Special Charges And Restructuring Activities (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012
Restructuring and Related Activities [Abstract]
Principal terms of new business, headcount reduced		10,000
Restructuring Reserve [Roll Forward]
Remaining accrual, beginning		$ 65,000,000
Special Charges		329,000,000
Non-cash charges		(24,000,000)
Adjustments		(58,000,000)
Payments		(76,000,000)
Remaining accrual, ending	236,000,000	236,000,000
Aircraft Charges [Member]
Restructuring Reserve [Roll Forward]
Remaining accrual, beginning		49,000,000
Special Charges		11,000,000
Non-cash charges		(11,000,000)
Adjustments		(47,000,000)
Payments		(2,000,000)
Remaining accrual, ending	0	0
Facility Exit Costs [Member]
Restructuring Reserve [Roll Forward]
Remaining accrual, beginning		16,000,000
Special Charges		13,000,000
Non-cash charges		(13,000,000)
Adjustments		(11,000,000)
Payments		(1,000,000)
Remaining accrual, ending	4,000,000	4,000,000
Employee Charges [Member]
Restructuring Reserve [Roll Forward]
Remaining accrual, beginning		0
Special Charges	211,000,000	305,000,000
Non-cash charges		0
Adjustments		0
Payments		73,000,000
Remaining accrual, ending	$ 232,000,000	$ 232,000,000