Restructuring Related Activities 2010 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		41 Months Ended	3 Months Ended		6 Months Ended		29 Months Ended	3 Months Ended		6 Months Ended		41 Months Ended	3 Months Ended		6 Months Ended		29 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		41 Months Ended	3 Months Ended		6 Months Ended		29 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		41 Months Ended	3 Months Ended		6 Months Ended		29 Months Ended	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2012 2010 Restructuring Plan [Member]	Jun. 30, 2011 2010 Restructuring Plan [Member]	Jun. 30, 2012 2010 Restructuring Plan [Member]	Jun. 30, 2011 2010 Restructuring Plan [Member]	Jun. 30, 2012 2010 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2011 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2011 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Accelerated depreciation [Member]	Jun. 30, 2011 Accelerated depreciation [Member]	Jun. 30, 2012 Accelerated depreciation [Member]	Jun. 30, 2011 Accelerated depreciation [Member]	Jun. 30, 2012 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2011 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2011 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Fixed asset write-offs [Member]	Jun. 30, 2011 Fixed asset write-offs [Member]	Jun. 30, 2012 Fixed asset write-offs [Member]	Jun. 30, 2011 Fixed asset write-offs [Member]	Jun. 30, 2012 Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2011 Other [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2011 Other [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2012 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2011 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] Restructuring Plan [Member] Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] Restructuring Plan [Member] Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Minimum [Member] Restructuring Related To Plan [Member] Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] Restructuring Plan [Member] Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] Restructuring Plan [Member] Fixed asset write-offs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Maximum [Member] Restructuring Plan [Member] Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 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					$ 366					$ 159
Impact of restructuring costs on the accompanying financial statements
Restructuring plan estimated future cash outflow																																																									150					160
Cash payments associated with restructuring initiatives	30		65		291	1		3		143	15		36		129	1		3		87									2		6		71														13		23		91					56
Restructuring and Related Cost, Incurred Cost	33	30	50	80		1	13	1	51		22	8	20	36			2	(2)	29			3		6					2	8	6	16															9	11	24	22		1	11	3	22
Expected total costs associated with the plan																																																									$ 165	$ 95	$ 10	$ 50	$ 10	$ 185	$ 100	$ 15	$ 55	$ 15