Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Components of Periodic Benefit Cost (Income) (Details)

v2.4.0.6
Employee Benefit Plans - Components of Periodic Benefit Cost (Income) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Nonqualified and Other Pension Plans [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Service Cost $ 1 $ 3 $ 3
Interest Cost 138 152 163
Expected Return on Plan Assets (152) (141) (138)
Amortization of Transition Obligation 0 0 0
Amortization of Prior Service Cost (Credits) (3) (8) (8)
Amortization Of Net Actuarial Loss (Gain) 8 16 10
Recognized Gain (Loss) Due to Settlements and Curtailments 0 3 17
Net Periodic Benefit Cost (8) 25 47
Weighted-Average Assumptions, Discount Rate 4.65% 5.20% 5.75%
Weighted-Average Assumptions, Expected Return on Plan Assets 5.25% 5.25% 5.25%
Weighted-Average Assumptions, Rate of Compensation increase 4.00% 4.00% 4.00%
Postretirement Health and Life Plans [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Service Cost 13 15 14
Interest Cost 71 80 92
Expected Return on Plan Assets (8) (9) (9)
Amortization of Transition Obligation 32 31 31
Amortization of Prior Service Cost (Credits) 4 4 6
Amortization Of Net Actuarial Loss (Gain) (38) (17) (49)
Recognized Gain (Loss) Due to Settlements and Curtailments 0 0 0
Net Periodic Benefit Cost 74 104 85
Weighted-Average Assumptions, Discount Rate 4.65% 5.10% 5.75%
Weighted-Average Assumptions, Expected Return on Plan Assets 8.00% 8.00% 8.00%
Qualified Pension Plans [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Service Cost 236 423 397
Interest Cost 681 746 748
Expected Return on Plan Assets (1,246) (1,296) (1,263)
Amortization of Prior Service Cost (Credits) 9 20 28
Amortization Of Net Actuarial Loss (Gain) 469 387 362
Recognized Gain (Loss) Due to Settlements and Curtailments 58 0 0
Net Periodic Benefit Cost 207 280 272
Weighted-Average Assumptions, Discount Rate 4.95% 5.45% 5.75%
Weighted-Average Assumptions, Expected Return on Plan Assets 8.00% 8.00% 8.00%
Weighted-Average Assumptions, Rate of Compensation increase 4.00% 4.00% 4.00%
Non-U.S. Pension Plans [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Service Cost 40 43 32
Interest Cost 97 99 95
Expected Return on Plan Assets (137) (115) (97)
Amortization of Prior Service Cost (Credits) 0 0 0
Amortization Of Net Actuarial Loss (Gain) (9) 0 (1)
Recognized Gain (Loss) Due to Settlements and Curtailments 0 0 0
Net Periodic Benefit Cost $ (9) $ 27 $ 29
Weighted-Average Assumptions, Discount Rate 4.87% 5.32% 5.41%
Weighted-Average Assumptions, Expected Return on Plan Assets 6.65% 6.58% 6.60%
Weighted-Average Assumptions, Rate of Compensation increase 4.42% 4.85% 4.67%