Additional capital contribution required in the event the equity investee is required to fund the repurchase of shares.

No definition available.

Name:	fox_AdditionalCapitalContributionRequiredInAShareRepurchaseEvent
Namespace Prefix:	fox_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The percentage of equity interest issued by an equity method investment.

+ References

No definition available.

+ Details

Name:	fox_EquityMethodInvestmentPercentageOfEquityInterestIssued
Namespace Prefix:	fox_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The period an equity method investor can put their shares to the equity method investment and an equity method investment can call the shares from an equity method investor.

+ References

No definition available.

+ Details

Name:	fox_EquityMethodInvestmentPutCallPeriod
Namespace Prefix:	fox_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_InvestmentHoldingsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=fox_HuluLimitedLiabilityCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investments (Narratives) (Details) - Hulu - USD ($) $ in Millions	1 Months Ended	6 Months Ended	12 Months Ended
	Aug. 31, 2016	Dec. 31, 2017	Dec. 31, 2018
Investment Holdings [Line Items]
Equity Method Investment, percentage of equity interest issued	10.00%
Equity method investment, ownership percentage	30.00%
Equity method investment, put/call period	36 months
Investments in equity affiliates		$ 200
Scenario, Forecast
Investment Holdings [Line Items]
Investments in equity affiliates			$ 450
Maximum
Investment Holdings [Line Items]
Additional capital contribution required in the event the equity investee is required to fund the repurchase of shares	$ 300