Annual report pursuant to Section 13 and 15(d)

Recorded Value of Property, Plant and Equipment Subject To Capital Leases (Detail)

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Recorded Value of Property, Plant and Equipment Subject To Capital Leases (Detail) (Assets Held under Capital Leases, USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Assets Held under Capital Leases
   
Schedule of Capital Lease Obligations [Line Items]    
Vehicles $ 35  
Aircraft 2,282 2,466
Buildings 24  
Plant equipment 2  
Technology Equipment 1  
Accumulated amortization (457) (628)
Capital Leases, Balance Sheet, Assets by Major Class, Net, Total $ 1,887 $ 1,838