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Restructuring and Impairments - Additional Information (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Feb. 29, 2024
Jun. 30, 2024
Jun. 30, 2024
Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]        
Restructuring charges, pretax $ 135      
Restructuring charges $ 80      
Severance Costs   $ 1 $ 47  
Asset impairment charges   50 50 $ 0
Corporate expenses and eliminations        
Restructuring Cost and Reserve [Line Items]        
Severance Costs   4 4  
Asset impairment charges   3 3  
Recorded Music | Operating Segments        
Restructuring Cost and Reserve [Line Items]        
Severance Costs   43 43  
Asset impairment charges   47 47  
March 2023 Restructuring Plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   $ 1 $ 1  
Employee Severance        
Restructuring Cost and Reserve [Line Items]        
Expected number of positions to eliminated as a percentage (as a percent) 10.00%      
Employee Severance and Other Restructuring        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges, pretax $ 85      
Property Wind Down        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges, pretax $ 50