Income Taxes - Additional information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Net provisional discrete income tax cost resulting from TCJ Act	$ 233,000
Decrease in income tax expense for one-time revaluation of certain tax-related assets and liabilities as a result of TCJ Act	80,000
Transition tax on previously unremitted foreign earnings	297,000
Deferred tax assets resulting from loss carryforwards	679,880	$ 678,486
Loss carryforwards	2,633,218
Valuation allowance related to the loss carryforwards	675,045
Amount of valuation allowance relating to non-operating entity whose loss carryforward utilization is considered to be remote	$ 640,239
Operating loss carryforward minimum period before expiration (in years)	3 years
Operating loss carryforward maximum period before expiration (in years)	20 years
Valuation allowance related to future deductible items	$ 19,812
Undistributed foreign earnings not permanently reinvested	274,000
Deferred tax liability on undistributed foreign earnings not permanently reinvested	12,000
Undistributed distributed foreign earnings	2,700,000
Deferred tax liability on undistributed foreign earnings	4,000
Amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	153,091	95,460	$ 80,722
Accrued interest related to the gross unrecognized tax benefits excluded from the unrecognized tax benefits	21,737	$ 15,432	$ 12,357
Amount of gross unrecognized tax benefits could be reduced by as a result of the revaluation of existing uncertain tax positions	$ 120,000