Comprehensive Income (Schedule Of Comprehensive Income (Loss)) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Comprehensive Income [Abstract]
Net income	$ 227,119	$ 203,699	$ 643,491	$ 527,374
Foreign currency translation adjustments	(18,137)	15,828	(892)	1,954
Change in unrealized gain (loss) on cash flow hedges, net of taxes of $(28,599) and $1,581 for the three months ended, and $(16,200) and $481 for the nine months ended, respectively	(108,781)	30,050	(86,197)	1,597
Change in unrealized gain on available-for-sale securities, net of taxes of $(288) and $625 for the three months ended, and $596 and $1,290 for the nine months ended, respectively	(400)	911	810	1,881
Total comprehensive income	99,801	250,488	557,212	532,806
Tax on unrealized gain (loss) on cash flow hedges	(28,599)	1,581	(16,200)	481
Available-for-sale securities, income tax expense on change in unrealized holding gain or loss	$ (288)	$ 625	$ 596	$ 1,290