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Segment Information - Schedule of Components of Adjusted OIBDA to Operating Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Segment Reporting [Abstract] |  |  |
Operating income | $ 823 | $ 790 | $ 714
Amortization expense | 224 | 245 | 263
Depreciation expense | 103 | 87 | 76
Restructuring and impairments | 177 | 42 | 8
Transformation initiative costs | 76 | 53 | 46
Executive transition costs | 0 | 7 | 0
Net gain on divestitures | (32) | (41) | 0
Non-cash stock-based compensation and other related costs | 61 | 52 | 42
Adjusted OIBDA | $ 1,432 | $ 1,235 | $ 1,149

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