XML 69 R55.htm IDEA: XBRL DOCUMENT v3.19.2
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jul. 01, 2018
Jul. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Significant Accounting Policies [Line Items]          
Cash and cash equivalents     $ 1,643 $ 2,034  
Insignificant influence on investments     Generally less than a 20% ownership interest    
Unearned advance write-off policy     recovery and a provision is established to write-off the unearned advance, usually between 12 and 24 months after initial publication of the first format.    
Advertising and promotional expenses     $ 669 663 $ 587
Advertising [Member]          
Significant Accounting Policies [Line Items]          
Revenue reclassifications       57 $ 45
Accounting Standards Update 2014-09 [Member]          
Significant Accounting Policies [Line Items]          
Adjustment to retained earnings $ 20        
Accounting Standards Update 2016-01 [Member]          
Significant Accounting Policies [Line Items]          
Adjustment to retained earnings $ 22 $ 22      
Wireless Group Plc [Member]          
Significant Accounting Policies [Line Items]          
Restricted cash     $ 0 0  
Maximum [Member]          
Significant Accounting Policies [Line Items]          
Interest owned to exercise significant influence     50.00%    
Property, plant and equipment, useful life     50 years    
Minimum [Member]          
Significant Accounting Policies [Line Items]          
Interest owned to exercise significant influence     20.00%    
Property, plant and equipment, useful life     3 years    
Internal Use Software [Member] | Maximum [Member]          
Significant Accounting Policies [Line Items]          
Property, plant and equipment, useful life     13 years    
Internal Use Software [Member] | Minimum [Member]          
Significant Accounting Policies [Line Items]          
Property, plant and equipment, useful life     2 years    
REA Group [Member]          
Significant Accounting Policies [Line Items]          
Cash and cash equivalents     $ 97 $ 86