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Reorganization Charges (Components Of Company's Special Charges) (Details) (USD $)
In Millions
9 Months Ended
Sep. 30, 2011
Remaining accrual at December 31, 2010$ 86
Capacity reduction charges 
Non-cash charges 
Adjustments27
Payments(38)
Remaining accrual at September 30, 201175
Aircraft Charges [Member]
 
Remaining accrual at December 31, 201059
Capacity reduction charges 
Non-cash charges 
Adjustments26
Payments(35)
Remaining accrual at September 30, 201150
Facility Exit Costs [Member]
 
Remaining accrual at December 31, 201027
Capacity reduction charges 
Non-cash charges 
Adjustments1
Payments(3)
Remaining accrual at September 30, 2011$ 25