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Condensed Consolidated Statements of Cash Flows (Parenthetical) - JPY (¥) ¥ in Millions	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Mar. 31, 2024
Statement of Cash Flows [Abstract]
Cash and Cash Equivalents	¥ 1,275,912	¥ 1,206,573	¥ 1,168,945
Restricted Cash	119,811	115,410	134,675
Cash, Cash Equivalents and Restricted Cash	¥ 1,395,723	¥ 1,321,983	¥ 1,303,620	¥ 1,185,307

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Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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