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v3.24.3

Fair Value Measurements and Investments - Schedule of Assets and Liabilities Measured (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Assets |  |
Investment securities | $ 5,451 | $ 5,725
Level 1 | Fair Value, Measurements, Recurring |  |
Assets |  |
Total | 15,684 | 18,483
Liabilities |  |
Total | 238 | 175
Level 1 | Fair Value, Measurements, Recurring | Deferred compensation liability |  |
Liabilities |  |
Deferred compensation liability | 238 | 175
Level 1 | Fair Value, Measurements, Recurring | Derivative instruments |  |
Liabilities |  |
Derivative instruments | 0 | 0
Level 2 | Fair Value, Measurements, Recurring |  |
Assets |  |
Total | 599 | 1,401
Liabilities |  |
Total | 226 | 396
Level 2 | Fair Value, Measurements, Recurring | Deferred compensation liability |  |
Liabilities |  |
Deferred compensation liability | 0 | 0
Level 2 | Fair Value, Measurements, Recurring | Derivative instruments |  |
Liabilities |  |
Derivative instruments | 226 | 396
Money market funds | Level 1 | Fair Value, Measurements, Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 10,403 | 13,504
Other current and non-current assets: | 25 | 23
Money market funds | Level 2 | Fair Value, Measurements, Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 0 | 0
Other current and non-current assets: | 0 | 0
U.S. Treasury securities | Level 1 | Fair Value, Measurements, Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 7 | 301
Investment securities | 4,948 | 4,316
U.S. Treasury securities | Level 2 | Fair Value, Measurements, Recurring |  |
Assets |  |
Cash equivalents and restricted cash equivalents: | 0 | 0
Investment securities | 0 | 0
Marketable equity securities | Level 1 | Fair Value, Measurements, Recurring |  |
Assets |  |
Marketable equity securities | 301 | 339
Marketable equity securities | Level 2 | Fair Value, Measurements, Recurring |  |
Assets |  |
Marketable equity securities | 0 | 0
U.S. government-sponsored debt securities | Level 1 | Fair Value, Measurements, Recurring |  |
Assets |  |
Investment securities | 0 | 0
U.S. government-sponsored debt securities | Level 2 | Fair Value, Measurements, Recurring |  |
Assets |  |
Investment securities | 496 | 1,108
Derivative instruments | Level 1 | Fair Value, Measurements, Recurring |  |
Assets |  |
Other current and non-current assets: | 0 | 0
Derivative instruments | Level 2 | Fair Value, Measurements, Recurring |  |
Assets |  |
Other current and non-current assets: | $ 103 | $ 293

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