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v3.24.3

Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022 | Nov. 14, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Income tax obligations | $ 5 | $ 0 | $ 6 |
Non-cash compensation expense | 52 | 49 | 39 |
Non-cash stock-based compensation expense | $ 52 | $ 49 | $ 39 |
Omnibus Incentive Plan | Subsequent Event |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share repurchase program, authorized, amount |  |  |  | $ 100
Restricted Stock Units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in dollars per share) | $ 35.79 | $ 34.93 | $ 44.38 |
Awards vested in period, intrinsic value | $ 4 | $ 1 | $ 18 |
Unrecognized compensation costs | $ 37 |  |  |
Total compensation of unvested awards expected to be recognized, weighted average period | 2 years 8 months 12 days |  |  |
Non-cash stock-based compensation expense | $ 13 |  |  |
Restricted Stock Units (RSUs) | Restructuring Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Non-cash stock-based compensation expense | $ 14 | $ 2 |  |
Performance Shares Units (PSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in dollars per share) | $ 43.49 | $ 60.25 |  |
Unrecognized compensation costs | $ 16 |  |  |
Total compensation of unvested awards expected to be recognized, weighted average period | 1 year 7 months 6 days |  |  |
Non-cash stock-based compensation expense | $ 8 | $ 4 |  |
Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares issued under Omnibus incentive plan (in shares) | 206,298 | 276,516 | 463,826 |
Class A Common Stock | Omnibus Incentive Plan | Subsequent Event |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share repurchase program, authorized, amount |  |  |  | $ 100
Class A Common Stock | Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares issued under Omnibus incentive plan (in shares) | 206,000 | 277,000 | 187,000 |
Shares issued under the plan (in shares) | 1,738,016 | 869,008 |  |
Common Class B | Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares issued under the plan (in shares) | 2,270,136 |  |  |
Omnibus Incentive Plan | Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) | 31,169,099 |  |  |
Share awards vesting period | 10 years |  |  |
Shares held in employee stock option plan, allocated (in shares) | 1,011,333 |  |  |
Common stock available for issuance (in shares) | 30,157,766 |  |  |

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