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Goodwill and Intangible Assets, Net (Tables) | 12 Months Ended
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Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of changes in the carrying amount of goodwill | Changes in the carrying amount of goodwill were as follows:
(In millions) | North American Pharmaceutical |  | Oncology & Multispecialty |  | Prescription Technology Solutions |  | Medical-Surgical Solutions |  | Other |  | Total
Balance, March 31, 2024 | $ | 2,857 |  |  | $ | 2,775 |  |  | $ | 2,024 |  |  | $ | 2,453 |  |  | $ | 23 |  |  | $ | 10,132 |
Goodwill acquired | 1 |  |  | — |  |  | 11 |  |  | — |  |  | 4 |  |  | 16 |
Disposals (1) | (46) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (46) |
Foreign currency translation adjustments, net | (80) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (80) |
Other adjustments | 5 |  |  | (51) |  |  | (8) |  |  | 54 |  |  | — |  |  | — |
Balance, March 31, 2025 | 2,737 |  |  | 2,724 |  |  | 2,027 |  |  | 2,507 |  |  | 27 |  |  | 10,022 |
Goodwill acquired (2) | — |  |  | 1,266 |  |  | 39 |  |  | — |  |  | — |  |  | 1,305 |
Disposals (3) | — |  |  | (9) |  |  | — |  |  | — |  |  | (28) |  |  | (37) |
Foreign currency translation adjustments, net | 44 |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | 45 |
Other adjustments (4) | — |  |  | (18) |  |  | (1) |  |  | — |  |  | — |  |  | (19) |
Balance, March 31, 2026 | $ | 2,781 |  |  | $ | 3,963 |  |  | $ | 2,065 |  |  | $ | 2,507 |  |  | $ | — |  |  | $ | 11,316 |
(1)Goodwill related to the Canadian retail disposal group. Refer to Financial Note 2, “Business Acquisitions and Divestitures,” for more details. (2)Primarily reflects goodwill of $432 million for the PRISM Vision acquisition and $806 million for the Core Ventures acquisition. Refer to Financial Note 2, “Business Acquisitions and Divestitures,” for more details. (3)Other reflects $28 million of goodwill related to the Norway disposal group. Refer to Financial Note 2, “Business Acquisitions and Divestitures,” for more details. (4)Primarily reflects acquisition-related goodwill adjustments. Refer to Financial Note 2, “Business Acquisitions and Divestitures,” for more details.
Schedule of information regarding intangible assets | Information regarding intangible assets were as follows:
| March 31, 2026 |  | March 31, 2025
(Dollars in millions) | Weighted- Average Remaining Amortization Period (Years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships | 10 |  | $ | 1,477 |  |  | $ | (717) |  |  | $ | 760 |  |  | $ | 1,475 |  |  | $ | (650) |  |  | $ | 825 |
Service agreements | 23 |  | 3,249 |  |  | (833) |  |  | 2,416 |  |  | 1,116 |  |  | (728) |  |  | 388
Trademarks and trade names | 20 |  | 576 |  |  | (293) |  |  | 283 |  |  | 378 |  | (278) |  |  | 100
Provider networks | 21 |  | 383 |  |  | (15) |  |  | 368 |  |  | — |  |  | — |  |  | — |
Technology | 9 |  | 317 |  |  | (160) |  |  | 157 |  |  | 288 |  | (141) |  |  | 147
Other | 22 |  | 127 |  |  | (32) |  |  | 95 |  |  | 31 |  | (27) |  |  | 4
Total |  |  | $ | 6,129 |  |  | $ | (2,050) |  |  | $ | 4,079 |  |  | $ | 3,288 |  |  | $ | (1,824) |  |  | $ | 1,464 |
Schedule of Estimated Amortization Expense of Assets | Estimated amortization expense of the assets listed in the table above is as follows:
(In millions) |  | Estimated Amortization Expense
Fiscal 2027 |  | $ | 282 |
Fiscal 2028 |  | 278 |
Fiscal 2029 |  | 276 |
Fiscal 2030 |  | 272 |
Fiscal 2031 |  | 264 |
Thereafter |  | 2,707 |

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