Employee Benefits - Schedule of Changes in Effect of Asset Ceiling (Details) - JPY (¥) ¥ in Millions |
12 Months Ended | |
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Mar. 31, 2026 |
Mar. 31, 2025 |
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| Disclosure of fair value of plan assets [line items] | ||
| Balance at beginning of the year | ¥ (116,083) | |
| Balance at end of the year | (127,576) | ¥ (116,083) |
| Effect of asset ceiling | ||
| Disclosure of fair value of plan assets [line items] | ||
| Balance at beginning of the year | 78,717 | 63,422 |
| Interest income | 1,897 | 1,059 |
| Remeasurement Changes in effect of asset ceiling | 17,792 | 14,237 |
| Balance at end of the year | ¥ 98,407 | ¥ 78,717 |
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [domain]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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