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Subsequent Events- Additional Information (Detail)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Aug. 10, 2021
board_member
$ / shares
Dec. 31, 2021
USD ($)
Jun. 30, 2021
$ / shares
Jun. 30, 2020
$ / shares
Jun. 30, 2019
$ / shares
Common Class A          
Subsequent Event [Line Items]          
Cash dividend declared per share (in dollars per share)     $ 0.20 $ 0.20 $ 0.20
Common Class B          
Subsequent Event [Line Items]          
Cash dividend declared per share (in dollars per share)     $ 0.20 $ 0.20 $ 0.20
Subsequent Event | Oil Price Information Services | Forecast          
Subsequent Event [Line Items]          
Consideration transferred | $   $ 1,150      
Subsequent Event | PropertyGuru Pte. Ltd. | REA Group          
Subsequent Event [Line Items]          
Equity method investment, ownership percentage 18.00%        
Equity method investment, diluted ownership percentage 16.60%        
Number of Board Director's seats acquired | board_member 1        
Subsequent Event | 99.co | REA Group          
Subsequent Event [Line Items]          
Equity method investment, ownership percentage 27.00%        
Subsequent Event | Common Class A          
Subsequent Event [Line Items]          
Cash dividend declared per share (in dollars per share) $ 0.10        
Subsequent Event | Common Class B          
Subsequent Event [Line Items]          
Cash dividend declared per share (in dollars per share) $ 0.10