Employee Benefits - Narrative (Details) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
Employee Benefits [Abstract] | |||
Employee service period required for benefits | 3 years | ||
Weighted average duration of defined benefit obligations | 12 years 1 month 6 days | 12 years 6 months | |
Estimate of contributions expected to be paid to plan for next annual reporting period | ¥ 10,168 | ||
Defined contribution costs | ¥ 52,692 | ¥ 60,521 | ¥ 46,446 |