Restructuring and Other Items (Details 1) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 49
Restructuring Charges	0
Restructuring Reserve, Settled with Cash	(46)
Restructuring Reserve, Accrual Adjustment	(3)
Restructuring Reserve	0
Facilities and Fleet [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	77
Restructuring Charges	7
Restructuring Reserve, Settled with Cash	(11)
Restructuring Reserve, Accrual Adjustment	(5)
Restructuring Reserve	$ 68