CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Unaudited (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Other Comprehensive Income
Net income (loss)	$ 439	$ 591	$ 757	$ 1,003
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Unrealized holding gains (losses) on available-for-sale securities arising during period	188	(211)	301	(247)
Reclassification adjustment for net (gains) losses included in net income	(9)	33	(12)	38
Unrealized holding gains (losses) on cash flow hedge derivatives arising during period	12	(2)	22	(1)
Reclassification adjustment for net gains on cash flow hedge derivatives included in net income	(6)	(6)	(13)	(20)
Reclassification of amounts to net periodic benefit costs	1	2	2	4
Other comprehensive income (loss), Net of Tax	186	(184)	300	(226)
Comprehensive income	625	407	1,057	777
Comprehensive income attributable to noncontrolling interests			1	(10)
Comprehensive income attributable to Bancorp	$ 625	$ 407	$ 1,056	$ 787