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Long-Term Employee Benefits (Schedule of Fair Value of Plan Assets Held in Level 3) (Details) (Level 3 Inputs [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | $ 4,510 | $ 4,500
Realized gain (loss) | 42 | 14
Change in unrealized gain (loss) | 192 | 253
Purchases, sales and settlements, net | (278) | (134)
Transfers (out) in of Level 3 | 4 | (123)
Ending balance | 4,470 | 4,510
U.S. Equity Securities [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 18 | 28
Realized gain (loss) | 0 | (3)
Change in unrealized gain (loss) | 5 | (8)
Purchases, sales and settlements, net | 6 | (1)
Transfers (out) in of Level 3 | (2) | 2
Ending balance | 27 | 18
Non-U.S. Equity Securities [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 0 | 0
Realized gain (loss) | 0 | 0
Change in unrealized gain (loss) | 1 | 0
Purchases, sales and settlements, net | 1 | 0
Transfers (out) in of Level 3 | 1 | 0
Ending balance | 3 | 0
Debt - corporate issued [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 27 | 30
Realized gain (loss) | 0 | 0
Change in unrealized gain (loss) | (8) | (10)
Purchases, sales and settlements, net | (1) | 7
Transfers (out) in of Level 3 | 1 | 0
Ending balance | 19 | 27
Debt - Asset-backed [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 2 | 4
Realized gain (loss) | 0 | 0
Change in unrealized gain (loss) | 0 | 0
Purchases, sales and settlements, net | 0 | (2)
Transfers (out) in of Level 3 | 2 | 0
Ending balance | 4 | 2
Hedge funds [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 387 | 392
Realized gain (loss) | 3 | (6)
Change in unrealized gain (loss) | 22 | 17
Purchases, sales and settlements, net | 22 | (16)
Transfers (out) in of Level 3 | 0 | 0
Ending balance | 434 | 387
Private market securities [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 2,922 | 2,959
Realized gain (loss) | 39 | 23
Change in unrealized gain (loss) | 95 | 179
Purchases, sales and settlements, net | (181) | (114)
Transfers (out) in of Level 3 | 2 | (125)
Ending balance | 2,877 | 2,922
Real Estate [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 1,154 | 1,087
Realized gain (loss) | 0 | 0
Change in unrealized gain (loss) | 77 | 75
Purchases, sales and settlements, net | (125) | (8)
Transfers (out) in of Level 3 | 0 | 0
Ending balance | $ 1,106 | $ 1,154

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- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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