v3.25.2
Goodwill and intangible assets - Summary of Changes In Content Assets (Detail) - Content assets [member] - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance ¥ 1,928,113 ¥ 1,561,882
Changes in carrying amount:    
Additions 741,391 533,938
Acquisitions through business combinations and other 213,585 247,586
Disposals or classified as held for sale (44,275) (43,749)
Amortization (535,829) (571,008)
Impairment losses (15,095) (15,417)
Translation adjustment (38,842) 214,881
Total changes 320,935 366,231
Ending Balance 2,249,048 1,928,113
Film costs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 531,476 572,930
Changes in carrying amount:    
Additions 425,914 329,104
Acquisitions through business combinations and other 1,868  
Disposals or classified as held for sale (43,614) (35,927)
Amortization (328,167) (397,855)
Impairment losses (14,449) (13,454)
Translation adjustment (9,886) 76,678
Total changes 31,666 (41,454)
Ending Balance 563,142 531,476
Broadcasting rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 124,241 112,557
Changes in carrying amount:    
Additions 112,579 97,028
Disposals or classified as held for sale (97) (7,371)
Amortization (110,057) (93,240)
Impairment losses (88) (883)
Translation adjustment (2,894) 16,150
Total changes (557) 11,684
Ending Balance 123,684 124,241
Music catalogs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 1,066,018 752,294
Changes in carrying amount:    
Additions 141,927 20,842
Acquisitions through business combinations and other 202,660 229,884
Amortization (51,825) (43,779)
Translation adjustment (23,970) 106,777
Total changes 268,792 313,724
Ending Balance 1,334,810 1,066,018
Artist contracts [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 35,656 15,986
Changes in carrying amount:    
Additions 4,941 3,061
Acquisitions through business combinations and other 3,273 15,075
Disposals or classified as held for sale (564) (224)
Amortization (2,760) (1,394)
Impairment losses   (16)
Translation adjustment (651) 3,168
Total changes 4,239 19,670
Ending Balance 39,895 35,656
Music distribution rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 35,121 33,449
Changes in carrying amount:    
Additions 17 146
Acquisitions through business combinations and other 5,784 2,627
Amortization (3,639) (3,146)
Impairment losses (13)  
Translation adjustment (132) 2,045
Total changes 2,017 1,672
Ending Balance 37,138 35,121
Game content [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 135,601 74,666
Changes in carrying amount:    
Additions 56,013 83,757
Disposals or classified as held for sale   (227)
Amortization (39,381) (31,594)
Impairment losses (545) (1,064)
Translation adjustment (1,309) 10,063
Total changes 14,778 60,935
Ending Balance 150,379 135,601
Gross carrying amount [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 7,423,874 5,923,847
Changes in carrying amount:    
Ending Balance 8,135,416 7,423,874
Gross carrying amount [member] | Film costs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 5,216,247 4,320,022
Changes in carrying amount:    
Ending Balance 5,522,693 5,216,247
Gross carrying amount [member] | Broadcasting rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 528,970 419,025
Changes in carrying amount:    
Ending Balance 555,679 528,970
Gross carrying amount [member] | Music catalogs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 1,401,970 1,008,942
Changes in carrying amount:    
Ending Balance 1,716,674 1,401,970
Gross carrying amount [member] | Artist contracts [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 54,131 32,484
Changes in carrying amount:    
Ending Balance 61,012 54,131
Gross carrying amount [member] | Music distribution rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 52,498 45,988
Changes in carrying amount:    
Ending Balance 57,952 52,498
Gross carrying amount [member] | Game content [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance 170,058 97,386
Changes in carrying amount:    
Ending Balance 221,406 170,058
Accumulated amortization and impairment losses [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (5,495,761) (4,361,965)
Changes in carrying amount:    
Ending Balance (5,886,368) (5,495,761)
Accumulated amortization and impairment losses [member] | Film costs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (4,684,771) (3,747,092)
Changes in carrying amount:    
Ending Balance (4,959,551) (4,684,771)
Accumulated amortization and impairment losses [member] | Broadcasting rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (404,729) (306,468)
Changes in carrying amount:    
Ending Balance (431,995) (404,729)
Accumulated amortization and impairment losses [member] | Music catalogs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (335,952) (256,648)
Changes in carrying amount:    
Ending Balance (381,864) (335,952)
Accumulated amortization and impairment losses [member] | Artist contracts [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (18,475) (16,498)
Changes in carrying amount:    
Ending Balance (21,117) (18,475)
Accumulated amortization and impairment losses [member] | Music distribution rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (17,377) (12,539)
Changes in carrying amount:    
Ending Balance (20,814) (17,377)
Accumulated amortization and impairment losses [member] | Game content [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning Balance (34,457) (22,720)
Changes in carrying amount:    
Ending Balance ¥ (71,027) ¥ (34,457)