Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Tax Contingency [Line Items]
Deferred tax asset	$ 2,446,000,000	$ 2,212,000,000
Unrecognized tax benefits	69,000,000	63,000,000	$ 58,000,000	$ 62,000,000
Valuation allowance recorded	1,765,000,000	1,546,000,000
Interest and penalties	1,000,000	0	1,000,000
Interest and penalty accrual	4,000,000	3,000,000	3,000,000
Amount that affect effective income tax rate	44,000,000
Undistributed earnings of foreign subsidiaries, indefinitely reinvested	2,900,000,000
Gross income tax paid	176,000,000	99,000,000	144,000,000
Income tax refunds	14,000,000	25,000,000	$ 18,000,000
Maximum
Income Tax Contingency [Line Items]
Amount of uncertain tax liabilities	35,000,000
Minimum
Income Tax Contingency [Line Items]
Amount of uncertain tax liabilities	0
Foreign Tax Authority
Income Tax Contingency [Line Items]
Capital loss carryforwards	31,000,000
U.S. Federal
Income Tax Contingency [Line Items]
Capital loss carryforwards	72,000,000
U.S. States
Income Tax Contingency [Line Items]
Capital loss carryforwards	12,000,000
Remeasurement of deferred tax assets	5,000,000
State and Foreign Country Jurisdiction
Income Tax Contingency [Line Items]
Valuation allowance recorded	58,000,000
Net Operating Loss Carryforwards
Income Tax Contingency [Line Items]
Deferred tax asset	484,000,000	578,000,000
Unrecognized tax benefits	62,000,000	53,000,000
Valuation allowance recorded	206,000,000	269,000,000
Net Operating Loss Carryforwards | U.S. Federal
Income Tax Contingency [Line Items]
Remeasurement of deferred tax assets	64,000,000
Capital Loss Carryforward
Income Tax Contingency [Line Items]
Deferred tax asset	1,126,000,000	886,000,000
Valuation allowance recorded	1,126,000,000	$ 886,000,000
Capital loss carryforwards	15,000,000
Capital Loss Carryforward | Australia
Income Tax Contingency [Line Items]
Capital loss carryforwards	2,300,000,000
Capital Loss Carryforward | U.K.
Income Tax Contingency [Line Items]
Capital loss carryforwards	1,700,000,000
Research Tax Credit Carryforward | U.S. Federal
Income Tax Contingency [Line Items]
Research and development credits	40,000,000
Foreign Tax Credits | U.S. Federal
Income Tax Contingency [Line Items]
Foreign tax credits	$ 32,000,000