
Pension and Postretirement Benefit Plans - Change in Benefit Obligation and Plan Assets and Amounts Recognized in Balance Sheet and AOCI (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Amounts recognized in the Consolidated Balance Sheet      
Non-current assets $ 237 $ 52  
Accrued benefit cost      
Current liabilities (69) (66)  
Non-current liabilities (3,620) (4,018)  
Funded | Qualified and Non-qualified Pension Benefits      
Change in plan assets      
Company contributions 964 380  
Funded | Postretirement Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 2,259 2,216  
Service cost 52 54 $ 75
Interest cost 80 79 98
Foreign exchange rate changes 3 7  
Plan amendments (6)    
Actuarial (gain) loss 127 7  
Benefit payments (105) (104)  
Benefit obligation at end of year 2,410 2,259 2,216
Change in plan assets      
Fair value, beginning balance 1,356 1,367  
Actual return on plan assets 143 90  
Company contributions 3 3  
Benefit payments (105) (104)  
Fair value, ending balance 1,397 1,356 1,367
Funded status at end of year (1,013) (903)  
Accrued benefit cost      
Current liabilities (4) (4)  
Non-current liabilities (1,009) (899)  
Ending balance (1,013) (903)  
Amounts recognized in accumulated other comprehensive income      
Net actuarial loss (gain) 774 761  
Prior service cost (credit) (163) (214)  
Ending balance 611 547  
Funded | United States | Qualified and Non-qualified Pension Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 16,202 15,856  
Service cost 268 259 293
Interest cost 565 575 655
Plan amendments   5  
Actuarial (gain) loss 1,263 427  
Benefit payments (936) (919)  
Settlements, curtailments, special termination benefits and other (2) (1)  
Benefit obligation at end of year 17,360 16,202 15,856
Change in plan assets      
Fair value, beginning balance 14,081 13,966  
Actual return on plan assets 1,693 779  
Company contributions 852 259  
Benefit payments (936) (919)  
Settlements, curtailments, special termination benefits and other (4) (4)  
Fair value, ending balance 15,686 14,081 13,966
Funded status at end of year (1,674) (2,121)  
Amounts recognized in the Consolidated Balance Sheet      
Non-current assets 4 4  
Accrued benefit cost      
Current liabilities (53) (52)  
Non-current liabilities (1,625) (2,073)  
Ending balance (1,674) (2,121)  
Amounts recognized in accumulated other comprehensive income      
Net actuarial loss (gain) 5,921 5,704  
Prior service cost (credit) (175) (198)  
Ending balance 5,746 5,506  
Accumulated benefit obligations in excess of plan assets      
Projected benefit obligation 17,350 16,202  
Accumulated benefit obligation 16,260 15,149  
Fair value of plan assets 15,671 14,081  
Total Accumulated Benefit Obligation 16,270 15,149  
Funded | International | Qualified and Non-qualified Pension Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 6,625 6,322  
Acquisitions/Transfers 3 (5)  
Service cost 142 133 154
Interest cost 157 171 206
Participant contributions 8 8  
Foreign exchange rate changes 667 (472)  
Plan amendments 6 (4)  
Actuarial (gain) loss 170 724  
Benefit payments (276) (245)  
Settlements, curtailments, special termination benefits and other   (7)  
Benefit obligation at end of year 7,502 6,625 6,322
Change in plan assets      
Fair value, beginning balance 5,617 5,669  
Acquisitions 2    
Actual return on plan assets 714 512  
Company contributions 112 121  
Participant contributions 8 8  
Foreign exchange rate changes 560 (444)  
Benefit payments (276) (245)  
Settlements, curtailments, special termination benefits and other   (4)  
Fair value, ending balance 6,737 5,617 $ 5,669
Funded status at end of year (765) (1,008)  
Amounts recognized in the Consolidated Balance Sheet      
Non-current assets 233 48  
Accrued benefit cost      
Current liabilities (12) (10)  
Non-current liabilities (986) (1,046)  
Ending balance (765) (1,008)  
Amounts recognized in accumulated other comprehensive income      
Net actuarial loss (gain) 1,720 1,933  
Prior service cost (credit) (40) (56)  
Ending balance 1,680 1,877  
Accumulated benefit obligations in excess of plan assets      
Projected benefit obligation 2,687 2,590  
Accumulated benefit obligation 2,449 2,351  
Fair value of plan assets 1,731 1,635  
Total Accumulated Benefit Obligation $ 6,870 $ 6,058