Commitments, Contingencies and Guarantees - Commitments (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Commitment Liabilities [Line Items]
Total commitments	$ 497,119	$ 447,126
2026	260,978
2027-2028	86,695
2029-2030	121,329
2031-Thereafter	28,117
Total lending
Commitment Liabilities [Line Items]
Total commitments	323,177	283,442
2026	99,805
2027-2028	83,135
2029-2030	115,011
2031-Thereafter	25,226
Investment-Grade
Commitment Liabilities [Line Items]
Total commitments	154,598	124,001
2026	21,573
2027-2028	51,812
2029-2030	75,375
2031-Thereafter	5,838
Non-Investment- Grade
Commitment Liabilities [Line Items]
Total commitments	81,407	67,755
2026	5,884
2027-2028	22,835
2029-2030	34,679
2031-Thereafter	18,009
Warehouse financing
Commitment Liabilities [Line Items]
Total commitments	16,349	13,587
2026	1,525
2027-2028	8,488
2029-2030	4,957
2031-Thereafter	1,379
Credit cards
Commitment Liabilities [Line Items]
Total commitments	70,823	78,099
2026	70,823
2027-2028	0
2029-2030	0
2031-Thereafter	0
Risk participations
Commitment Liabilities [Line Items]
Total commitments	8,435	5,014
2026	360
2027-2028	1,856
2029-2030	6,139
2031-Thereafter	80
Collateralized agreement
Commitment Liabilities [Line Items]
Total commitments	103,188	95,282
2026	102,682
2027-2028	506
2029-2030	0
2031-Thereafter	0
Collateralized financing
Commitment Liabilities [Line Items]
Total commitments	43,206	49,333
2026	43,104
2027-2028	102
2029-2030	0
2031-Thereafter	0
Investment
Commitment Liabilities [Line Items]
Total commitments	9,721	5,832
2026	5,964
2027-2028	768
2029-2030	179
2031-Thereafter	2,810
Other
Commitment Liabilities [Line Items]
Total commitments	9,392	$ 8,223
2026	9,063
2027-2028	328
2029-2030	0
2031-Thereafter	$ 1

Commitment Liabilities [Line Items]

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

+ Details

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- Definition

Amount of commitment classified as other to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of commitment classified as other to be paid in fourth and fifth fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of commitment classified as other to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of commitment classified as other to be paid in second and third fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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