Segment Information (Details) (USD $) In Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Sep. 30, 2009	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Revenue:
Revenue	$ 208,791	$ 203,667	$ 234,064	$ 170,487	$ 164,303	$ 166,029	$ 194,612	$ 145,091	$ 817,009	$ 670,035	$ 515,826
Income from Operations:
Income from operations									93,080	76,848	61,582
North America [Member]
Revenue:
Revenue									452,770	384,034	319,954
Income from Operations:
Income from operations									132,299	103,639
Europe [Member]
Revenue:
Revenue									321,716	258,534	180,714
Income from Operations:
Income from operations									91,959	72,464
Asia-Pacific [Member]
Revenue:
Revenue									42,523	27,467	15,158
Income from Operations:
Income from operations									7,641	8,898
Corporate and global functions [Member]
Income from Operations:
Income from operations									$ (138,819)	$ (108,153)