Employee benefits - Summary of Defined Contribution Expenses (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
Japanese Plans [Member] | |||
Disclosure of Detailed Information About Defined Contribution Plans Explanatory [Line Items] | |||
Total defined contribution expenses | ¥ 11,849 | ¥ 11,662 | ¥ 11,461 |
Foreign Plans [Member] | |||
Disclosure of Detailed Information About Defined Contribution Plans Explanatory [Line Items] | |||
Total defined contribution expenses | ¥ 17,209 | ¥ 16,137 | ¥ 17,271 |