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v3.26.1

Debt - Additional Information (Details) - USD ($) |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Feb. 27, 2026 | Apr. 30, 2026 | Mar. 31, 2026 | Mar. 31, 2025
Commercial Paper |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument term (in years) |  |  | 397 days |
Debt instrument, maximum borrowing capacity |  |  | $ 3,000,000,000.0 |
Commercial paper, amount outstanding |  |  | 0 | $ 0
Commercial Paper | Subsequent Event |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from (repayments of) commercial paper |  | $ 500,000,000 |  |
Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate principal amount | $ 3,000,000,000.0 |  |  |
Proceeds from senior debt | $ 3,000,000,000.0 |  |  |
Senior Notes | December 2025 Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of senior debt |  |  | $ 4,000,000,000.0 |
Senior Notes | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument term (in years) | 3 years |  |  |
Stated interest rate (percent) | 3.80% |  |  |
Senior Notes | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument term (in years) | 10 years |  |  |
Stated interest rate (percent) | 4.70% |  |  |

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