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Financial Instruments and Fair Value Measurements - Additional Information (Detail) $ in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 AUD ($)	Jun. 30, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimates of net derivative gains related to cash flow hedges included in Accumulated other comprehensive loss			$ 1
Non-cash impairment of goodwill			0	$ 1,098
Goodwill carrying value			4,653	3,951		$ 5,147
Indefinite-lived intangible assets carrying value			1,057	947
News America Marketing
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-cash impairment of goodwill		$ 122
Non-cash impairment charge for indefinite-lived intangible assets		113
Goodwill carrying value		0				122
Indefinite-lived intangible assets carrying value		$ 195				308
News UK and News Corp Australia
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed-asset impairment charges				203
News Corp Australia
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property, plant, and equipment				235
News Corp UK
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property, plant, and equipment				$ 207
Foxtel
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-cash impairment of goodwill	$ 882
Non-cash impairment charge for indefinite-lived intangible assets	49
Goodwill carrying value	786					1,668
Indefinite-lived intangible assets carrying value	$ 140					$ 189
Cross Currency Interest Rate Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimates of net derivative gains related to cash flow hedges included in Accumulated other comprehensive loss			(5)
Cross Currency Interest Rate Derivatives \| Other Nonoperating Income (Expense)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain from discontinued cash flow hedges			(11)
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimates of net derivative gains related to cash flow hedges included in Accumulated other comprehensive loss			5
Cash Flow Hedging \| Foreign Exchange Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative			18
Cash Flow Hedging \| Cross Currency Interest Rate Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative			280
Cash Flow Hedging \| Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative					$ 300
Fair Value Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative					$ 70
Cumulative hedging adjustments included in the carrying amount			$ 0