Restructuring and Other Items (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 46	$ 20	$ 69
Restructuring Charges	126	100	15
Restructuring Reserve, Accrual Adjustment	0	0	0
Restructuring Reserve, Settled with Cash	(123)	(74)	(64)
Restructuring Reserve	49	46	20
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	64	85	74
Restructuring Charges	45	0	20
Restructuring Reserve, Accrual Adjustment	0	0	14
Restructuring Reserve, Settled with Cash	(32)	(21)	(23)
Restructuring Reserve	$ 77	$ 64	$ 85