CONSOLIDATED BALANCE SHEET (UNAUDITED) (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Assets pledged to creditors, trading assets	[1]	$ 1,115	$ 1,265
Securities available-for-sale, amortized cost		34,461	39,636
Securities available-for-sale, allowance for credit losses	[2]	1	1
Securities held-to-maturity, allowance for credit losses	[2]	2	2
Securities held-to-maturity, fair value		8,166	9,369
Other assets, allowance for credit losses	[3]	$ 2	$ 2
Preferred stock, par value (usd per share)		$ 0	$ 0
Preferred stock, shares authorized (shares)		40,999,000	40,999,000
Preferred stock, shares issued (shares)		1,265	1,265
Preferred stock, shares outstanding (shares)		1,265	1,265
Common stock, par value (usd per share)		$ 5	$ 5
Common stock, shares authorized (shares)		150,000,000	150,000,000
Common stock, shares issued (shares)		714	714
Common stock, shares outstanding (shares)		714	714
Assets:
Loans		$ 61,526	$ 62,088
Other Assets		6,109	6,084
Total assets	[4]	194,856	196,434
Liabilities:
Interest, taxes and other liabilities		2,559	2,665
Total liabilities	[4]	176,882	178,143
Student Loan [Member]
Loans, designated under fair value option		30	32
Loans Held For Sale [Member]
Loans Held-for-sale, designated under fair value option		83	36
Deposits [Member]
Deposits designated under fair value option		3,800	4,200
Long-term debt [Member]
Long-term debt designated under fair value option		9,900	10,700
Trading assets [Member]
Assets pledged to creditors, trading assets		1,115	1,265
Securities available-for-sale [Member]
Assets pledged to creditors, securities-available-for-sale		2,821	2,077
Variable interest entities [Member]
Assets:
Loans		8	10
Other Assets		75	79
Total assets		83	89
Liabilities:
Interest, taxes and other liabilities		5	10
Total liabilities		$ 5	$ 10

[1] Trading assets are primarily pledged against liabilities associated with repurchase agreements.

[2] See Note 4, "Securities," for additional information regarding the allowance for credit losses associated with our security portfolios.

[3] Primarily includes accrued interest receivables and customer acceptances.

[4] Assets