Employee Benefit Plans - Actual and Target Allocations (Details)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
U.S. Pension Benefits [Member]
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract]
Actual Allocation of Plan Assets, Equity Securities	18.00%	38.00%
Actual Allocation of Plan Assets, Debt securities	80.00%	59.00%
Actual Allocation of Plan Assets, Real estate	2.00%	3.00%
Actual Allocation of Plan Assets, Other	0.00%	0.00%
Actual Allocation of Plan Assets, Total	100.00%	100.00%
Pension asset fixed income allocation	80.00%	60.00%
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target Asset Allocation, Equity securities, Minimum	16.00%
Target Asset Allocation, Equity securities, Maximum	20.00%
Target Asset Allocation, Debt securities, Minimum	77.00%
Target Asset Allocation, Debt securities, Maximum	83.00%
Target Asset Allocation, Real estate, Minimum	1.00%
Target Asset Allocation, Real estate, Maximum	3.00%
Target Asset Allocation, Other, Minimum	0.00%
Target Asset Allocation, Other, Maximum	1.00%
International Pension Benefits [Member]
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract]
Actual Allocation of Plan Assets, Equity Securities	24.00%	45.00%
Actual Allocation of Plan Assets, Debt securities	65.00%	44.00%
Actual Allocation of Plan Assets, Real estate	6.00%	5.00%
Actual Allocation of Plan Assets, Other	5.00%	6.00%
Actual Allocation of Plan Assets, Total	100.00%	100.00%
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target Asset Allocation, Equity securities, Minimum	24.00%
Target Asset Allocation, Equity securities, Maximum	31.00%
Target Asset Allocation, Debt securities, Minimum	61.00%
Target Asset Allocation, Debt securities, Maximum	68.00%
Target Asset Allocation, Real estate, Minimum	3.00%
Target Asset Allocation, Real estate, Maximum	5.00%
Target Asset Allocation, Other, Minimum	3.00%
Target Asset Allocation, Other, Maximum	6.00%

Pension Asset Fixed Income Allocation

No definition available.

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- Details

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- Definition

The percentage of the fair value of debt securities to the fair value of total plan assets held as of the measurement date.

+ 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(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

-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)(1)

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

+ Details

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- Definition

The percentage of the fair value of equity securities to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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- Definition

The percentage of the fair value of investments other than debt securities, equity securities, and real estate to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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- Definition

The percentage of the fair value of real estate to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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- Definition

Target allocation maximum 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

No definition available.

+ Details

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- Definition

Target allocation minimum 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 maximum 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 minimum 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 maximum 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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- Definition

Target allocation minimum 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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- Definition

Target allocation maximum percentage of investments in 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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- Definition

Target allocation minimum percentage of investments in 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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- Definition

The aggregate percentage of the fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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