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Equity and Noncontrolling Interests - Narrative (Details) - USD ($)
12 Months Ended
Mar. 12, 2021
Sep. 30, 2024
Sep. 30, 2023
Nov. 30, 2022
Equity [Abstract]        
Aggregate amount       $ 600,000,000
Stock repurchased and retired during period (in shares)   9,424,668 1,756,777  
Average repurchase price per share (in dollars per share)   $ 29.18 $ 37.00  
Repurchase and retirement of ordinary shares   $ 275,000,000 $ 65,000,000  
Stock repurchase program, remaining authorized repurchase amount   $ 260,000,000    
Boxun | CQYFAS | The Boxun Agreement        
Redeemable Noncontrolling Interest [Line Items]        
Limited liability company or limited partnership, members or limited partners, ownership interest 25.00%