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Derivative Financial Instruments - Summary of Amounts Recorded in Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 30, 2019
Other Noncurrent Assets
Derivatives, Fair Value [Line Items]
Other assets	$ 0	$ 2
Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Other liabilities	$ (38)	$ (13)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

+ References

No definition available.

+ Details

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