Restructuring Related Activities 2010 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		53 Months Ended	3 Months Ended		6 Months Ended		41 Months Ended	3 Months Ended		6 Months Ended		53 Months Ended	3 Months Ended		6 Months Ended		41 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended		6 Months Ended		53 Months Ended	3 Months Ended	6 Months Ended	41 Months Ended	3 Months Ended		6 Months Ended		53 Months Ended	3 Months Ended		6 Months Ended		41 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2013 2010 Restructuring Plan [Member]	Jun. 30, 2012 2010 Restructuring Plan [Member]	Jun. 30, 2013 2010 Restructuring Plan [Member]	Jun. 30, 2012 2010 Restructuring Plan [Member]	Jun. 30, 2013 2010 Restructuring Plan [Member]	Jun. 30, 2013 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2013 Termination Benefits [Member]	Jun. 30, 2012 Termination Benefits [Member]	Jun. 30, 2013 Termination Benefits [Member]	Jun. 30, 2013 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Accelerated depreciation [Member]	Jun. 30, 2012 Accelerated depreciation [Member]	Jun. 30, 2013 Accelerated depreciation [Member]	Jun. 30, 2012 Accelerated depreciation [Member]	Jun. 30, 2013 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Accelerated depreciation [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2013 Transfer costs [Member]	Jun. 30, 2012 Transfer costs [Member]	Jun. 30, 2013 Transfer costs [Member]	Jun. 30, 2013 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Transfer costs [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Other [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2013 Other [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2013 Other [Member]	Jun. 30, 2013 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2012 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Impairment of an asset in value [Member]	Jun. 30, 2012 Impairment of an asset in value [Member]	Jun. 30, 2013 Impairment of an asset in value [Member]	Jun. 30, 2012 Impairment of an asset in value [Member]	Jun. 30, 2013 Impairment of an asset in value [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Impairment of an asset in value [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Restructuring Plan [Member] Termination Benefits [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Restructuring Plan [Member] Other [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 Restructuring Plan [Member] Impairment of an asset in value [Member] 2010 Restructuring Plan [Member]	Jun. 30, 2013 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					$ 521					$ 160
Impact of restructuring costs on the accompanying financial statements
Restructuring plan estimated future cash outflow						145
Cash payments associated with restructuring initiatives	24		71		446	0		0		145	11		34		216	0		0		90								0		0		73	0	0	0	13		37		157	0		0		55
Restructuring and Related Cost, Incurred Cost	31	33	46	50		0	1	0	1		13	22	21	20		0	0	0	(2)		1	0	1	0	0	0	0	0	2	0	6		0	0		17	9	40	24		0	1	0	3		0	0	(16)	0	0	0
Expected total costs associated with the plan						$ 160		$ 160																																												$ 90	$ 51	$ 11	$ 8