Condensed Consolidated Statements Of Comprehensive Income (Parentheticals) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Tax effect on unrealized gains (losses) on available-for-sale securities	$ (4)	$ 2	$ 0	$ 2
Tax effect on unrealized gains (losses) on effective foreign currency forward contracts	0	0	0	0
Tax effect on reclassification of (gains) realized on foreign currency forward contracts	$ 0	$ 0	$ 0	$ 0