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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2024
Sep. 30, 2024
Accounts receivable, allowances $ 24 $ 26
Accumulated depreciation $ 632 $ 615
Class A Common Stock    
Par value (in dollars per share) $ 0.001 $ 0.001
Shares authorized (in shares) 1,000,000,000 1,000,000,000
Shares issued (in shares) 144,301,000 142,559,000
Shares outstanding (in shares) 144,301,000 142,559,000
Class B Common Stock    
Par value (in dollars per share) $ 0.001 $ 0.001
Shares authorized (in shares) 1,000,000,000 1,000,000,000
Shares issued (in shares) 375,380,000 375,380,000
Shares outstanding (in shares) 375,380,000 375,380,000