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Derivative Financial Instruments - Summary of Amounts Recorded in Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Sep. 30, 2020
Other current assets
Derivatives, Fair Value [Line Items]
Other assets	$ 1	$ 0
Other current liabilities
Derivatives, Fair Value [Line Items]
Other liabilities	(1)	0
Other noncurrent assets
Derivatives, Fair Value [Line Items]
Other assets	0	0
Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Other liabilities	$ (30)	$ (38)

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- Definition

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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.

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