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v3.23.1

Fair Value Measurements and Investments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Sep. 30, 2022
--- | --- | ---
Assets |  |
Investment securities | $ 5,265 | $ 5,261
Level 1 | Recurring |  |
Assets |  |
Total | 16,146 | 16,999
Liabilities |  |
Total | 171 | 146
Level 1 | Recurring | Deferred compensation liability |  |
Liabilities |  |
Deferred compensation liability | 171 | 146
Level 1 | Recurring | Derivative instruments |  |
Liabilities |  |
Derivative instruments | 0 | 0
Level 1 | Money market funds | Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 11,548 | 11,736
Other current and non-current assets: | 22 | 22
Level 1 | U.S. Treasury securities | Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 0 | 799
Investment securities | 4,249 | 4,005
Level 1 | Marketable equity securities | Recurring |  |
Assets |  |
Marketable equity securities | 327 | 437
Level 1 | U.S. government-sponsored debt securities | Recurring |  |
Assets |  |
Investment securities | 0 | 0
Level 1 | Derivative instruments | Recurring |  |
Assets |  |
Other current and non-current assets: | 0 | 0
Level 2 | Recurring |  |
Assets |  |
Total | 1,174 | 1,588
Liabilities |  |
Total | 389 | 418
Level 2 | Recurring | Deferred compensation liability |  |
Liabilities |  |
Deferred compensation liability | 0 | 0
Level 2 | Recurring | Derivative instruments |  |
Liabilities |  |
Derivative instruments | 389 | 418
Level 2 | Money market funds | Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 0 | 0
Other current and non-current assets: | 0 | 0
Level 2 | U.S. Treasury securities | Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 0 | 0
Investment securities | 0 | 0
Level 2 | Marketable equity securities | Recurring |  |
Assets |  |
Marketable equity securities | 0 | 0
Level 2 | U.S. government-sponsored debt securities | Recurring |  |
Assets |  |
Investment securities | 1,016 | 457
Level 2 | Derivative instruments | Recurring |  |
Assets |  |
Other current and non-current assets: | $ 158 | $ 1,131

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