Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Pension and Postretirement Plans (Details)

v3.3.1.900
Employee Benefit Plans - Pension and Postretirement Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Change in fair value of plan assets          
Fair value, January 1 $ 24,133        
Fair value, December 31 23,505 $ 24,133      
Qualified Pension Plan          
Change in fair value of plan assets          
Fair value, January 1 18,614 18,276      
Actual return on plan assets 199 1,261      
Company contributions 0 0      
Plan participant contributions 0 0      
Settlements and curtailments 0 0      
Benefits paid (851) (923)      
Fair value, December 31 17,962 18,614 $ 18,276    
Change in projected benefit obligation          
Projected benefit obligation, January 1 15,508 14,145      
Service cost 0 0 0    
Interest cost 621 665 623    
Plan participant contributions 0 0      
Plan amendments 0 0      
Settlements and curtailments 0 0      
Actuarial loss (gain) (817) 1,621      
Benefits paid (851) (923)      
Projected benefit obligation, December 31 14,461 15,508 14,145    
Amount recognized, December 31       $ 3,501 $ 3,106
Funded status, December 31          
Accumulated benefit obligation       14,461 15,508
Overfunded (unfunded) status of ABO       3,501 3,106
Provision for future salaries       0 0
Projected benefit obligation 15,508 14,145 14,145 $ 14,461 $ 15,508
Weighted-average assumptions, December 31          
Discount rate       4.51% 4.12%
Non-U.S. Pension Plans          
Change in fair value of plan assets          
Fair value, January 1 2,564 2,457      
Actual return on plan assets 342 256      
Company contributions 58 84      
Plan participant contributions 1 1      
Settlements and curtailments (7) (5)      
Benefits paid (78) (68)      
Foreign currency exchange rate changes (142) (161)      
Fair value, December 31 2,738 2,564 2,457    
Change in projected benefit obligation          
Projected benefit obligation, January 1 2,688 2,580      
Service cost 27 29 32    
Interest cost 93 109 98    
Plan participant contributions 1 1      
Plan amendments (1) 1      
Settlements and curtailments (7) (6)      
Actuarial loss (gain) (2) 208      
Benefits paid (78) (68)      
Foreign currency exchange rate changes (141) (166)      
Projected benefit obligation, December 31 2,580 2,688 2,580    
Amount recognized, December 31       $ 158 $ (124)
Funded status, December 31          
Accumulated benefit obligation       2,479 2,582
Overfunded (unfunded) status of ABO       259 (18)
Provision for future salaries       101 106
Projected benefit obligation 2,688 2,580 2,580 $ 2,580 $ 2,688
Weighted-average assumptions, December 31          
Discount rate       3.59% 3.56%
Rate of compensation increase       4.64% 4.70%
Nonqualified and Other Pension Plans          
Change in fair value of plan assets          
Fair value, January 1 2,927 2,720      
Actual return on plan assets 14 336      
Company contributions 97 97      
Plan participant contributions 0 0      
Settlements and curtailments 0 0      
Benefits paid (233) (226)      
Fair value, December 31 2,805 2,927 2,720    
Change in projected benefit obligation          
Projected benefit obligation, January 1 3,329 3,070      
Service cost 0 1 1    
Interest cost 122 133 120    
Plan participant contributions 0 0      
Plan amendments 0 0      
Settlements and curtailments 0 0      
Actuarial loss (gain) (165) 351      
Benefits paid (233) (226)      
Projected benefit obligation, December 31 3,053 3,329 3,070    
Amount recognized, December 31       $ (248) $ (402)
Funded status, December 31          
Accumulated benefit obligation       3,052 3,329
Overfunded (unfunded) status of ABO       (247) (402)
Provision for future salaries       1 0
Projected benefit obligation 3,329 3,070 3,070 $ 3,053 $ 3,329
Weighted-average assumptions, December 31          
Discount rate       4.34% 3.80%
Rate of compensation increase       4.00% 4.00%
Postretirement Health and Life Plans          
Change in fair value of plan assets          
Fair value, January 1 28 72      
Actual return on plan assets 0 6      
Company contributions 79 53      
Plan participant contributions 127 129      
Settlements and curtailments 0 0      
Benefits paid (247) (248)      
Federal subsidy on benefits paid 13 16      
Fair value, December 31 0 28 72    
Change in projected benefit obligation          
Projected benefit obligation, January 1 1,346 1,356      
Service cost 8 8 9    
Interest cost 48 58 54    
Plan participant contributions 127 129      
Plan amendments 0 0      
Settlements and curtailments 0 0      
Actuarial loss (gain) (141) 29      
Benefits paid (247) (248)      
Federal subsidy on benefits paid 13 16      
Foreign currency exchange rate changes (2) (2)      
Projected benefit obligation, December 31 1,152 1,346 1,356    
Amount recognized, December 31       $ (1,152) $ (1,318)
Funded status, December 31          
Projected benefit obligation $ 1,346 $ 1,356 $ 1,356 $ 1,152 $ 1,346
Weighted-average assumptions, December 31          
Discount rate       4.32% 3.75%