Deposit Accounts - Summary of Deposit Accounts (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deposits
Total deposits	$ 19,973	$ 15,146
Branch retail deposits
Deposits
Savings accounts	3,437	3,030
Demand deposit accounts	1,726	1,318
Certificates of deposit/CDARS	1,355	2,353
Money market demand accounts	490	495
Total deposits	7,008	7,196
Commercial deposits
Deposits
Savings accounts	461	342
Demand deposit accounts	2,294	1,438
Money market demand accounts	208	188
Total deposits	2,963	1,968
Retail deposits
Deposits
Total deposits	9,971	9,164
Government deposits
Deposits
Savings accounts	778	495
Demand deposit accounts	529	360
Certificates of deposit/CDARS	458	358
Total deposits	1,765	1,213
Wholesale deposits
Deposits
Total deposits	1,031	633
Custodial deposits
Deposits
Total deposits	$ 7,206	$ 4,136

The schedule of a description of the entity's deposit liabilities held by the entity.

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- Definition

The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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- Definition

Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

+ References

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

+ References

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- Definition

Amount of time deposit liabilities, including certificates of deposit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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