CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Unaudited (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income (loss)	$ 385	$ 337	$ 816	$ 602
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Unrealized holding gains (losses) on available-for-sale securities arising during period	(10)	125	(3)	88
Reclassification adjustment for net gains included in net income	(2)	(4)	(6)	(11)
Unrealized holding gains on cash flow hedge derivatives arising during period	10	21	16	21
Reclassification adjustment for net gains on cash flow hedge derivatives included in net income	(14)	(11)	(27)	(20)
Net actuarial loss	2	2	4	4
Other comprehensive loss	(14)	133	(16)	82
Comprehensive income	371	470	800	684
Comprehensive income attributable to noncontrolling interests			1
Comprehensive income attributable to Bancorp	$ 371	$ 470	$ 799	$ 684