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Goodwill and Intangible Assets, Net
 12 Months Ended
Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, Net Goodwill and Intangible Assets, Net
Goodwill
In the second quarter of fiscal 2026, the Company implemented a new segment reporting structure which resulted in four reportable segments: North American Pharmaceutical, Oncology & Multispecialty, Prescription Technology Solutions, and Medical-Surgical Solutions. These reportable segments encompass all operating segments of the Company. The Company’s former Norwegian operations are included in Other.
Changes in the carrying amount of goodwill were as follows:
(In millions)North American PharmaceuticalOncology & MultispecialtyPrescription Technology SolutionsMedical-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 adjustments5 (51)(8)54 — — 
Balance, March 31, 20252,737 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, net44 — — — 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.
Goodwill Impairment Charges
The Company evaluates goodwill for impairment on an annual basis in the first fiscal quarter, and more frequently if indicators for potential impairment exist. Goodwill impairment testing is conducted at the reporting unit level, which is generally defined as an operating segment or one level below an operating segment (also known as a component), for which discrete financial information is available and segment management regularly reviews the operating results of that reporting unit.
The fair value of the reporting units is determined using a combination of an income approach based on a DCF model and a market approach based on appropriate valuation multiples observed for the reporting unit’s guideline public companies. Fair value estimates result from a complex series of judgments about future events and uncertainties and relies heavily on estimates and assumptions that have been deemed reasonable by management as of the measurement date. Any material changes in key assumptions, including additional government reimbursement reductions, deterioration in the financial markets, an increase in interest rates, or an increase in the cost of equity financing by market participants within the industry, or other unanticipated events and circumstances, may affect such estimates. The discount rates are the weighted-average cost of capital measuring the reporting unit’s cost of debt and equity financing weighted by the percentage of debt and percentage of equity in a company’s target capital. The unsystematic risk premium is an input factor used in calculating the discount rate that specifically addresses uncertainty related to the reporting unit’s future cash flow projections. Fair value assessments of the reporting unit are considered a Level 3 measurement due to the significance of unobservable inputs developed using company-specific information.
The annual impairment testing performed for fiscal 2026, fiscal 2025, and fiscal 2024 did not indicate any impairment of goodwill.
Intangible Assets
Information regarding intangible assets were as follows:
March 31, 2026March 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 relationships10$1,477 $(717)$760 $1,475 $(650)$825 
Service agreements233,249 (833)2,416 1,116 (728)388
Trademarks and trade names20576 (293)283 378(278)100
Provider networks
21383 (15)368 — — — 
Technology9317 (160)157 288(141)147
Other22127 (32)95 31(27)4
Total$6,129 $(2,050)$4,079 $3,288 $(1,824)$1,464 
All intangible assets were subject to amortization as of March 31, 2026 and 2025. Amortization of intangible assets of the Canadian retail disposal group previously classified as held for sale and disposed in December 2024 ceased in the second quarter of fiscal 2025. Amortization expense of intangible assets was $276 million, $226 million, and $249 million for fiscal 2026, fiscal 2025, and fiscal 2024, respectively.
Estimated amortization expense of the assets listed in the table above is as follows:
(In millions)Estimated Amortization Expense
Fiscal 2027$282 
Fiscal 2028278 
Fiscal 2029276 
Fiscal 2030272 
Fiscal 2031264 
Thereafter2,707