Acquisitions, Disposals and Other Transactions - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended			4 Months Ended	9 Months Ended	1 Months Ended
	Aug. 31, 2014	Dec. 31, 2013	Nov. 30, 2014	Mar. 31, 2015	Mar. 31, 2015	Sep. 30, 2013 Product
Harlequin Enterprises Limited [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition, cost of acquired entity	$ 414
Business acquisition purchase price allocation, cash	19
Business acquisition purchase price allocation, net tangible assets	120
Business acquisition purchase price allocation, net intangible assets	165
Business acquisition purchase price allocation, non-amortizable intangible assets	105
Business acquisition purchase price allocation, finite lived intangible assets	60
Finite lived intangible assets, weighted average useful life	5 years
Business acquisition purchase price allocation, deferred tax liability	35
Business acquisition purchase price allocation, goodwill amount	180
Storyful Limited [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition, cost of acquired entity		25
Business acquisition, cost of acquired entity, cash paid		19
Move Inc [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition, cost of acquired entity			892
Business acquisition purchase price allocation, cash			108
Business acquisition purchase price allocation, net intangible assets			260
Business acquisition purchase price allocation, deferred tax liability			41
Shares purchase price			$ 21.00
Business acquisition, cost of acquired entity, cash paid			864
Fair value of assumed outstanding equity awards			67
Business acquisition pre-combination services			28
Consideration transferred for future services			39
Business combination , weighted average remaining service period			2 years 6 months
Business acquisition, cash paid for outstanding indebtedness				129
Net operating loss carryforwards			940
Move Inc [Member] | Trademarks and Other Trademarks and Domain Names [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition purchase price allocation, non-amortizable intangible assets				160	160
Move Inc [Member] | Customer Relationships [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Business acquisition purchase price allocation, finite lived intangible assets				$ 100	$ 100
Useful life of amortizable intangible assets					5 years
LMG [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
States of operation						7
LMG [Member] | Daily Newspapers [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Number of products						8
LMG [Member] | Weekly Newspapers [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Number of products						15
REA Group Limited [Member]
Schedule Of Business Acquisitions And Divestitures [Line Items]
Interest acquired				20.00%	20.00%
Company ownership percentage					61.60%