Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified		3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jul. 22, 2011	Dec. 31, 2011 Fair Value, Inputs, Level 1 [Member]	Jun. 30, 2011 Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2011 Fair Value, Inputs, Level 2 [Member]	Jun. 30, 2011 Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2011 Fair Value, Inputs, Level 3 [Member]	Jun. 30, 2011 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2011 Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2011 Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2011 Equity Method Investments [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Equity Method Investments [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2011 Equity Method Investments [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Equity Method Investments [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2011 Goodwill [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Goodwill [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2011 Goodwill [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Goodwill [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2011 Long-Lived Assets [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Long-Lived Assets [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2011 Long-Lived Assets [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]	Dec. 31, 2010 Long-Lived Assets [Member] Fair Value, Assets And Liabilities Measured On Nonrecurring Basis, Gains (Losses) [Member]
Fair Value Measurements [Line Items]
Short-term investments		$ 223,836	$ 317,322	$ 0	$ 0	$ 0	$ 0
Money market funds		35,928	17,492	0	0	0	0
Available-for-sale securities		1,730	1,869	0	0	0	0
Foreign exchange contracts		0	0	35,204	(34,924)	0	0
Interest rate swap		0	0	(1,179)	(1,179)	0	0
Contingent consideration	(22,100)	0	0	0	0	(22,100)	0
Net asset (liability)		261,494	336,683	34,025	(36,103)	(22,100)	0
Equity method investments		0	0	0	0	0	0
Goodwill		0	0	0	0	184,928	119,357
Long-lived assets		0	0	0	0	468,165	448,840
Total		0	0	0	0	653,093	568,197
Total losses recorded during the period presented								$ 0	$ (1,507)	$ 0	$ (1,834)	$ 0	$ (1,507)	$ 0	$ (1,834)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0