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Financial Instruments Derivatives Not Designated as Hedging, Fair Value Table (Details) (USD $) In Millions, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
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Not Designated as Hedging Instrument [Member] | Other Assets [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Asset Derivatives, Gross | $ 7 | [1] | $ 6 | [1]
Asset Derivatives, Netting across contract types | 0 | [1],[2] | 0 | [1],[2]
Asset Derivatives, Total | 7 | [1],[2] | 6 | [1],[2]
Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Liability Derivatives, Gross | 100 | [3] | 42 | [3]
Liability Derivatives, Netting across contract types | 0 | [2],[3] | 0 | [2],[3]
Liability Derivatives, Total | 100 | [2],[3] | 42 | [2],[3]
Not Designated as Hedging Instrument [Member] | Equity Contract [Member] | Other Assets [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Asset Derivatives, Gross | 0 | [1] | 3 | [1]
Not Designated as Hedging Instrument [Member] | Equity Contract [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Liability Derivatives, Gross | 82 | [3] | 42 | [3]
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Assets [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Asset Derivatives, Gross | 0 | [1] | 3 | [1]
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Liability Derivatives, Gross | 10 | [3] | 0 | [3]
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Other Assets [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Derivative Asset, Fair Value, Net | 7 | [1] | 0 | [1]
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Derivative Liability, Fair Value, Net | 8 | [3] | 0 | [3]
Investment Funds [Member] |  |  |  |
Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items] |  |  |  |
Cash collateral posted for derivative positions | $ 530 |  | $ 257 |
[1] | Net asset derivatives are located within other assets in our consolidated balance sheets.
[2] | Excludes netting of cash collateral received and posted. The total collateral posted at June 30, 2012 and December 31, 2011 was $530 million and $257 million, respectively, across all counterparties.
[3] | Net liability derivatives are located within accrued expenses and other liabilities in our consolidated balance sheets.

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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44D -Subparagraph c -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 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624258-113959 + Details
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- Definition Fair value of the gross assets less the gross liabilities of a derivative asset or group of derivative assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 + Details
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