Restructuring Related Activities 2010 (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended	36 Months Ended	12 Months Ended	23 Months Ended	12 Months Ended			36 Months Ended	12 Months Ended		23 Months Ended	12 Months Ended								36 Months Ended	12 Months Ended		23 Months Ended	12 Months Ended								36 Months Ended	12 Months Ended		23 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2011 2010 Restructuring Plan [Member]	Dec. 31, 2011 2010 Restructuring Plan [Member]	Dec. 31, 2011 Termination Benefits [Member]	Dec. 31, 2010 Termination Benefits [Member]	Dec. 31, 2009 Termination Benefits [Member]	Dec. 31, 2011 Termination Benefits [Member]	Dec. 31, 2011 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2010 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Accelerated depreciation [Member]	Dec. 31, 2010 Accelerated depreciation [Member]	Dec. 31, 2009 Accelerated depreciation [Member]	Dec. 31, 2011 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2010 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Transfer costs [Member]	Dec. 31, 2010 Transfer costs [Member]	Dec. 31, 2009 Transfer costs [Member]	Dec. 31, 2011 Transfer costs [Member]	Dec. 31, 2011 Transfer costs [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2010 Transfer costs [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Transfer costs [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Fixed asset write-offs [Member]	Dec. 31, 2010 Fixed asset write-offs [Member]	Dec. 31, 2009 Fixed asset write-offs [Member]	Dec. 31, 2011 Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2010 Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Other [Member]	Dec. 31, 2010 Other [Member]	Dec. 31, 2009 Other [Member]	Dec. 31, 2011 Other [Member]	Dec. 31, 2011 Other [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2010 Other [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Other [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] Restructuring Plan [Member] Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] Restructuring Plan [Member] Other [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Minimum [Member] Restructuring Related To Plan [Member] Other [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] Restructuring Plan [Member] Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] Restructuring Plan [Member] Other [Member] 2010 Restructuring Plan [Member]	Dec. 31, 2011 Maximum [Member] Restructuring Related To Plan [Member] Other [Member] 2010 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		$ 318		$ 159
Impact of restructuring costs on the accompanying financial statements
Restructuring plan estimated future cash outflow																																				150					160
Cash payments associated with restructuring initiatives	114	223	71	140	45			90	39		84						27			67									42			66	32		56
Restructuring and Related Cost, Incurred Cost					55	70	34		24	66		9	7	11	1		27	41	37						11	13		11	38	40	17		24	33
Expected total costs associated with the plan																																				$ 165	$ 95	$ 10	$ 50	$ 10	$ 185	$ 100	$ 15	$ 55	$ 15