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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 |  |  |

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