v3.26.1
Goodwill and intangible assets - Summary of Changes In Content Assets (Detail) - Content assets [member] - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance ¥ 2,249,048 ¥ 1,928,113
Changes in carrying amount:    
Additions 808,716 741,391
Acquisitions through business combinations and other 40,360 213,585
Disposals or classified as held for sale (51,420) (44,275)
Amortization (595,178) (535,829)
Impairment losses (77,164) (15,095)
Translation adjustment 184,253 (38,842)
Total changes 309,567 320,935
Ending Balance 2,558,615 2,249,048
Film costs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 563,142 531,476
Changes in carrying amount:    
Additions 475,564 425,914
Acquisitions through business combinations and other 0 1,868
Disposals or classified as held for sale (50,119) (43,614)
Amortization (378,855) (328,167)
Impairment losses (20,177) (14,449)
Translation adjustment 44,281 (9,886)
Total changes 70,694 31,666
Ending Balance 633,836 563,142
Broadcasting rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 123,684 124,241
Changes in carrying amount:    
Additions 104,069 112,579
Disposals or classified as held for sale (627) (97)
Amortization (96,772) (110,057)
Impairment losses 0 (88)
Translation adjustment 7,018 (2,894)
Total changes 13,688 (557)
Ending Balance 137,372 123,684
Music catalogs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 1,334,810 1,066,018
Changes in carrying amount:    
Additions 152,768 141,927
Acquisitions through business combinations and other 39,586 202,660
Amortization (59,510) (51,825)
Impairment losses (587)  
Translation adjustment 118,825 (23,970)
Total changes 251,082 268,792
Ending Balance 1,585,892 1,334,810
Artist contracts [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 39,895 35,656
Changes in carrying amount:    
Additions 3,706 4,941
Acquisitions through business combinations and other 774 3,273
Disposals or classified as held for sale (674) (564)
Amortization (3,776) (2,760)
Impairment losses (53) 0
Translation adjustment 3,431 (651)
Total changes 3,408 4,239
Ending Balance 43,303 39,895
Music distribution rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 37,138 35,121
Changes in carrying amount:    
Additions 171 17
Acquisitions through business combinations and other 0 5,784
Amortization (2,236) (3,639)
Impairment losses 0 (13)
Translation adjustment 1,499 (132)
Total changes (566) 2,017
Ending Balance 36,572 37,138
Game content [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 150,379 135,601
Changes in carrying amount:    
Additions 72,438 56,013
Disposals or classified as held for sale   0
Amortization (54,029) (39,381)
Impairment losses (56,347) (545)
Translation adjustment 9,199 (1,309)
Total changes (28,739) 14,778
Ending Balance 121,640 150,379
Gross carrying amount [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 8,135,416 7,423,874
Changes in carrying amount:    
Ending Balance 9,513,158 8,135,416
Gross carrying amount [member] | Film costs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 5,522,693 5,216,247
Changes in carrying amount:    
Ending Balance 6,356,737 5,522,693
Gross carrying amount [member] | Broadcasting rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 555,679 528,970
Changes in carrying amount:    
Ending Balance 652,384 555,679
Gross carrying amount [member] | Music catalogs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 1,716,674 1,401,970
Changes in carrying amount:    
Ending Balance 2,062,201 1,716,674
Gross carrying amount [member] | Artist contracts [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 61,012 54,131
Changes in carrying amount:    
Ending Balance 69,170 61,012
Gross carrying amount [member] | Music distribution rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 57,952 52,498
Changes in carrying amount:    
Ending Balance 61,272 57,952
Gross carrying amount [member] | Game content [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 221,406 170,058
Changes in carrying amount:    
Ending Balance 311,394 221,406
Accumulated amortization and impairment losses [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (5,886,368) (5,495,761)
Changes in carrying amount:    
Ending Balance (6,954,543) (5,886,368)
Accumulated amortization and impairment losses [member] | Film costs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (4,959,551) (4,684,771)
Changes in carrying amount:    
Ending Balance (5,722,901) (4,959,551)
Accumulated amortization and impairment losses [member] | Broadcasting rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (431,995) (404,729)
Changes in carrying amount:    
Ending Balance (515,012) (431,995)
Accumulated amortization and impairment losses [member] | Music catalogs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (381,864) (335,952)
Changes in carrying amount:    
Ending Balance (476,309) (381,864)
Accumulated amortization and impairment losses [member] | Artist contracts [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (21,117) (18,475)
Changes in carrying amount:    
Ending Balance (25,867) (21,117)
Accumulated amortization and impairment losses [member] | Music distribution rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (20,814) (17,377)
Changes in carrying amount:    
Ending Balance (24,700) (20,814)
Accumulated amortization and impairment losses [member] | Game content [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (71,027) (34,457)
Changes in carrying amount:    
Ending Balance ¥ (189,754) ¥ (71,027)