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Long-Term Borrowings (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
May. 31, 2015 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Jun. 30, 2015 | May. 12, 2015
Debt Instrument [Line Items] |  |  |  |  |  |  |
Dividend received from Chemours | $ 3,923 |  |  |  |  |  |
Cash distribution received from Chemours | $ 3,416 |  |  |  |  |  |
Separation related transaction costs |  | $ 68 | $ 61 | $ 289 | $ 112 |  |
Senior notes due 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Senior notes |  |  |  |  |  | $ 488 |
1.95% notes due 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Senior notes |  |  |  |  |  | $ 152 |
Debt instrument, interest rate, stated percentage |  |  |  |  |  | 1.95% |
2.75% notes due 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Senior notes |  |  |  |  |  | $ 277 |
Debt instrument, interest rate, stated percentage |  |  |  |  |  | 2.75% |
5.25% notes due 2016 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Senior notes |  |  |  |  |  | $ 59 |
Debt instrument, interest rate, stated percentage |  |  |  |  |  | 5.25% |
Chemours Notes Received [Member] | 7% notes due 2025 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  | $ 507
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  | 7.00%
Loss on extinguishment of debt [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Separation related transaction costs |  |  |  | $ 20 |  |  |

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- Definition Dividend received from Chemours in connection with the completion of the spin-off. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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