CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
ASSETS:
Securities held-to-maturity, fair value	$ 5,297	$ 5,193
Derivative assets	625	629
Other assets	2,841	2,384
LIABILITIES:
Interest-bearing deposits	74,890	69,621
Derivative liabilities	485	612
Long-term borrowed funds	9,886	4,642
Other liabilities	$ 1,490	$ 1,606
STOCKHOLDERS’ EQUITY:
Preferred stock, par value (in dollars per share)	$ 25.00	$ 25.00
Preferred stock, authorized (in shares)	100,000,000	100,000,000
Preferred stock, issued (in shares)		0
Preferred stock, outstanding (in shares)	250,000	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, issued (in shares)	563,117,415	560,262,638
Common stock, outstanding (in shares)	527,774,428	545,884,519
Treasury stock (in shares)	35,342,987	14,378,119
Related Party
ASSETS:
Derivative assets	$ 52	$ 1
Other assets	7	7
LIABILITIES:
Interest-bearing deposits	2	5
Derivative liabilities	212	387
Long-term borrowed funds	1,250	2,000
Other liabilities	$ 15	$ 30
Series A Preferred Stock
STOCKHOLDERS’ EQUITY:
Preferred stock, par value (in dollars per share)	$ 25.00	$ 0
Preferred stock, authorized (in shares)	250,000	0
Preferred stock, issued (in shares)	250,000	0
Preferred stock, outstanding (in shares)	250,000	0
Preferred stock, liquidation preference (in dollars per share)	$ 1,000	$ 0
Available-for-sale Securities
ASSETS:
Securities, pledged as collateral	$ 4,283	$ 7,181
Held-to-maturity Securities
ASSETS:
Securities, pledged as collateral	$ 135	$ 40