CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 182.7	$ 189.9	$ 356.7	$ 410.6
Other comprehensive income (loss):
Foreign currency translation adjustment	(53.9)	48.5	(55.9)	(11.6)
Change in net realized and unrealized gain (loss) on derivative securities, net of tax	0.3	(0.7)	(0.8)	2.0
Change in net unrealized gain (loss) on investment securities, net of tax	(14.0)	47.9	(24.8)	56.6
Other comprehensive income (loss)	(67.6)	95.7	(81.5)	47.0
Comprehensive income	115.1	285.6	275.2	457.6
Comprehensive income (non-controlling interests)	(57.3)	(44.4)	(121.4)	(151.2)
Comprehensive income (controlling interest)	$ 57.8	$ 241.2	$ 153.8	$ 306.4