Long-Term Employee Benefits (Contributions) (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended		1 Months Ended
Dec. 31, 2010 U.S. Pension Plan Trust Fund [Member]	Dec. 31, 2009 U.S. Pension Plan Trust Fund [Member]	Dec. 31, 2011 Pension Plan Other Than Principal Plan [Member]	Dec. 31, 2011 Other Long-Term Employee Benefit Plans [Member]	Jan. 31, 2012 Contribution to Pension Plan [Member] U.S. Pension Plan Trust Fund [Member]
Expected contribution in next fiscal year			$ 345	$ 315
Employer contributions		0
Voluntary contribution to principal U.S. pension plan	$ 500				$ 500

The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph g

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant