Fair Value (Assets and Liabilities Measured at Fair Value by Level on Recurring Basis) (Detail) - JPY (¥)
¥ in Millions |
Mar. 31, 2025 |
Mar. 31, 2024 |
| Assets |
|
|
| Trading derivative assets |
¥ 20,748,000
|
¥ 15,351,000
|
| Available-for-sale debt securities |
30,413,168
|
31,422,967
|
| Equity securities |
4,633,194
|
6,132,369
|
| Liabilities |
|
|
| Trading derivative liabilities |
20,995,000
|
16,360,000
|
| Obligation to return securities received as collateral |
6,046,755
|
7,222,728
|
| Interest rate contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
14,896,000
|
9,505,000
|
| Liabilities |
|
|
| Trading derivative liabilities |
16,071,000
|
10,696,000
|
| Foreign exchange contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
5,625,000
|
5,657,000
|
| Liabilities |
|
|
| Trading derivative liabilities |
4,908,000
|
5,536,000
|
| Equity contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
146,000
|
123,000
|
| Liabilities |
|
|
| Trading derivative liabilities |
62,000
|
158,000
|
| Commodity contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
20,000
|
19,000
|
| Liabilities |
|
|
| Trading derivative liabilities |
20,000
|
18,000
|
| Credit derivatives |
|
|
| Assets |
|
|
| Trading derivative assets |
51,000
|
47,000
|
| Liabilities |
|
|
| Trading derivative liabilities |
53,000
|
62,000
|
| Other |
|
|
| Assets |
|
|
| Trading derivative assets |
10,000
|
0
|
| Liabilities |
|
|
| Trading derivative liabilities |
(119,000)
|
(110,000)
|
| Japanese national government and Japanese government agency bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
22,083,857
|
23,167,400
|
| Japanese prefectural and municipal bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
309,998
|
1,045,991
|
| Foreign government and official institution bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
4,078,469
|
3,302,551
|
| Corporate bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
903,883
|
1,026,468
|
| Residential mortgage-backed securities |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
1,122,251
|
1,229,525
|
| Asset-backed securities |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
1,412,151
|
1,247,146
|
| Other debt securities |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
502,559
|
403,886
|
| Fair value, recurring measurements |
|
|
| Assets |
|
|
| Trading account assets: |
38,377,502
|
34,132,182
|
| Trading derivative assets |
20,733,927
|
15,341,224
|
| Loans held for sale |
28,447
|
31,542
|
| Available-for-sale debt securities |
30,413,168
|
31,422,967
|
| Equity securities |
3,932,750
|
5,558,620
|
| Other |
2,739,166
|
2,481,221
|
| Total |
96,224,960
|
88,967,756
|
| Liabilities |
|
|
| Trading securities sold, not yet purchased |
392,105
|
108,213
|
| Trading derivative liabilities |
21,110,807
|
16,471,309
|
| Obligation to return securities received as collateral |
6,046,755
|
7,222,728
|
| Other |
217,874
|
196,135
|
| Total |
27,767,541
|
23,998,385
|
| Fair value, recurring measurements | Equity securities |
|
|
| Assets |
|
|
| Trading account assets: |
3,611,256
|
3,495,941
|
| Liabilities |
|
|
| Investment securities valued at net asset value |
264,458
|
277,252
|
| Unfunded commitments |
134,429
|
276,433
|
| Fair value, recurring measurements | Level 1 |
|
|
| Assets |
|
|
| Trading account assets: |
20,407,859
|
18,626,261
|
| Trading derivative assets |
58,729
|
90,334
|
| Loans held for sale |
0
|
0
|
| Available-for-sale debt securities |
23,867,794
|
23,569,981
|
| Equity securities |
3,779,986
|
5,400,634
|
| Other |
973,130
|
1,175,125
|
| Total |
49,087,498
|
48,862,335
|
| Liabilities |
|
|
| Trading securities sold, not yet purchased |
389,643
|
103,705
|
| Trading derivative liabilities |
48,534
|
117,567
|
| Obligation to return securities received as collateral |
5,754,639
|
6,955,707
|
| Other |
0
|
0
|
| Total |
6,192,816
|
7,176,979
|
| Fair value, recurring measurements | Level 1 | Equity securities |
|
|
| Assets |
|
|
| Trading account assets: |
2,660,196
|
2,168,339
|
| Fair value, recurring measurements | Level 2 |
|
|
| Assets |
|
|
| Trading account assets: |
15,222,947
|
13,463,967
|
| Trading derivative assets |
20,597,301
|
15,099,648
|
| Loans held for sale |
28,447
|
31,542
|
| Available-for-sale debt securities |
6,347,624
|
7,648,181
|
| Equity securities |
52,002
|
70,172
|
| Other |
1,757,936
|
1,226,942
|
| Total |
44,006,257
|
37,540,452
|
| Liabilities |
|
|
| Trading securities sold, not yet purchased |
2,462
|
4,508
|
| Trading derivative liabilities |
20,995,246
|
16,261,406
|
| Obligation to return securities received as collateral |
292,116
|
195,622
|
| Other |
267,202
|
189,649
|
| Total |
21,557,026
|
16,651,185
|
| Fair value, recurring measurements | Level 2 | Equity securities |
|
|
| Assets |
|
|
| Trading account assets: |
808,437
|
1,175,350
|
| Fair value, recurring measurements | Level 3 |
|
|
| Assets |
|
|
| Trading account assets: |
2,746,696
|
2,041,954
|
| Trading derivative assets |
77,897
|
151,242
|
| Loans held for sale |
0
|
0
|
| Available-for-sale debt securities |
197,750
|
204,805
|
| Equity securities |
100,762
|
87,814
|
| Other |
8,100
|
79,154
|
| Total |
3,131,205
|
2,564,969
|
| Liabilities |
|
|
| Trading securities sold, not yet purchased |
0
|
0
|
| Trading derivative liabilities |
67,027
|
92,336
|
| Obligation to return securities received as collateral |
0
|
71,399
|
| Other |
(49,328)
|
6,486
|
| Total |
17,699
|
170,221
|
| Fair value, recurring measurements | Level 3 | Equity securities |
|
|
| Assets |
|
|
| Trading account assets: |
142,623
|
152,252
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
22,083,857
|
23,167,400
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
6,895,255
|
6,673,973
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds | Level 1 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
21,152,903
|
21,336,860
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
6,140,726
|
6,278,228
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds | Level 2 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
930,954
|
1,830,540
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
754,529
|
395,745
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds | Level 3 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Japanese national government and Japanese government agency bonds | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
309,998
|
1,045,991
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
288,472
|
91,683
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds | Level 1 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds | Level 2 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
309,998
|
1,045,991
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
288,472
|
91,683
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds | Level 3 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Japanese prefectural and municipal bonds | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Foreign government and official institution bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
4,078,469
|
3,302,551
|
| Fair value, recurring measurements | Foreign government and official institution bonds | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
12,376,957
|
10,839,573
|
| Fair value, recurring measurements | Foreign government and official institution bonds | Level 1 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
2,714,891
|
2,233,121
|
| Fair value, recurring measurements | Foreign government and official institution bonds | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
11,602,182
|
10,170,757
|
| Fair value, recurring measurements | Foreign government and official institution bonds | Level 2 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
1,363,578
|
1,069,430
|
| Fair value, recurring measurements | Foreign government and official institution bonds | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
774,775
|
668,715
|
| Fair value, recurring measurements | Foreign government and official institution bonds | Level 3 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Foreign government and official institution bonds | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
101
|
| Fair value, recurring measurements | Corporate bonds |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
903,883
|
1,026,468
|
| Fair value, recurring measurements | Corporate bonds | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
2,897,938
|
2,732,894
|
| Fair value, recurring measurements | Corporate bonds | Level 1 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Corporate bonds | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
4,755
|
8,937
|
| Fair value, recurring measurements | Corporate bonds | Level 2 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
898,304
|
1,021,296
|
| Fair value, recurring measurements | Corporate bonds | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
2,717,719
|
2,723,957
|
| Fair value, recurring measurements | Corporate bonds | Level 3 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
5,579
|
5,172
|
| Fair value, recurring measurements | Corporate bonds | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
175,464
|
0
|
| Fair value, recurring measurements | Residential mortgage-backed securities |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
1,122,251
|
1,229,525
|
| Fair value, recurring measurements | Residential mortgage-backed securities | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
7,313,220
|
5,422,286
|
| Fair value, recurring measurements | Residential mortgage-backed securities | Level 1 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Residential mortgage-backed securities | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Residential mortgage-backed securities | Level 2 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
1,122,236
|
1,229,510
|
| Fair value, recurring measurements | Residential mortgage-backed securities | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
7,313,220
|
5,422,286
|
| Fair value, recurring measurements | Residential mortgage-backed securities | Level 3 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
15
|
15
|
| Fair value, recurring measurements | Residential mortgage-backed securities | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Asset-backed securities |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
1,412,151
|
1,247,146
|
| Fair value, recurring measurements | Asset-backed securities | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
3,096,186
|
2,726,946
|
| Fair value, recurring measurements | Asset-backed securities | Level 1 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Asset-backed securities | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Asset-backed securities | Level 2 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
1,269,867
|
1,114,195
|
| Fair value, recurring measurements | Asset-backed securities | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
1,279,679
|
1,374,191
|
| Fair value, recurring measurements | Asset-backed securities | Level 3 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
142,284
|
132,951
|
| Fair value, recurring measurements | Asset-backed securities | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
1,816,507
|
1,352,755
|
| Fair value, recurring measurements | Other debt securities |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
502,559
|
403,886
|
| Fair value, recurring measurements | Other debt securities | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
673,680
|
539,445
|
| Fair value, recurring measurements | Other debt securities | Level 1 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
0
|
0
|
| Fair value, recurring measurements | Other debt securities | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Other debt securities | Level 2 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
452,687
|
337,219
|
| Fair value, recurring measurements | Other debt securities | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
61,578
|
2,599
|
| Fair value, recurring measurements | Other debt securities | Level 3 |
|
|
| Assets |
|
|
| Available-for-sale debt securities |
49,872
|
66,667
|
| Fair value, recurring measurements | Other debt securities | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
612,102
|
536,846
|
| Fair value, recurring measurements | Commercial paper | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
1,224,538
|
1,609,441
|
| Fair value, recurring measurements | Commercial paper | Level 1 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Commercial paper | Level 2 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
1,224,538
|
1,609,441
|
| Fair value, recurring measurements | Commercial paper | Level 3 | Debt securities |
|
|
| Assets |
|
|
| Trading account assets: |
0
|
0
|
| Fair value, recurring measurements | Interest rate contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
14,895,681
|
9,505,212
|
| Liabilities |
|
|
| Trading derivative liabilities |
16,070,936
|
10,696,351
|
| Fair value, recurring measurements | Interest rate contracts | Level 1 |
|
|
| Assets |
|
|
| Trading derivative assets |
12,565
|
14,143
|
| Liabilities |
|
|
| Trading derivative liabilities |
28,532
|
30,997
|
| Fair value, recurring measurements | Interest rate contracts | Level 2 |
|
|
| Assets |
|
|
| Trading derivative assets |
14,860,818
|
9,381,056
|
| Liabilities |
|
|
| Trading derivative liabilities |
15,998,172
|
10,594,827
|
| Fair value, recurring measurements | Interest rate contracts | Level 3 |
|
|
| Assets |
|
|
| Trading derivative assets |
22,298
|
110,013
|
| Liabilities |
|
|
| Trading derivative liabilities |
44,232
|
70,527
|
| Fair value, recurring measurements | Foreign exchange contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
5,620,801
|
5,646,664
|
| Liabilities |
|
|
| Trading derivative liabilities |
4,904,908
|
5,535,644
|
| Fair value, recurring measurements | Foreign exchange contracts | Level 1 |
|
|
| Assets |
|
|
| Trading derivative assets |
1,416
|
10,473
|
| Liabilities |
|
|
| Trading derivative liabilities |
2,197
|
954
|
| Fair value, recurring measurements | Foreign exchange contracts | Level 2 |
|
|
| Assets |
|
|
| Trading derivative assets |
5,592,040
|
5,623,544
|
| Liabilities |
|
|
| Trading derivative liabilities |
4,900,685
|
5,532,241
|
| Fair value, recurring measurements | Foreign exchange contracts | Level 3 |
