Restructuring Related Activities 2011 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	41 Months Ended	3 Months Ended	6 Months Ended	11 Months Ended	3 Months Ended	6 Months Ended	41 Months Ended	3 Months Ended	6 Months Ended	11 Months Ended	3 Months Ended	6 Months Ended	41 Months Ended	3 Months Ended	6 Months Ended	11 Months Ended	3 Months Ended	6 Months Ended	41 Months Ended	3 Months Ended	6 Months Ended	11 Months Ended	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2012 2011 Restructuring Plan [Member]	Jun. 30, 2012 2011 Restructuring Plan [Member]	Jun. 30, 2012 2011 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Transfer costs [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Transfer costs [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2012 Other [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] Restructuring Plan [Member] Other [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] Restructuring Related To Plan [Member] Other [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] Restructuring Plan [Member] Other [Member] 2011 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] Restructuring Related To Plan [Member] Other [Member] 2011 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan																									$ 155	$ 125	$ 20	$ 10	$ 210	$ 150	$ 40	$ 20
Restructuring and Related Cost, Cost Incurred to Date			366			78
Restructuring plan estimated future cash outflow																									150				200
Payments for Restructuring	$ 30	$ 65	$ 291	$ 21	$ 39	$ 54	$ 15	$ 36	$ 129	$ 8	$ 16	$ 19	$ 2	$ 6	$ 71				$ 13	$ 23	$ 91	$ 13	$ 23	$ 35