Property, Plant and Equipment - Schedule of Expenses Related to Leases Not Included in the Measurement of the Lease Liabilities (Details) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
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Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
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Disclosure of detailed information about property, plant and equipment [abstract] | |||
Expense relating to short-term leases | ¥ 4,160 | ¥ 4,312 | ¥ 4,521 |
Expense relating to leases of low-value assets that are not short-term leases expenses | 493 | 887 | 1,255 |
Expense relating to variable lease payments | 11,250 | 10,954 | 4,794 |
Total expenses not included in lease liabilities | ¥ 15,904 | ¥ 16,152 | ¥ 10,570 |