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Consolidated Statements of Equity - USD ($) $ in Millions | Total | Class A Common Stock | Class B Common Stock | Total Warner Music Group Corp. Equity (Deficit) | Common Stock Class A Common Stock | Common Stock Class B Common Stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Other Comprehensive Loss | Non-controlling Interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Sep. 30, 2021 |  |  |  |  | 122,414,000 | 391,971,000 |  |  |  |
Beginning balance at Sep. 30, 2021 | $ 46 |  |  | $ 31 | $ 0 | $ 1 | $ 1,942 | $ (1,710) | $ (202) | $ 15
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 555 |  |  | 551 |  |  |  | 551 |  | 4
Other comprehensive (loss) income, net of tax | (145) |  |  | (145) |  |  |  |  | (145) |
Dividends | (318) |  |  | (318) |  |  |  | (318) |  |
Stock-based compensation expense | 43 |  |  | 43 |  |  | 43 |  |  |
Distribution to noncontrolling interest holders | (6) |  |  |  |  |  |  |  |  | (6)
Vesting of restricted stock units, net of shares withheld for employee taxes (in shares) |  |  |  |  | 277,000 |  |  |  |  |
Vesting of restricted stock units, net of shares withheld for employee taxes | (6) |  |  | (6) |  |  | (6) |  |  |
Conversion of Class B shares to Class A shares (in shares) |  |  |  |  | 14,321,000 | 14,321,000 |  |  |  |
Shares issued under Omnibus incentive plan (in shares) |  | 463,826 |  |  | 187,000 |  |  |  |  |
Other | (1) |  |  | (4) |  |  | (4) |  |  | 3
Ending balance (in shares) at Sep. 30, 2022 |  |  |  |  | 137,199,000 | 377,650,000 |  |  |  |
Ending balance at Sep. 30, 2022 | 168 |  |  | 152 | $ 0 | $ 1 | 1,975 | (1,477) | (347) | 16
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 439 |  |  | 430 |  |  |  | 430 |  | 9
Other comprehensive (loss) income, net of tax | 25 |  |  | 25 |  |  |  |  | 25 |
Dividends | (340) |  |  | (340) |  |  |  | (340) |  |
Stock-based compensation expense | 39 |  |  | 39 |  |  | 39 |  |  |
Distribution to noncontrolling interest holders | (12) |  |  |  |  |  |  |  |  | (12)
Acquisition of noncontrolling interests | 112 |  |  |  |  |  |  |  |  | 112
Shares issued under the plan (in shares) |  |  |  |  | 869,008 |  |  |  |  |
Shares issued under Omnibus incentive plan (in shares) |  | 276,516 |  |  | 277,000 |  |  |  |  |
Other | (1) |  |  | 1 |  |  | 1 |  |  | (2)
Ending balance (in shares) at Sep. 30, 2023 |  | 138,345,000 | 377,650,000 |  | 138,345,000 | 377,650,000 |  |  |  |
Ending balance at Sep. 30, 2023 | 430 |  |  | 307 | $ 0 | $ 1 | 2,015 | (1,387) | (322) | 123
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 478 |  |  | 435 |  |  |  | 435 |  | 43
Other comprehensive (loss) income, net of tax | 75 |  |  | 75 |  |  |  |  | 75 |
Dividends | (361) |  |  | (361) |  |  |  | (361) |  |
Stock-based compensation expense | 67 |  |  | 67 |  |  | 67 |  |  |
Distribution to noncontrolling interest holders | (8) |  |  |  |  |  |  |  |  | (8)
Acquisition of noncontrolling interests | (1) |  |  |  |  |  |  |  |  | (1)
Shares issued under the plan (in shares) |  |  |  |  | 1,738,016 | 2,270,136 |  |  |  |
Exchange of Class B shares for Class A shares (in shares) |  |  |  |  | 2,270,000 | 2,270,000 |  |  |  |
Shares issued under Omnibus incentive plan (in shares) |  | 206,298 |  |  | 206,000 |  |  |  |  |
Shares issued under Omnibus Incentive Plan | (5) |  |  | (5) |  |  | (5) |  |  |
Ending balance (in shares) at Sep. 30, 2024 |  | 142,559,000 | 375,380,000 |  | 142,559,000 | 375,380,000 |  |  |  |
Ending balance at Sep. 30, 2024 | $ 675 |  |  | $ 518 | $ 0 | $ 1 | $ 2,077 | $ (1,313) | $ (247) | $ 157

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