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v3.26.1

Debt and Financing Activities - Long-Term Debt (Details) € in Millions, $ in Millions |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 03, 2025 USD ($) | Nov. 17, 2025 EUR (€) | May 30, 2025 USD ($) | Sep. 10, 2024 USD ($) | Mar. 31, 2026 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt outstanding |  |  |  |  | $ 6,500 | $ 5,700 |
Current portion of long-term debt |  |  |  |  | 1,267 | 1,191 |
Retired and redeemed outstanding principal amount |  |  |  |  | $ 1,207 | $ 519 | $ 288
Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Redemption price (as percent) |  |  | 101.00% | 101.00% |  |  |
Loans payable | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument, redemption period (in days) |  |  | 10 days | 10 days |  |  |
Loans payable | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument, redemption period (in days) |  |  | 60 days | 60 days |  |  |
4.65% Notes due May 30, 2030 | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate on debt instruments (as percent) |  |  | 4.65% |  | 4.65% |  |
Aggregate principal amount |  |  | $ 650 |  |  |  |
4.95% Notes due May 30, 2032 | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate on debt instruments (as percent) |  |  | 4.95% |  | 4.95% |  |
Aggregate principal amount |  |  | $ 650 |  |  |  |
5.25% Notes due May 30, 2035 | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate on debt instruments (as percent) |  |  | 5.25% |  | 5.25% |  |
Aggregate principal amount |  |  | $ 700 |  |  |  |
Notes | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Proceeds from issuance, net |  |  | $ 2,000 |  |  |  |
4.25% Notes due September 15, 2029 | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate on debt instruments (as percent) |  |  |  | 4.25% | 4.25% |  |
Aggregate principal amount |  |  |  | $ 500 |  |  |
Proceeds from issuance, net |  |  |  | $ 496 |  |  |
5.25% Notes due February 15, 2026 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate on debt instruments (as percent) |  |  |  | 5.25% |  |  |
5.25% Notes due February 15, 2026 | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Retired and redeemed outstanding principal amount |  |  |  | $ 500 |  |  |
Redemption price (as percent) |  |  |  | 100.00% |  |  |
1.50% Notes Due November 17, 2025 | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate on debt instruments (as percent) |  | 1.50% |  |  |  |  |
Retired and redeemed outstanding principal amount | € |  | € 600 |  |  |  |  |
0.90% Notes due December 3, 2025 | Loans payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate on debt instruments (as percent) | 0.90% |  |  |  | 0.90% |  |
Retired and redeemed outstanding principal amount | $ 500 |  |  |  |  |  |

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