Income Taxes - Additional Information (Detail) - USD ($)		12 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Tax Contingency [Line Items]
U.S. statutory federal tax rate	[1]		28.00%	35.00%	35.00%
Income tax expense, net	[2]		$ 355,000,000	$ 28,000,000	$ (54,000,000)
Deferred tax asset			1,726,000,000	1,911,000,000
Unrecognized tax benefits			62,000,000	64,000,000	86,000,000	$ 129,000,000
Valuation allowance recorded			1,385,000,000	1,187,000,000
Interest and penalties			1,000,000	11,000,000	1,000,000
Interest and penalty accrual			3,000,000	3,000,000	6,000,000
Foreign tax authority settlement, net income tax expense (benefit)			49,000,000	63,000,000
Current foreign tax expense			107,000,000	118,000,000	102,000,000
Deferred foreign tax expense			(24,000,000)	(151,000,000)	1,000,000
Amount that affect effective income tax rate			35,000,000
Undistributed earnings of foreign subsidiaries, indefinitely reinvested			2,600,000,000
Gross income tax paid			160,000,000	132,000,000	103,000,000
Income tax refunds			7,000,000	9,000,000	10,000,000
Net Operating Loss Carryforwards [Member]
Income Tax Contingency [Line Items]
Deferred tax asset			348,000,000	473,000,000
Unrecognized tax benefits			45,000,000	46,000,000
Valuation allowance recorded			195,000,000	149,000,000
Capital Loss Carryforward [Member]
Income Tax Contingency [Line Items]
Deferred tax asset			889,000,000	904,000,000
Valuation allowance recorded			889,000,000	904,000,000
Capital Loss Carryforward [Member] | Australia [Member]
Income Tax Contingency [Line Items]
Capital loss carryforwards			2,000,000,000
Capital Loss Carryforward [Member] | U.K. [Member]
Income Tax Contingency [Line Items]
Capital loss carryforwards			1,700,000,000
Minimum [Member]
Income Tax Contingency [Line Items]
Amount of uncertain tax liabilities			0
Maximum [Member]
Income Tax Contingency [Line Items]
Amount of uncertain tax liabilities			18,000,000
Scenario, Plan [Member]
Income Tax Contingency [Line Items]
U.S. statutory federal tax rate		21.00%
U.S. Tax Cuts and Jobs Act [Member]
Income Tax Contingency [Line Items]
Income tax expense, net			237,000,000
Current Income Tax Expense [Member]
Income Tax Contingency [Line Items]
Foreign tax authority settlement, net income tax expense (benefit)			2,000,000
Deferred Income Taxes [Member]
Income Tax Contingency [Line Items]
Foreign tax authority settlement, net income tax expense (benefit)			47,000,000
Settlement with Taxing Authority [Member]
Income Tax Contingency [Line Items]
Current foreign tax expense				20,000,000
Deferred foreign tax expense				43,000,000
U.S. Federal [Member]
Income Tax Contingency [Line Items]
Capital loss carryforwards			36,000,000
U.S. Federal [Member] | SEC Schedule, 12-09, Valuation Allowance, Operating Loss Carryforward [Member]
Income Tax Contingency [Line Items]
Change in valuation allowance tax benefit					$ 106,000,000
U.S. Federal [Member] | Foreign Tax Credits [Member]
Income Tax Contingency [Line Items]
Foreign tax credits			$ 24,000,000
Capital loss carryforwards, expiration date			Jun. 30, 2025
U.S. Federal [Member] | Research Tax Credit Carryforward [Member]
Income Tax Contingency [Line Items]
Research and development credits			$ 9,000,000
Capital loss carryforwards, expiration date			Jun. 30, 2036
U.S. Federal [Member] | Alternative Minimum Tax Credits [Member]
Income Tax Contingency [Line Items]
Alternative minimum tax credits			$ 3,000,000
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Capital loss carryforwards			$ 19,000,000
Capital loss carryforwards, expiration date			Jun. 30, 2025
Foreign Tax Authority [Member] | SEC Schedule, 12-09, Valuation Allowance, Operating Loss Carryforward [Member]
Income Tax Contingency [Line Items]
Change in valuation allowance tax benefit			$ 64,000,000	$ 40,000,000
U.S. States [Member]
Income Tax Contingency [Line Items]
Capital loss carryforwards			7,000,000
State and Foreign Country Jurisdiction [Member]
Income Tax Contingency [Line Items]
Valuation allowance recorded			$ 45,000,000

[1] As the Company has a June 30 fiscal year-end, the impact of the lower tax rate from the Tax Act will be phased in resulting in a U.S. statutory federal tax rate of approximately 28% for the fiscal year ended June 30, 2018 and a 21% U.S. statutory federal tax rate for fiscal years thereafter.

[2] The Company recognized a tax benefit of approximately $144 million upon reclassification of the Digital Education segment to discontinued operations in (Loss) income from discontinued operations, net of tax, in the Statement of Operations in fiscal year 2016. In addition, a tax benefit of $30 million related to the operations of the Digital Education segment was recorded to discontinued operations in (Loss) income from discontinued operations, net of tax, in the Statement of Operations in fiscal year 2016. The tax expense (benefit) shown above excludes the tax benefit of the Company's digital education business in fiscal year 2016.