Consolidated Balance Sheets (Parenthetical) - JPY (¥)
¥ in Millions |
Mar. 31, 2022 |
Mar. 31, 2021 |
| Statement of Financial Position [Abstract] |
|
|
| Trading account assets pledged that secured parties are permitted to sell or repledge |
¥ 8,857,073
|
¥ 5,032,178
|
| Trading account assets measured at fair value under fair value option |
17,135,481
|
18,231,238
|
| Available-for-sale debt securities pledged that secured parties are permitted to sell or repledge |
3,151,799
|
2,877,061
|
| Held-to-maturity debt securities pledged that secured parties are permitted to sell or repledge |
148,763
|
105,029
|
| Held-to-maturity debt securities, Fair value |
4,606,305
|
3,939,143
|
| Equity securities pledged that secured parties are permitted to sell or repledge |
741
|
1,532
|
| Equity securities measured at fair value |
5,111,630
|
5,866,846
|
| Loans, net of unearned income, unamortized premiums and deferred loan fees, pledged that secured parties are permitted to sell or repledge |
167,152
|
204,488
|
| Allowance for credit losses |
13,998
|
14,741
|
| Due to trust account and other short-term borrowings measured at fair value under fair value option |
123,028
|
196,113
|
| Long-term debt measured at fair value under fair value option |
¥ 483,051
|
¥ 402,823
|
| Common stock, authorized (in shares) |
33,000,000,000
|
33,000,000,000
|
| Common stock, issued (in shares) |
13,281,995,120
|
13,581,995,120
|
| Common stock, stated value (JPY per share) |
¥ 0
|
¥ 0
|
| Treasury stock, shares (in shares) |
668,286,238
|
737,282,154
|