Time Deposits (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Banking and Thrift, Other Disclosure [Abstract]
Time deposits certificates over $250,000	$ 1,220	$ 1,550
Interest-bearing domestic deposit, brokered	$ 1,840	$ 3,300

Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Name:	us-gaap_InterestBearingDomesticDepositBrokered
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant