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Subsequent Events	12 Months Ended
Subsequent Events	Jun. 30, 2012
Subsequent Events [Abstract]
Subsequent Events	(21) Subsequent Events On August 2, 2012, our board of directors declared a quarterly dividend of $0.17 per share, which will have a record date of September 7, 2012, and be payable on September 28, 2012. We plan to pay the dividend in US currency to holders of our common stock trading on the New York Stock Exchange (NYSE). Holders of Chess Depositary Instruments (CDIs) trading on the Australian Stock Exchange will receive an equivalent amount in Australian currency, based on the exchange rate on the record date, and reflecting the 10:1 ratio between CDIs and NYSE shares. We expect the dividend will be unfranked for Australian tax purposes.