Shareholders' Equity (Schedule Of Accumulated Other Comprehensive (Loss) Income) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Stockholders' Equity Note [Abstract]
Net unrealized gains on cash flow hedges	$ 154	$ 161
Net unrealized gains (losses) on available-for-sale securities portfolio	194	(56)
Net unrealized losses related to reclassified available-for-sale securities	(61)	(72)
Net unrealized gains (losses) on available-for-sale securities	133	(128)
Net unrealized losses on available-for-sale securities designated in fair value hedges	(107)	(97)
Other-than-temporary impairment on available-for-sale securities related to factors other than credit	2	4
Net unrealized losses on hedges of net investments in non-U.S. subsidiaries	(14)	(14)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit	(39)	(47)
Net unrealized losses on retirement plans	(197)	(203)
Foreign currency translation	256	229
Total	$ 188	$ (95)