Borrowings - Narrative (Details) $ in Millions, $ in Millions			3 Months Ended
		Jan. 01, 2021	Sep. 30, 2020 USD ($) extension	Sep. 30, 2020 AUD ($) extension	Jun. 30, 2020 USD ($)
Debt Instrument [Line Items]
Long-term Debt	[1]		$ 1,284		$ 1,259
REA Group | Maximum | Subsequent Event
Debt Instrument [Line Items]
Operating income leverage ratio		3.50
Overdraft Facility 2020
Debt Instrument [Line Items]
Borrowings discount rate			4.22%
Overdraft Facility 2020 | REA Group
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity				$ 20
Annual facility fee			0.15%
Long-term Debt				$ 0
2019 Credit Agreement | Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity			$ 750
Number of extension options | extension			2	2
Extension term			1 year
Credit sublimit under credit facility			$ 100
Long-term Debt			0
2019 Credit Agreement | Revised Line Of Credit Facility | Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity			$ 1,000
Unused capacity commitment fee percentage			0.20%
2019 Credit Agreement | Eurodollar | Revised Line Of Credit Facility | Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate margin			1.375%
2019 Credit Agreement | Base Rate | Revised Line Of Credit Facility | Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate margin			0.375%

[1] The Company’s outstanding borrowings as of September 30, 2020 were incurred by certain subsidiaries of NXE Australia Pty Limited (“Foxtel” and together with such subsidiaries, the “Foxtel Debt Group”) and by REA Group and certain of its subsidiaries. Foxtel and REA Group are consolidated but non wholly-owned subsidiaries of News Corp. These borrowings are only guaranteed by Foxtel and REA Group and certain of their respective subsidiaries, as applicable, and are non-recourse to News Corp.