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Retirement Plans (Details 9) (Pension Plans, Defined Benefit [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Total target asset allocations | 100.00% | 100.00% |
Fair value of plan assets | $ 2,069 | $ 2,052 | $ 1,989
Equity securities [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Target allocation percentage of assets, equity securities | 15.00% | 15.00% |
Fair value of plan assets | 250 | 331 |
Equity securities [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Target allocation percentage of assets, equity securities | 30.00% | 30.00% |
Fair value of plan assets | 644 | 704 |
Fixed Income Funds [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Target allocation percentage of assets, debt securities | 30.00% | 30.00% |
Fair value of plan assets | 582 | 522 |
Fixed Income Funds [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Target allocation percentage of assets, debt securities | 15.00% | 15.00% |
Fair value of plan assets | 406 | 318 |
Balanced Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Target allocation percentage of assets, other | 5.00% | 5.00% |
Fair value of plan assets | 69 | 65 |
Cash and Cash Equivalents [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Target allocation percentage of assets, other | 0.00% | 0.00% |
Fair value of plan assets | 12 | 11 |
Other Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Target allocation percentage of assets, other | 5.00% | 5.00% |
Fair value of plan assets | 106 | 101 |
Level 1 [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 906 | 1,046 |
Level 1 [Member] | Equity securities [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 250 | 331 |
Level 1 [Member] | Equity securities [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 644 | 704 |
Level 1 [Member] | Fixed Income Funds [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 1 [Member] | Fixed Income Funds [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 1 [Member] | Balanced Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 1 [Member] | Cash and Cash Equivalents [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 12 | 11 |
Level 1 [Member] | Other Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 2 [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 1,057 | 905 |
Level 2 [Member] | Equity securities [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 2 [Member] | Equity securities [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 2 [Member] | Fixed Income Funds [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 582 | 522 |
Level 2 [Member] | Fixed Income Funds [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 406 | 318 |
Level 2 [Member] | Balanced Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 69 | 65 |
Level 2 [Member] | Cash and Cash Equivalents [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 2 [Member] | Other Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 106 | 101 |
Level 3 [Member] | Equity securities [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 [Member] | Equity securities [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 [Member] | Fixed Income Funds [Member] | U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 [Member] | Fixed Income Funds [Member] | Non-U.S. [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 [Member] | Balanced Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 [Member] | Cash and Cash Equivalents [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 [Member] | Other Funds [Member] |  |  |
Target allocation and categorization of all defined benefit pension plan assets measured at fair value on recurring basis |  |  |
Fair value of plan assets | $ 106 | $ 101 | $ 98

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) -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 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + 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 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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