Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 441.2	$ 382.9
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	19.5	(40.8)
Change in unrealized gains and losses on cash flow hedges, net of taxes	19.7	42.2
Change in unrealized gains and losses on available-for-sale securities, net of taxes	5.4	2.4
Other comprehensive income (loss)	44.6	3.8
Comprehensive income	$ 485.8	$ 386.7