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Variable Interest Entities Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Sep. 30, 2013 | Aug. 09, 2013 | Jan. 17, 2012
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VIE Financing |  |  |  |
Membership interests of VIE subject to mandatory redemption | $ 40 | $ 40 | $ 40 |
Total liabilities of VIE | 1,409 | 1,393 |  | 1,000
SCCG |  |  |  |
VIE Financing |  |  |  |
Face amount |  |  | 360 |
JSCCG |  |  |  |
VIE Financing |  |  |  |
Face amount |  |  |  | 900
Holdco |  |  |  |
VIE Financing |  |  |  |
Face amount |  |  |  | 100
Accrued interest of VIE |  |  |  |
VIE Financing |  |  |  |
Total liabilities of VIE | 28 | 12 |  |
Current portion of membership interests of VIE subject to mandatory redemption |  |  |  |
VIE Financing |  |  |  |
Total liabilities of VIE | 2 | 2 |  |
Current maturities of long-term debt of VIE |  |  |  |
VIE Financing |  |  |  |
Total liabilities of VIE | 30 | 30 |  |
Total current liabilities of VIE |  |  |  |
VIE Financing |  |  |  |
Total liabilities of VIE | 60 | 44 |  |
Membership interests of VIE subject to mandatory redemption |  |  |  |
VIE Financing |  |  |  |
Total liabilities of VIE | 38 | 38 |  |
Long-term debt of VIE |  |  |  |
VIE Financing |  |  |  |
Total liabilities of VIE | $ 1,311 | $ 1,311 |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
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- Definition The amount that would be paid, determined under the conditions specified in the contract, if as of the reporting date, the holder of the share has the right to redeem the shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879 + Details
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- Definition The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685 + Details
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