v3.25.2
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings (Tables)
 12 Months Ended
Mar. 31, 2025
Disclosure of Repurchase Agreements [Abstract]  
Gross Obligations by Remaining Contractual Maturity and Class of Collateral Pledged
 March 31, 2024 (As Adjusted)
 Remaining Contractual Maturity
 
Overnight
 and open
 
30 days
 or less
 
31-90
 days
 
Over
 90 days
 Total
 (in billions)
Payables under repurchase agreements¥8,846 ¥20,010 ¥7,209 ¥1,706 ¥37,771 
Payables under securities lending transactions1,015 1 — 76 1,092 
Obligations to return securities received as collateral6,076 610 135 402 7,223 
Total¥15,937 ¥20,621 ¥7,344 ¥2,184 ¥46,086 
 March 31, 2025
 Remaining Contractual Maturity
 
Overnight
 and open
 
30 days
 or less
 
31-90
 days
 
Over
 90 days
 Total
 (in billions)
Payables under repurchase agreements¥10,579 ¥29,902 ¥4,754 ¥1,146 ¥46,381 
Payables under securities lending transactions717 3 — 17 737 
Obligations to return securities received as collateral5,185 399 155 308 6,047 
Total¥16,481 ¥30,304 ¥4,909 ¥1,471 ¥53,165 
Secured Borrowing by the Class of Collateral Pledged
Secured borrowing by the class of collateral pledged at March 31, 2024 and 2025 was as follows:
 March 31, 2024 (As Adjusted)
 
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¥13,001 ¥359 ¥4,229 ¥17,589 
Foreign government and official institution bonds14,172 — 1,033 15,205 
Corporate bonds773 76 400 1,249 
Residential mortgage-backed securities8,819 — — 8,819 
Other debt securities346 — 38 384 
Marketable equity securities636 657 1,523 2,816 
Other24 — — 24 
Total¥37,771 ¥1,092 ¥7,223 ¥46,086 
        
 March 31, 2025
 
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¥16,652 ¥165 ¥3,438 ¥20,255 
Foreign government and official institution bonds16,955 30 917 17,902 
Corporate bonds1,012 — 358 1,370 
Residential mortgage-backed securities10,695 — — 10,695 
Other debt securities190 — 2 192 
Marketable equity securities846 531 1,332 2,709 
Other31 11 — 42 
Total¥46,381 ¥737 ¥6,047 ¥53,165