v3.25.2
Intangible Assets (Tables)
 12 Months Ended
Mar. 31, 2025
Intangible assets other than goodwill [abstract]  
Schedule of Reconciliation of Changes in Intangible Assets
JPY (millions)
For the Year Ended March 31
20242025
Acquisition cost
As of beginning of the year¥4,790,723 ¥5,410,067 
Reclassification to assets held for sale (Note 19)
(6,626)(6,999)
Foreign currency translation differences and others625,970 (78,637)
As of end of the year¥5,410,067 ¥5,324,430 
Carrying amount
As of beginning of the year¥4,790,723 ¥5,410,067 
As of end of the year5,410,067 5,324,430 
JPY (millions)
Acquisition costSoftwareIntangible assets associated with productsOtherTotal
As of April 1, 2023
¥219,559 ¥7,324,072 ¥11,839 ¥7,555,471 
Additions and other increases47,179 124,878 206 172,263 
Disposals and other decreases(4,885)(57,869)(149)(62,903)
Reclassification to assets held for sale (Note 19)
(266)(33,052)— (33,318)
Foreign currency translation differences27,529 942,404 48 969,980 
As of March 31, 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 19)
(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 
Accumulated amortization and
accumulated impairment losses
As of April 1, 2023
¥(96,220)¥(3,189,051)¥(542)¥(3,285,813)
Amortization(32,587)(521,998)(83)(554,668)
Impairment losses(3,126)(166,278)— (169,405)
Reversal of impairment losses— 35,686 — 35,686 
Disposals and other decreases4,614 57,838 11 62,462 
Reclassification to assets held for sale (Note 19)
203 26,558 — 26,761 
Foreign currency translation differences(12,366)(429,462)(5)(441,833)
As of March 31, 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 19)
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)
Carrying amount
As of April 1, 2023
¥123,340 ¥4,135,020 ¥11,297 ¥4,269,657 
As of March 31, 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 
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, 2023
¥3,164,380 ¥970,640 ¥4,135,020 
As of March 31, 2024
3,148,680 965,045 4,113,726 
As of March 31, 2025
2,556,431 919,342 3,475,773 
The table below provides information about significant intangible assets.
JPY (millions)
Carrying amount
Remaining amortization period
As of March 31As of March 31
202420252025
ImmunoglobulinsMarketed products¥795,903 ¥710,287 10 Years
Zasocitinib (TAK-279)
In-process R&D
613,329 609,329 -
TAKHZYROMarketed products562,434 496,676 9 Years
ADVATE & ADYNOVATE/ADYNOVIMarketed products269,275 220,595 5 Years
ALUNBRIGMarketed products212,376 163,329 6 Years
VYVANSE/ELVANSEMarketed products223,589 95,566 1 Year
Schedule of Significant Assumptions Used to Calculate the Recoverable Amount
For the year ended March 31, 2023, the recoverable amount was calculated at value in use and the significant assumptions used are as follows:
Discount rate
(Post-tax)		Discount rate
(Pre-tax)
For the year ended March 31, 2023
6.5% - 22.0%
8.6% - 27.5%