Restructuring Related Activities 2007 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	38 Months Ended	3 Months Ended	53 Months Ended
Mar. 31, 2012	Mar. 31, 2012	Mar. 31, 2012 2007 Restructuring Plan [Member]	Mar. 31, 2012 2007 Restructuring Plan [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		$ 335
Cash payments associated with restructuring initiatives	$ 36	$ 259	$ 3	$ 377

The amount of cash paid during the reporting period for charges associated with the consolidation and relocation of operations, disposition or abandonment of operations or productive assets (that is, for reorganizing and restructuring charges and other related expenses). These charges may be incurred in connection with a business combination, change in strategic plan, a managerial response to declines in demand, increasing costs or other environmental factors.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Name:	us-gaap_PaymentsForRestructuring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration