Benefit Obligations (Schedule of Weighted-average Target Asset Allocations) (Details)	12 Months Ended
Dec. 31, 2011
United States Pension Plans of US Entity, Defined Benefit [Member]
Bonds - domestic to plans	53.00%
Equities - domestic to plans	26.00%
Equities - international to plans	20.00%
Other	1.00%
Total	100.00%
Foreign Pension Plans, Defined Benefit [Member]
Bonds - domestic to plans	75.00%
Equities - domestic to plans	16.00%
Equities - international to plans	5.00%
Other	4.00%
Total	100.00%

Defined Benefit Plan Target Allocation Percentage of Assets International to Plans Equity Securities.

No definition available.

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- Definition

Defined Benefit Plan Target Allocation Percentage of Assets, Total.

+ References

No definition available.

+ Details

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- Definition

Target allocation percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e2446-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

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

+ Details

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- Definition

Target allocation percentage of investments in equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

+ References

No definition available.

+ Details

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- Definition

Target allocation percentage in other than debt securities, equity securities, and real estate to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

+ References

No definition available.

+ Details

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