CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Unaudited - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Comprehensive Income
Net income (loss)	$ 309	$ 439	$ 670	$ 757
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Unrealized holding gains (losses) on available-for-sale securities arising during period	(285)	188	(144)	301
Reclassification adjustment for net (gains) losses included in net income	4	(9)	(4)	(12)
Unrealized holding gains (losses) on cash flow hedge derivatives arising during period	(5)	12	29	22
Reclassification adjustment for net gains on cash flow hedge derivatives included in net income	(13)	(6)	(23)	(13)
Reclassification of amounts to net periodic benefit costs	2	1	4	2
Other comprehensive income (loss)	(297)	186	(138)	300
Comprehensive income	12	625	532	1,057
Comprehensive income attributable to noncontrolling interests	(6)		(6)	1
Comprehensive income attributable to Bancorp	$ 18	$ 625	$ 538	$ 1,056