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Fair Value Measurements - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2018
Dec. 31, 2016
Mar. 31, 2018
Mar. 31, 2017
Foxtel [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Write down of investment $ 957 $ 227 $ 957 $ 227
Investments carrying value prior to recognizing non-cash impairment charges 1,588 1,432 1,588  
Investments carrying value subsequent to recognizing non-cash impairment charges 631 1,205 631  
News America Marketing [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Non-cash impairment charge of goodwill 120   120  
Non-cash impairment charge for indefinite-lived intangible assets 45   45  
Goodwill carrying value prior to recognizing non-cash impairment charges 301   301  
Goodwill carrying value subsequent to recognizing non-cash impairment charges 181   181  
Carrying value of intangible assets prior to recognizing non-cash impairment charges 391   391  
Carrying value of intangible assets subsequent to recognizing non-cash impairment charges 346   346  
Non-cash impairment of goodwill and indefinite-lived intangible assets 165   165  
FOX SPORTS Australia Reporting Unit [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Non-cash impairment charge of goodwill 41   41  
Goodwill carrying value prior to recognizing non-cash impairment charges 490   490  
Goodwill carrying value subsequent to recognizing non-cash impairment charges 449   449  
Non-cash impairment of goodwill and indefinite-lived intangible assets $ 41   $ 41  
News Corp Australia [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Fixed-asset impairment charges   310    
Fixed assets carrying value prior to recognizing non-cash impairment charges   667    
Fixed assets carrying value subsequent to recognizing non-cash impairment charges   375    
Fixed assets carrying value of intangible assets prior to recognizing non-cash impairment charges   48    
Fixed assets carrying value of intangible assets subsequent to recognizing non-cash impairment charges   $ 30