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Proprietary Capital Proprietary Capital - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) |  |  |
Net effect on earnings | $ 0 | $ 0 | $ 0
Net unrealized gain (loss) on future cash flow hedges | (72) | 4 | 78
Reclassification to earnings from cash flow hedges | (65) | $ 2 | $ 1
Reclassification to earnings from cash flow hedges in the next twelve months | $ 14 |  |

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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized in the next twelve months from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss). + References No definition available. + Details
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