v3.25.2
Provisions - Schedule of Reconciliation of Changes in Provisions (Details) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Reconciliation of changes in other provisions [abstract]    
Beginning balance ¥ 538,793 ¥ 564,329
Increases 960,049 1,036,551
Decreases (utilized) (863,606) (1,109,294)
Decreases (reversed) (52,275) (44,568)
Foreign currency translation differences (14,644) 91,775
Ending balance 568,317 538,793
Legal proceedings provision    
Reconciliation of changes in other provisions [abstract]    
Beginning balance 22,342 64,290
Increases 7,181 54,679
Decreases (utilized) (16,959) (93,016)
Decreases (reversed) (63) (6,864)
Foreign currency translation differences (40) 3,253
Ending balance 12,462 22,342
Restructuring    
Reconciliation of changes in other provisions [abstract]    
Beginning balance 12,102 8,951
Increases 41,794 14,326
Decreases (utilized) (29,976) (10,716)
Decreases (reversed) (8,609) (1,664)
Foreign currency translation differences (1,316) 1,205
Ending balance 13,995 12,102
Rebates and return reserves    
Reconciliation of changes in other provisions [abstract]    
Beginning balance 483,259 465,214
Increases 871,225 956,682
Decreases (utilized) (799,841) (993,456)
Decreases (reversed) (42,854) (30,307)
Foreign currency translation differences (12,624) 85,127
Ending balance 499,165 483,259
Other    
Reconciliation of changes in other provisions [abstract]    
Beginning balance 21,089 25,874
Increases 39,848 10,864
Decreases (utilized) (16,829) (12,106)
Decreases (reversed) (750) (5,734)
Foreign currency translation differences (664) 2,191
Ending balance ¥ 42,695 ¥ 21,089