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Condensed Consolidated Statements of Equity - USD ($) $ in Millions | Total | Class A Common Stock | Class B Common Stock | Total Warner Music Group Corp. Equity | 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, 2023 |  |  |  |  | 138,345,000 | 377,650,000 |  |  |  |
Beginning balance at Sep. 30, 2023 | $ 430 |  |  | $ 307 | $ 0 | $ 1 | $ 2,015 | $ (1,387) | $ (322) | $ 123
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 289 |  |  | 255 |  |  |  | 255 |  | 34
Other comprehensive loss (income), net of tax | 21 |  |  | 21 |  |  |  |  | 21 |
Dividends | (178) |  |  | (178) |  |  |  | (178) |  |
Stock-based compensation expense | 33 |  |  | 33 |  |  | 33 |  |  |
Distribution to noncontrolling interest holders | (5) |  |  |  |  |  |  |  |  | (5)
Shares issued under the plan (in shares) |  |  |  |  | 1,738,000 |  |  |  |  |
Exchange of Class B shares for Class A shares (in shares) |  |  |  |  | 1,335,000 | 1,335,000 |  |  |  |
Shares issued under Omnibus Incentive Plan (in shares) |  |  |  |  | 178,000 |  |  |  |  |
Ending balance (in shares) at Mar. 31, 2024 |  |  |  |  | 141,596,000 | 376,315,000 |  |  |  |
Ending balance at Mar. 31, 2024 | 585 |  |  | 433 | $ 0 | $ 1 | 2,043 | (1,310) | (301) | 152
Beginning balance (in shares) at Dec. 31, 2023 |  |  |  |  | 140,637,000 | 377,103,000 |  |  |  |
Beginning balance at Dec. 31, 2023 | 616 |  |  | 463 | $ 0 | $ 1 | 2,039 | (1,317) | (260) | 153
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 96 |  |  | 96 |  |  |  | 96 |  |
Other comprehensive loss (income), net of tax | (41) |  |  | (41) |  |  |  |  | (41) |
Dividends | (89) |  |  | (89) |  |  |  | (89) |  |
Stock-based compensation expense | 9 |  |  | 9 |  |  | 9 |  |  |
Distribution to noncontrolling interest holders | (1) |  |  |  |  |  |  |  |  | (1)
Exchange of Class B shares for Class A shares (in shares) |  |  |  |  | 788,000 | 788,000 |  |  |  |
Shares issued under Omnibus Incentive Plan (in shares) |  |  |  |  | 171,000 |  |  |  |  |
Shares issued under Omnibus Incentive Plan | (5) |  |  | (5) |  |  | (5) |  |  |
Ending balance (in shares) at Mar. 31, 2024 |  |  |  |  | 141,596,000 | 376,315,000 |  |  |  |
Ending balance at Mar. 31, 2024 | 585 |  |  | 433 | $ 0 | $ 1 | 2,043 | (1,310) | (301) | 152
Beginning balance (in shares) at Sep. 30, 2024 |  | 142,559,000 | 375,380,000 |  | 142,559,000 | 375,380,000 |  |  |  |
Beginning balance at Sep. 30, 2024 | 675 |  |  | 518 | $ 0 | $ 1 | 2,077 | (1,313) | (247) | 157
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 277 |  |  | 272 |  |  |  | 272 |  | 5
Other comprehensive loss (income), net of tax | (45) |  |  | (45) |  |  |  |  | (45) |
Dividends | (189) |  |  | (189) |  |  |  | (189) |  |
Stock-based compensation expense | 34 |  |  | 34 |  |  | 34 |  |  |
Distribution to noncontrolling interest holders | (8) |  |  |  |  |  |  |  |  | (8)
Acquisition of noncontrolling interests | 74 |  |  |  |  |  |  |  |  | 74
Vesting of restricted stock units, net of shares withheld for employee taxes (in shares) |  |  |  |  | 795,000 |  |  |  |  |
Vesting of restricted stock units, net of shares withheld for employee taxes | (19) |  |  | (19) |  |  | (19) |  |  |
Shares issued under the plan (in shares) |  |  |  |  | 1,738,018 |  |  |  |  |
Shares issued under Omnibus Incentive Plan (in shares) |  |  |  |  | 794,789 |  |  |  |  |
Common shares repurchased and retired (in shares) |  |  |  |  | (60,000) |  |  |  |  |
Common shares repurchased and retired | (2) |  |  | (2) |  |  | (2) |  |  |
Other | (7) |  |  | (2) |  |  | (2) |  |  | (5)
Ending balance (in shares) at Mar. 31, 2025 |  | 145,032,000 | 375,380,000 |  | 145,032,000 | 375,380,000 |  |  |  |
Ending balance at Mar. 31, 2025 | 790 |  |  | 567 | $ 0 | $ 1 | 2,088 | (1,230) | (292) | 223
Beginning balance (in shares) at Dec. 31, 2024 |  |  |  |  | 144,301,000 | 375,380,000 |  |  |  |
Beginning balance at Dec. 31, 2024 | 697 |  |  | 545 | $ 0 | $ 1 | 2,091 | (1,171) | (376) | 152
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 36 |  |  | 36 |  |  |  | 36 |  |
Other comprehensive loss (income), net of tax | 84 |  |  | 84 |  |  |  |  | 84 |
Dividends | (95) |  |  | (95) |  |  |  | (95) |  |
Stock-based compensation expense | 14 |  |  | 14 |  |  | 14 |  |  |
Acquisition of noncontrolling interests | 74 |  |  |  |  |  |  |  |  | 74
Vesting of restricted stock units, net of shares withheld for employee taxes (in shares) |  |  |  |  | 731,000 |  |  |  |  |
Vesting of restricted stock units, net of shares withheld for employee taxes | (17) |  |  | (17) |  |  | (17) |  |  |
Shares issued under Omnibus Incentive Plan (in shares) |  |  |  |  | 730,903 |  |  |  |  |
Other | (3) |  |  |  |  |  |  |  |  | (3)
Ending balance (in shares) at Mar. 31, 2025 |  | 145,032,000 | 375,380,000 |  | 145,032,000 | 375,380,000 |  |  |  |
Ending balance at Mar. 31, 2025 | $ 790 |  |  | $ 567 | $ 0 | $ 1 | $ 2,088 | $ (1,230) | $ (292) | $ 223

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