The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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Nominal or face amount used to calculate payments on the derivative asset.

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Fair value as of the balance sheet date of all foreign currency derivative assets designated as cash flow hedging instruments.

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The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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The aggregate fair value of assets received, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Derivative [Line Items]
Reduction in earnings from excluded forward points and ineffectiveness	$ 29	$ 27	$ 14
Expected amount of accumulated other comprehensive income (loss) expected to be reclassified	117
Foreign exchange derivative instruments \| Cash Flow Hedging
Derivative [Line Items]
The aggregate notional amount of the Company's foreign currency forward contracts outstanding	1,200	$ 1,200
Prepaid Expenses and Other Current Assets [Member]
Derivative [Line Items]
Cash flow hedges in an asset position	76
Accrued Liabilities [Member]
Derivative [Line Items]
Cash flow hedges in a liability position	13
Collateral received with counterparties	73
Other Assets [Member]
Derivative [Line Items]
Posted collateral	$ 4