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Variable Interest Entities Variable Interest Entities (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013 | Aug. 09, 2013 | Jan. 17, 2012
Variable Interest Entities |  |  |  |  |
Interest expense | $ 63 | $ 64 | $ 50 |  |
VIE Financing |  |  |  |  |
Membership interests of VIE subject to mandatory redemption | 47 | 50 |  | $ 40 |
Financial instruments subject to mandatory redemption, interest rate, stated percentage |  |  |  | 7.00% |
Liabilities |  |  |  |  |
Total liabilities | 1,328 | 1,362 |  |  | $ 1,000
SCCG |  |  |  |  |
VIE Financing |  |  |  |  |
Face Amount |  |  |  | $ 360 |
JSCCG |  |  |  |  |
VIE Financing |  |  |  |  |
Face Amount |  |  |  |  | 900
Holdco |  |  |  |  |
VIE Financing |  |  |  |  |
Face Amount |  |  |  |  | $ 100
Accrued interest of VIE |  |  |  |  |
Liabilities |  |  |  |  |
Total liabilities | 12 | 12 |  |  |
Current portion of membership interests of VIE subject to mandatory redemption |  |  |  |  |
Liabilities |  |  |  |  |
Total liabilities | 2 | 2 |  |  |
Current maturities of long-term debt of VIE |  |  |  |  |
Liabilities |  |  |  |  |
Total liabilities | 33 | 32 |  |  |
Total current liabilities of VIE |  |  |  |  |
Liabilities |  |  |  |  |
Total liabilities | 47 | 46 |  |  |
Membership interests of VIE subject to mandatory redemption |  |  |  |  |
Liabilities |  |  |  |  |
Total liabilities | 35 | 37 |  |  |
Long-term debt of VIE |  |  |  |  |
Liabilities |  |  |  |  |
Total liabilities | $ 1,246 | $ 1,279 |  |  |

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