Restructuring Related Activities 2011 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	38 Months Ended	3 Months Ended	8 Months Ended	3 Months Ended	38 Months Ended	3 Months Ended	8 Months Ended	3 Months Ended	38 Months Ended	3 Months Ended	8 Months Ended	3 Months Ended	38 Months Ended	3 Months Ended	8 Months Ended	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2012	Mar. 31, 2012 2011 Restructuring Plan [Member]	Mar. 31, 2012 2011 Restructuring Plan [Member]	Mar. 31, 2012 Termination Benefits [Member]	Mar. 31, 2012 Termination Benefits [Member]	Mar. 31, 2012 Termination Benefits [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Termination Benefits [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Transfer costs [Member]	Mar. 31, 2012 Transfer costs [Member]	Mar. 31, 2012 Transfer costs [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Transfer costs [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Other [Member]	Mar. 31, 2012 Other [Member]	Mar. 31, 2012 Other [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Other [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Minimum [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Minimum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Minimum [Member] Restructuring Plan [Member] Other [Member] 2011 Restructuring Plan [Member]		Mar. 31, 2012 Minimum [Member] Restructuring Related To Plan [Member] Other [Member] 2011 Restructuring Plan [Member]		Mar. 31, 2012 Maximum [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Maximum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2011 Restructuring Plan [Member]	Mar. 31, 2012 Maximum [Member] Restructuring Plan [Member] Other [Member] 2011 Restructuring Plan [Member]		Mar. 31, 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	[1]	$ 10	[2]	$ 210	$ 150	$ 40	[1]	$ 20	[2]
Restructuring and Related Cost, Cost Incurred to Date		335		50
Restructuring plan estimated future cash outflow																	150						200
Payments for Restructuring	$ 36	$ 259	$ 19	$ 32	$ 22	$ 112	$ 9	$ 12	$ 4	$ 71			$ 10	$ 76	$ 10	$ 20

[1] Includes primarily consulting fees and costs associated with contractual cancellations.

[2] Comprised of other costs directly related to the 2011 Restructuring plan, including program management, accelerated depreciation, retention and infrastructure-related costs.