Acquisitions, Disposals and Other Transactions - Additional Information (Detail) $ in Millions, $ in Millions					1 Months Ended						3 Months Ended		12 Months Ended
		May 05, 2020 USD ($)	Jul. 31, 2017 USD ($)	Jul. 31, 2017 AUD ($)	Jan. 31, 2020 GBP (£)	Oct. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2018 AUD ($)	Apr. 30, 2018 USD ($)	Jul. 31, 2017 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jul. 31, 2020	Jun. 30, 2019 AUD ($)
Schedule Of Business Acquisitions And Divestitures [Line Items]
Consideration transferred	[1]														$ 914
Goodwill							$ 5,218				$ 5,147		$ 3,951	$ 5,147	5,218
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest													(1,524)	354	(1,089)
Long term debt											1,453		$ 1,259	1,453
Maximum
Schedule Of Business Acquisitions And Divestitures [Line Items]
Purchased technology, weighted average useful life													50 years
Equity method investment, ownership percentage													50.00%
Minimum
Schedule Of Business Acquisitions And Divestitures [Line Items]
Purchased technology, weighted average useful life													3 years
Equity method investment, ownership percentage													20.00%
News America Marketing
Schedule Of Business Acquisitions And Divestitures [Line Items]
Cash consideration receivable		$ 235
Cash at closing		$ 50
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest													$ (416)	22	$ (100)
News America Marketing | Common Stock
Schedule Of Business Acquisitions And Divestitures [Line Items]
Ownership interest after disposal		5.00%
News America Marketing | Warrant
Schedule Of Business Acquisitions And Divestitures [Line Items]
Warrant to purchase ownership interest		10.00%
News America Marketing | Maximum
Schedule Of Business Acquisitions And Divestitures [Line Items]
Deferred cash payments		$ 185
News America Marketing | Minimum
Schedule Of Business Acquisitions And Divestitures [Line Items]
Deferred cash payments		$ 125
Unruly
Schedule Of Business Acquisitions And Divestitures [Line Items]
Ownership percentage					7.00%
Lock up period					18 months
Commercial arrangement period					3 years
Total minimum revenue guarantee | £					£ 30,000,000
Hometrack Australia Pty Ltd
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition, cost of acquired entity, cash paid							$ 100	$ 130
Business acquisition purchase price allocation, amortizable intangible assets											25			25
Goodwill											74			74
Long term debt											53			$ 53			$ 70
Smartline Home Loans Pty Limited
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition, cost of acquired entity, cash paid			$ 55	$ 70
Goodwill			$ 49							$ 49
Business acquisition, acquired interest percentage			80.30%							80.30%
Non-controlling ownership percentage			19.70%							19.70%
Mandatorily redeemable period after closing, if option is not exercised												4 years
Minority interest value												$ 12
Business Combination, Minority Interest, Option to Sell, Period										3 years
Smartline Home Loans Pty Limited | Subsequent Event
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition, acquired interest percentage																19.70%
Foxtel
Schedule Of Business Acquisitions And Divestitures [Line Items]
Consideration transferred									$ 331
Cash acquired									78
Total assets acquired									4,225
Business acquisition, purchased technology amount									967
Goodwill									$ 1,559
Equity method investment, ownership percentage									50.00%
Percentage of the entity that the excess purchase price valuation is based on									100.00%
Ownership interest													65.00%
Business acquisition purchase price allocation, tangible assets									$ 871
Business acquisition purchase price allocation, Outstanding borrowings									1,751
Business acquisition purchase price allocation, amortizable and indefinite-lived intangible assets									861
Minority interest value									$ 578
Opcity
Schedule Of Business Acquisitions And Divestitures [Line Items]
Consideration transferred						$ 210
Business acquisition, cost of acquired entity, cash paid						182
Cash acquired						7
Deferred compensation related to business acquisition						$ 28
Acquisition cost recognized as compensation expense, period for recognition						3 years
Cash held back after closing						$ 20
Total assets acquired						73
Goodwill						124
Opcity | Purchased technology
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition, purchased technology amount						$ 49
Purchased technology, weighted average useful life						12 years
Opcity | Leads and Customer Relationships
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition purchase price allocation, amortizable intangible assets						$ 24
Finite lived intangible assets, weighted average useful life						9 years
FOX SPORTS Australia
Schedule Of Business Acquisitions And Divestitures [Line Items]
Company ownership percentage									100.00%
Write-off of channel distribution agreement intangible asset											317
FOX SPORTS Australia | Foxtel
Schedule Of Business Acquisitions And Divestitures [Line Items]
Company ownership percentage													65.00%
Foxtel and Fox Sports Australia
Schedule Of Business Acquisitions And Divestitures [Line Items]
Loss on transactions											$ (337)
Subscriber Relationships | Foxtel
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition purchase price allocation, amortizable intangible assets									$ 468
Finite lived intangible assets, weighted average useful life									10 years
Trade Names | Foxtel
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition purchase price allocation, indefinite-lived intangible assets									$ 270
Customer Relationships | Hometrack Australia Pty Ltd
Schedule Of Business Acquisitions And Divestitures [Line Items]
Finite lived intangible assets, weighted average useful life														15 years
Customer Relationships | Smartline Home Loans Pty Limited
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition purchase price allocation, amortizable intangible assets			$ 19							$ 19
Finite lived intangible assets, weighted average useful life										16 years
Customer Relationships | Foxtel
Schedule Of Business Acquisitions And Divestitures [Line Items]
Finite lived intangible assets, weighted average useful life									15 years
Business acquisition purchase price allocation, amortizable and indefinite-lived intangible assets									$ 123
Technology | Hometrack Australia Pty Ltd
Schedule Of Business Acquisitions And Divestitures [Line Items]
Finite lived intangible assets, weighted average useful life														8 years
Telstra | Foxtel
Schedule Of Business Acquisitions And Divestitures [Line Items]
Ownership interest held by minority interest													35.00%

[1] See Note 4—Acquisitions, Disposals and Other Transactions.