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Discontinued Operations And Dispositions (International Leveraged Lease To Disallow Certain Tax Deductions) (Details) (Leveraged Leases [Member], Energy Holdings [Member], USD $)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2010
Jun. 30, 2010
Leveraged Leases [Member] | Energy Holdings [Member]
   
Proceeds from Sales $ 55 $ 161
Gain on Sales, after-tax $ 4 $ 12