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		328,000,000
Non-cash charges		(24,000,000)
Adjustments		(58,000,000)
Payments		74,000,000
Remaining accrual, ending	237,000,000	237,000,000
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	304,000,000
Non-cash charges		0
Adjustments		0
Payments		71,000,000
Remaining accrual, ending	$ 233,000,000	$ 233,000,000