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Segment Information - Schedule of Components of Adjusted OIBDA to Operating Income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023
Segment Reporting [Abstract] |  |  |  |
Operating income | $ 119 | $ 124 | $ 473 | $ 389
Amortization expense | 57 | 61 | 112 | 124
Depreciation expense | 26 | 22 | 52 | 43
Restructuring and impairments | 95 | 41 | 95 | 41
Transformation initiatives and other related costs | 19 | 14 | 38 | 26
Executive transition costs | 0 | 3 | 0 | 3
Net loss (gain) on divestitures | (14) | 0 | (31) | (41)
Non-cash stock-based compensation and other related costs | 10 | 21 | 24 | 36
Adjusted OIBDA | $ 312 | $ 286 | $ 763 | $ 621

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