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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Operating Leases
Operating lease right-of-use assets	$ 253	$ 268
Operating lease liabilities, current	40	43
Operating lease liabilities, noncurrent	269	287
Total operating lease liabilities	$ 309	$ 330
Weighted Average Remaining Lease Term
Operating leases	7 years	8 years
Weighted Average Discount Rate
Operating leases	4.67%	4.69%

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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