UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Net income	$ 437,440		$ 352,654		$ 681,732		$ 534,470
Other comprehensive income, net of tax
Foreign currency translation adjustments (1)	14,787	[1]	(60,107)	[1]	(61,819)	[1]	(18,652)	[1]
Unrealized loss on marketable securities (2)	(540)	[2]	(14)	[2]	(501)	[2]	(788)	[2]
Comprehensive income	451,687		292,533		619,412		515,030
Less: Comprehensive income (loss) attributable to noncontrolling interests (See Note 11)	1,883		(3,279)		(10,279)		778
Comprehensive income attributable to common stockholders	$ 449,804		$ 295,812		$ 629,691		$ 514,252

[1] Net of tax benefit of $12,613 and tax of $14,284 for the three and six months ended June 30, 2013, respectively, and net of tax of $23,697 and $10,735 for the three and six months ended June 30, 2012, respectively, associated with hedges of foreign denominated net assets. See Note 12.

[2] Net of tax benefit of $258 and $251 for the three and six months ended June 30, 2013, respectively, and net of tax of $7 and tax benefit of $345 for the three and six months ended June 30, 2012, respectively.