CONSOLIDATED BALANCE SHEET (Parentheticals) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Held-to-maturity securities, fair value	$ 15,371	$ 13,123
Allowance for loan losses	$ 322	$ 353
Shareholders’ equity:
Common stock par value	$ 0.01	$ 0.01
Common stock shares authorized (in shares)	400,000,000	400,000,000
Common stock shares issued (in shares)	279,526,976	291,335,241
Common stock shares outstanding (in shares)	279,526,976	291,335,241