|
|
| Assets |
|
|
| Trading derivative assets |
27,345
|
12,647
|
| Liabilities |
|
|
| Trading derivative liabilities |
2,026
|
2,449
|
| Fair value, recurring measurements | Equity contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
145,997
|
122,971
|
| Liabilities |
|
|
| Trading derivative liabilities |
61,630
|
158,342
|
| Fair value, recurring measurements | Equity contracts | Level 1 |
|
|
| Assets |
|
|
| Trading derivative assets |
44,748
|
65,718
|
| Liabilities |
|
|
| Trading derivative liabilities |
17,805
|
85,616
|
| Fair value, recurring measurements | Equity contracts | Level 2 |
|
|
| Assets |
|
|
| Trading derivative assets |
94,288
|
48,606
|
| Liabilities |
|
|
| Trading derivative liabilities |
43,467
|
72,337
|
| Fair value, recurring measurements | Equity contracts | Level 3 |
|
|
| Assets |
|
|
| Trading derivative assets |
6,961
|
8,647
|
| Liabilities |
|
|
| Trading derivative liabilities |
358
|
389
|
| Fair value, recurring measurements | Commodity contracts |
|
|
| Assets |
|
|
| Trading derivative assets |
20,185
|
18,673
|
| Liabilities |
|
|
| Trading derivative liabilities |
19,927
|
18,327
|
| Fair value, recurring measurements | Commodity contracts | Level 1 |
|
|
| Assets |
|
|
| Trading derivative assets |
0
|
0
|
| Liabilities |
|
|
| Trading derivative liabilities |
0
|
0
|
| Fair value, recurring measurements | Commodity contracts | Level 2 |
|
|
| Assets |
|
|
| Trading derivative assets |
293
|
391
|
| Liabilities |
|
|
| Trading derivative liabilities |
1
|
0
|
| Fair value, recurring measurements | Commodity contracts | Level 3 |
|
|
| Assets |
|
|
| Trading derivative assets |
19,892
|
18,282
|
| Liabilities |
|
|
| Trading derivative liabilities |
19,926
|
18,327
|
| Fair value, recurring measurements | Credit derivatives |
|
|
| Assets |
|
|
| Trading derivative assets |
50,618
|
47,195
|
| Liabilities |
|
|
| Trading derivative liabilities |
53,351
|
62,487
|
| Fair value, recurring measurements | Credit derivatives | Level 1 |
|
|
| Assets |
|
|
| Trading derivative assets |
0
|
0
|
| Liabilities |
|
|
| Trading derivative liabilities |
0
|
0
|
| Fair value, recurring measurements | Credit derivatives | Level 2 |
|
|
| Assets |
|
|
| Trading derivative assets |
49,861
|
46,047
|
| Liabilities |
|
|
| Trading derivative liabilities |
52,921
|
61,999
|
| Fair value, recurring measurements | Credit derivatives | Level 3 |
|
|
| Assets |
|
|
| Trading derivative assets |
757
|
1,148
|
| Liabilities |
|
|
| Trading derivative liabilities |
430
|
488
|
| Fair value, recurring measurements | Other |
|
|
| Assets |
|
|
| Trading derivative assets |
645
|
509
|
| Liabilities |
|
|
| Trading derivative liabilities |
55
|
158
|
| Fair value, recurring measurements | Other | Level 1 |
|
|
| Assets |
|
|
| Trading derivative assets |
0
|
0
|
| Liabilities |
|
|
| Trading derivative liabilities |
0
|
0
|
| Fair value, recurring measurements | Other | Level 2 |
|
|
| Assets |
|
|
| Trading derivative assets |
1
|
4
|
| Liabilities |
|
|
| Trading derivative liabilities |
0
|
2
|
| Fair value, recurring measurements | Other | Level 3 |
|
|
| Assets |
|
|
| Trading derivative assets |
644
|
505
|
| Liabilities |
|
|
| Trading derivative liabilities |
55
|
156
|
| Fair value, recurring measurements | Marketable equity securities |
|
|
| Assets |
|
|
| Equity securities |
3,831,988
|
5,470,806
|
| Fair value, recurring measurements | Marketable equity securities | Level 1 |
|
|
| Assets |
|
|
| Equity securities |
3,779,986
|
5,400,634
|
| Fair value, recurring measurements | Marketable equity securities | Level 2 |
|
|
| Assets |
|
|
| Equity securities |
52,002
|
70,172
|
| Fair value, recurring measurements | Marketable equity securities | Level 3 |
|
|
| Assets |
|
|
| Equity securities |
0
|
0
|
| Fair value, recurring measurements | Nonmarketable equity securities |
|
|
| Assets |
|
|
| Equity securities |
100,762
|
87,814
|
| Fair value, recurring measurements | Nonmarketable equity securities | Real estate funds |
|
|
| Liabilities |
|
|
| Investment securities valued at net asset value |
37,207
|
40,477
|
| Unfunded commitments |
0
|
869
|
| Fair value, recurring measurements | Nonmarketable equity securities | Private equity and other funds |
|
|
| Liabilities |
|
|
| Investment securities valued at net asset value |
53,324
|
56,334
|
| Unfunded commitments |
13,650
|
250
|
| Fair value, recurring measurements | Nonmarketable equity securities | Level 1 |
|
|
| Assets |
|
|
| Equity securities |
0
|
0
|
| Fair value, recurring measurements | Nonmarketable equity securities | Level 2 |
|
|
| Assets |
|
|
| Equity securities |
0
|
0
|
| Fair value, recurring measurements | Nonmarketable equity securities | Level 3 |
|
|
| Assets |
|
|
| Equity securities |
¥ 100,762
|
¥ 87,814
|