v3.26.1
Intangible Assets (Tables)
 12 Months Ended
Mar. 31, 2026
Intangible assets other than goodwill [abstract]  
Schedule of Reconciliation of Changes in Intangible Assets
JPY (millions)
For the Year Ended March 31
20252026
Acquisition cost
As of beginning of the year¥5,410,067 ¥5,324,430 
Reclassification to assets held for sale (Note 18)
(6,999)(11,714)
Foreign currency translation differences and others(78,637)496,293 
As of end of the year¥5,324,430 ¥5,809,010 
Carrying amount
As of beginning of the year¥5,410,067 ¥5,324,430 
As of end of the year5,324,430 5,809,010 
JPY (millions)
Acquisition costSoftwareIntangible assets associated with productsOtherTotal
As of April 1, 2024
¥289,116 ¥8,300,433 ¥11,944 ¥8,601,492 
Additions and other increases38,769 55,345 134 94,248 
Disposals and other decreases(4,048)(15,453)(116)(19,617)
Reclassification to assets held for sale (Note 18)
(95)(11,108)— (11,204)
Foreign currency translation differences(4,424)(122,279)(9)(126,712)
As of March 31, 2025
¥319,318 ¥8,206,937 ¥11,953 ¥8,538,208 
Additions and other increases35,420 191,426 — 226,845 
Disposals and other decreases(15,002)(17,213)(24)(32,238)
Reclassification to assets held for sale (Note 18)
— (46,943)— (46,943)
Foreign currency translation differences32,307 640,053 59 672,419 
As of March 31, 2026
¥372,043 ¥8,974,261 ¥11,988 ¥9,358,291 
Accumulated amortization and
accumulated impairment losses
As of April 1, 2024
¥(139,483)¥(4,186,707)¥(620)¥(4,326,810)
Amortization(40,414)(548,660)(113)(589,187)
Impairment losses(556)(95,047)— (95,602)
Disposals and other decreases3,081 15,283 20 18,384 
Reclassification to assets held for sale (Note 18)
63 11,108 — 11,171 
Foreign currency translation differences2,538 72,858 1 75,397 
As of March 31, 2025
¥(174,771)¥(4,731,164)¥(713)¥(4,906,647)
Amortization(42,544)(504,475)(97)(547,116)
Impairment losses(762)(132,640)— (133,402)
Disposals and other decreases14,987 17,213 2 32,202 
Reclassification to assets held for sale (Note 18)
— 43,353 — 43,353 
Foreign currency translation differences(19,665)(407,643)(25)(427,332)
As of March 31, 2026
¥(222,756)¥(5,715,356)¥(832)¥(5,938,943)
Carrying amount
As of April 1, 2024
¥149,632 ¥4,113,726 ¥11,324 ¥4,274,682 
As of March 31, 2025
144,547 3,475,773 11,240 3,631,560 
As of March 31, 2026
149,287 3,258,905 11,156 3,419,348 
Schedule of Intangible Assets Associated with Products
The intangible assets associated with products are comprised of the following:
JPY (millions)
Marketed productsIn-process R&DCarrying amount
As of April 1, 2024
¥3,148,680 ¥965,045 ¥4,113,726 
As of March 31, 2025
2,556,431 919,342 3,475,773 
As of March 31, 2026
2,188,277 1,070,628 3,258,905 
The table below provides information about significant intangible assets.
JPY (millions)
Carrying amount
Remaining amortization period
As of March 31As of March 31
202520262026
ImmunoglobulinsMarketed products¥710,287 ¥682,868 9 Years
Zasocitinib (TAK-279) In-process R&D609,329 652,592 -
TAKHZYROMarketed products496,676 471,297 8 Years
ADVATE & ADYNOVATE/ADYNOVIMarketed products220,595 192,138 4 Years
ALUNBRIGMarketed products163,329 113,396 5 Years