Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings
12 Months Ended
Mar. 31, 2022
Disclosure of Repurchase Agreements [Abstract]  
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings REPURCHASE AGREEMENTS, AND SECURITIES LENDING TRANSACTIONS ACCOUNTED FOR AS SECURED BORROWINGS
The following tables present gross obligations for payables under repurchase agreements, payables under securities lending transactions and obligations to return securities received as collateral by remaining contractual maturity and class of collateral pledged at March 31, 2021 and 2022. Potential risks associated with these arrangements primarily relate to market and liquidity risks. To manage risks associated with market exposure, the MUFG Group generally revalues the collateral underlying its repurchase agreements and securities lending transactions on a daily basis and monitors the value of the underlying securities, consisting of primarily high-quality securities such as Japanese national government and Japanese government agency bonds, and foreign government and official institution bonds. In the event the market value of such securities falls below the related agreements at contract amounts plus accrued interest, the MUFG Group may be required to deposit additional collateral when appropriate. To address liquidity risks, the MUFG Group conducts stress tests to ensure the adequate level of liquidity is maintained in the event of a decline in the fair value of any collateral pledged.
 March 31, 2021
 Remaining Contractual Maturity
 
Overnight
 and open
 
30 days
 or less
 
31-90
 days
 
Over
 90 days
 Total
 (in billions)
Payables under repurchase agreements¥6,006 ¥16,888 ¥1,973 ¥1,933 ¥26,800 
Payables under securities lending transactions7892628843
Obligations to return securities received as collateral5,6072785281696,582
Total¥12,402 ¥17,192 ¥2,529 ¥2,102 ¥34,225 
 March 31, 2022
 Remaining Contractual Maturity
 
Overnight
 and open
 
30 days
 or less
 
31-90
 days
 
Over
 90 days
 Total
 (in billions)
Payables under repurchase agreements¥6,703 ¥17,050 ¥3,934 ¥2,030 ¥29,717 
Payables under securities lending transactions972952911,097
Obligations to return securities received as collateral5,7824504371576,826
Total¥13,457 ¥17,595 ¥4,400 ¥2,188 ¥37,640 
Secured borrowing by the class of collateral pledged at March 31, 2021 and 2022 was as follows:
 March 31, 2021
 
Payables under
 repurchase
 agreements
 
Payables under
 securities lending
 transactions
 
Obligations
 to return
 securities received
 as collateral
 Total
 (in billions)
Japanese national government and Japanese government agency bonds¥7,754 ¥104 ¥4,022 ¥11,880 
Foreign government and official institution bonds13,9141773814,669
Corporate bonds7021214917
Residential mortgage-backed securities3,7293,729
Other debt securities2185223
Marketable equity securities4627211,6032,786
Other2121
Total¥26,800 ¥843 ¥6,582 ¥34,225 
        
 March 31, 2022
 
Payables under
 repurchase
 agreements
 
Payables under
 securities lending
 transactions
 
Obligations
 to return
 securities received
 as collateral
 Total
 (in billions)
Japanese national government and Japanese government agency bonds¥7,486 ¥359 ¥4,199 ¥12,044 
Foreign government and official institution bonds14,116111,01715,144
Corporate bonds745683301,143
Residential mortgage-backed securities6,72016,721
Other debt securities2762278
Marketable equity securities3606411,2782,279
Other141731
Total¥29,717 ¥1,097 ¥6,826 ¥37,640