Income Taxes - Effective Income Tax Rate Reconciliation (Detail) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Income Taxes Disclosure [Line Items]
U.S. federal income tax rate	21.00%	21.00%	21.00%
State and local taxes, net	2.00%	1.00%	2.00%
Effect of foreign operations	12.00%	(2.00%)	9.00%
Change in valuation allowance (b)	(16.00%)	0.00%	0.00%
Non-deductible goodwill and asset impairments	1.00%	(22.00%)	5.00%
Non-deductible compensation and benefits	4.00%	0.00%	1.00%
Remeasurement of deferred tax assets	(7.00%)	0.00%	0.00%
R&D credits	(2.00%)	1.00%	(2.00%)
Other, net	(1.00%)	0.00%	0.00%
Effective tax rate	14.00%	(1.00%)	36.00%
Non-cash impairment charge	$ 0	$ 1,690	$ 96
Non-cash impairment of goodwill	0	1,098
Domestic Tax Authority [Member]
Income Taxes Disclosure [Line Items]
Non-deductible compensation and benefits	64
State and Local Jurisdiction [Member]
Income Taxes Disclosure [Line Items]
Non-deductible compensation and benefits	5
Foreign Tax Authority
Income Taxes Disclosure [Line Items]
Non-deductible compensation and benefits	$ 6
Australian Subsidiaries
Income Taxes Disclosure [Line Items]
Non-cash impairment of goodwill			96
Goodwill \| Australian Subsidiaries
Income Taxes Disclosure [Line Items]
Non-deductible goodwill, asset and investment impairment		$ 262	$ 10

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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