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Additional Financial Information - Narrative (Detail) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 USD ($) $ / shares | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) $ / shares | Jun. 30, 2022 USD ($) | May 10, 2023 $ / shares
Dividends Payable [Line Items] |  |  |  |  |
Interest payments | $ 29 | $ 21 | $ 104 | $ 78 |
Income and withholding taxes paid | 49 | 38 | 166 | 104 |
Net gain on divestiture | $ 0 | $ 0 | $ 41 | 0 |
Debt instrument, covenant, total indebtedness to EBITDA ratio | 3.50 |  | 3.50 |  |
Dividends paid | $ 84 |  | $ 251 | 235 |
Dividends paid (in dollars per share) | $ / shares | $ 0.16 |  | $ 0.48 |  |
Noncash investing activities related to acquisition of music publishing rights and music catalogs |  |  |  | $ 125 |
Common Stock |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Cash dividends declared (in dollars per share) | $ / shares |  |  |  |  | $ 0.16

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