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Equity Based Compensation - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 1 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Nov. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Equity-based compensation $ 23us-gaap_AllocatedShareBasedCompensationExpense $ 3us-gaap_AllocatedShareBasedCompensationExpense $ 44us-gaap_AllocatedShareBasedCompensationExpense $ 23us-gaap_AllocatedShareBasedCompensationExpense  
Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Converted stock         4,300,000us-gaap_ConversionOfStockSharesConverted1
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Assumed options exercised 1,800,000nws_ShareBasedCompensationArrangementByShareBasedPaymentAwardAssumedOptionsExercised
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
  2,200,000nws_ShareBasedCompensationArrangementByShareBasedPaymentAwardAssumedOptionsExercised
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
   
Restricted Stock Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Converted stock         2,500,000us-gaap_ConversionOfStockSharesConverted1
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Assumed RSUs and restricted stock awards vested     800,000nws_ShareBasedCompensationArrangementByShareBasedPaymentAwardAssumedOtherThanOptionsVested
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
   
Stock based compensation award, vested 800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
  1,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
   
Restricted Stock Units [Member] | Settled in Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock units granted 500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
  500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
 
Stock based compensation award, vested 800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
  1,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
   
Restricted Stock Units [Member] | Settled in Cash [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock based compensation award, vested     100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInCashMember
   
Stock based compensation award     0.9us-gaap_EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInCashMember
   
Performance Stock Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock units granted 200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
  3,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
4,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
 
Stock based compensation award, vested     2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
   
Performance Stock Units [Member] | Settled in Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock units granted 200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
  2,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
2,700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
 
Stock based compensation award, vested     1,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInStockMember
   
Performance Stock Units [Member] | Settled in Cash [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock based compensation award, vested     500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInCashMember
   
Stock based compensation award     $ 8.2us-gaap_EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_StatementScenarioAxis
= nws_SettledInCashMember
   
2013 LTIP [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award shares authorized 30,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_ConversionOfStockByUniqueDescriptionAxis
= nws_LongTermIncentivePlanMember
  30,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_ConversionOfStockByUniqueDescriptionAxis
= nws_LongTermIncentivePlanMember