Debt (Tables)

6 Months Ended

Dec. 31, 2011

Debt [Abstract]

Schedule Of Principal Amounts, Unamortized Discount And Net Carrying Amounts Of Liability Components And Equity Components For Convertible Senior Notes

	Principal Balance		Unamortized Discount			Net Carrying Amount		Equity Component
December 31, 2011	$	400,000	$	(13,227	)	$	386,773	$	48,323
June 30, 2011	$	400,000	$	(21,599	)	$	378,401	$	48,323