CONSOLIDATED BALANCE SHEETS (Parenthetical) - JPY (¥) ¥ in Millions	Mar. 31, 2018	Mar. 31, 2017
Installment Loans, fair value	¥ 17,260	¥ 19,232
Investment in securities, measured at fair value	37,631	24,894
Other assets, measured at fair value	15,008	22,116
Policy Liabilities and Policy Account Balances	¥ 444,010	¥ 605,520
Common stock, authorized	2,590,000,000	2,590,000,000
Common stock, shares issued	1,324,495,728	1,324,107,328
Treasury stock, shares	44,494,856	21,520,267
Officer's Compensation Board Incentive Plan
Treasury stock, shares	1,651,443	2,126,076

Commercial Mortgage and Other Loans, Fair Value

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Policy Liabilities And Policy Account Balances Measured At Fair Value

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Fair value portion of other assets.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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