v3.2.0.727
Stockholders' Equity Accumulated Other Comprehensive Income Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]        
Beginning balance     $ (8,073)  
Other comprehensive income (loss), net of tax $ (213) $ 3 538 $ (25)
Ending balance (7,543)   (7,543)  
Foreign Currency Translation Adjustments [Member]        
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]        
Beginning balance (881) (709) (1,064) (614)
Other Comprehensive Income (Loss), before Reclassifications Adjustment, Net of Tax (149) 46 (127) (52)
Reclassification Adjustment, Net of Tax 6 0 176 0
Other comprehensive income (loss), net of tax (143) 46 49 (52)
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interests, Net of Tax 1 2 (8) 5
Ending balance (1,023) (661) (1,023) (661)
Unrealized Gains and Losses on Securities, Net [Member]        
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]        
Beginning balance 2 5 (3) 2
Other Comprehensive Income (Loss), before Reclassifications Adjustment, Net of Tax (4) (1) 2 3
Reclassification Adjustment, Net of Tax (1) 1 (2) 0
Other comprehensive income (loss), net of tax (5) 0 0 3
Ending balance (3) 5 (3) 5
Defined Benefit Plans, Net [Member]        
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]        
Beginning balance (6,452) (2,434) (7,006) (2,501)
Other Comprehensive Income (Loss), Before Reclassification Adjustment - Prior Service Cost or Credit, Net of Tax (4) (19) (7) (24)
Other Comprehensive Income (Loss) Before Reclassification Adjustment - Actuarial Gains or Losses, Net of Tax (143) (50) 348 (22)
Other Comprehensive Income (Loss), before Reclassifications Adjustment, Net of Tax (147) (69) 341 (46)
Reclassification Adjustment - Prior Service Cost or Credit, net of Tax 7 (4) 7 11
Reclassification Adjustment - actuarial losses, net of tax 75 30 141 59
Reclassification Adjustment, Net of Tax 82 26 148 70
Other comprehensive income (loss), net of tax (65) (43) 489 24
Ending balance $ (6,517) $ (2,477) $ (6,517) $ (2,477)