Securities Financing Activities (Details) - USD ($) $ in Millions		Jun. 30, 2025	Dec. 31, 2024
Offsetting Liabilities [Line Items]
Short-term Debt		$ 16,631	$ 29,205
Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, before Offset	[1]	1,171	1,322
Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset	[2]	1,166	1,313
Securities Sold under Agreements to Repurchase
Offsetting Liabilities [Line Items]
Short-term Debt		3,657	9,675
Securities Sold under Agreements to Repurchase | U.S. Treasury
Offsetting Liabilities [Line Items]
Short-term Debt		232	2,745
Securities Sold under Agreements to Repurchase | State and Municipal
Offsetting Liabilities [Line Items]
Short-term Debt		297	450
Securities Sold under Agreements to Repurchase | Agency MBS – residential
Offsetting Liabilities [Line Items]
Short-term Debt		2,500	5,750
Securities Sold under Agreements to Repurchase | Corporate and other debt securities
Offsetting Liabilities [Line Items]
Short-term Debt		628	730
Securities Sold under Agreements to Repurchase | Overnight and Continuous
Offsetting Liabilities [Line Items]
Short-term Debt		932	800
Securities Sold under Agreements to Repurchase | Overnight and Continuous | U.S. Treasury
Offsetting Liabilities [Line Items]
Short-term Debt		232	0
Securities Sold under Agreements to Repurchase | Overnight and Continuous | State and Municipal
Offsetting Liabilities [Line Items]
Short-term Debt		291	350
Securities Sold under Agreements to Repurchase | Overnight and Continuous | Agency MBS – residential
Offsetting Liabilities [Line Items]
Short-term Debt		0	0
Securities Sold under Agreements to Repurchase | Overnight and Continuous | Corporate and other debt securities
Offsetting Liabilities [Line Items]
Short-term Debt		409	450
Securities Sold under Agreements to Repurchase | Up to 30 days
Offsetting Liabilities [Line Items]
Short-term Debt		2,725	8,575
Securities Sold under Agreements to Repurchase | Up to 30 days | U.S. Treasury
Offsetting Liabilities [Line Items]
Short-term Debt		0	2,445
Securities Sold under Agreements to Repurchase | Up to 30 days | State and Municipal
Offsetting Liabilities [Line Items]
Short-term Debt		6	100
Securities Sold under Agreements to Repurchase | Up to 30 days | Agency MBS – residential
Offsetting Liabilities [Line Items]
Short-term Debt		2,500	5,750
Securities Sold under Agreements to Repurchase | Up to 30 days | Corporate and other debt securities
Offsetting Liabilities [Line Items]
Short-term Debt		$ 219	280
Securities Sold under Agreements to Repurchase | 30-90 days
Offsetting Liabilities [Line Items]
Short-term Debt			300
Securities Sold under Agreements to Repurchase | 30-90 days | U.S. Treasury
Offsetting Liabilities [Line Items]
Short-term Debt			300
Securities Sold under Agreements to Repurchase | 30-90 days | State and Municipal
Offsetting Liabilities [Line Items]
Short-term Debt			0
Securities Sold under Agreements to Repurchase | 30-90 days | Agency MBS – residential
Offsetting Liabilities [Line Items]
Short-term Debt			0
Securities Sold under Agreements to Repurchase | 30-90 days | Corporate and other debt securities
Offsetting Liabilities [Line Items]
Short-term Debt			$ 0

[1] There were no securities financing transactions subject to legally enforceable master netting arrangements that were eligible for balance sheet netting for the periods presented.

[2] The fair value of received/pledged financial instruments is limited to the carrying amount of the associated asset or liability. The fair value of collateral received that was permitted to be resold or repledged was $2.6 billion as of June 30, 2025 and $2.5 billion as of December 31, 2024. Of the fair value of collateral permitted to be resold or repledged, the fair value of securities repledged or resold was $2.2 billion as of June 30, 2025 and $1.6 billion as of December 31, 2024.