Postretirement Benefit Plans (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2012 Plans	Sep. 30, 2011
Postretirement Benefit Plans (Textual) [Abstract]
Employer Contribution to definer benefit Plan	$ 27	$ 6
Purchase an annuity	2
Number of international pension plans	5
Minimum
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block
Additional contributions	10
Maximum
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block
Additional contributions	$ 15

The increase in the fair value of plan assets from contributions made by the employer.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 (b)(3)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration