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v3.21.1

Consolidated Statements of Equity (Deficit) (Unaudited) - USD ($) $ in Millions | Total | Cumulative Effect, Period of Adoption, Adjustment | Class A Common Stock | Class B Common Stock | Common Stock Class A Common Stock | Common Stock Class B Common Stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment | Accumulated Other Comprehensive Loss | Total Warner Music Group Corp. Equity (Deficit) | Total Warner Music Group Corp. Equity (Deficit) Cumulative Effect, Period of Adoption, Adjustment | Non-controlling Interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Sep. 30, 2019 |  |  |  |  | 0 | 505,830,022 |  |  |  |  |  |  |
Beginning balance at Sep. 30, 2019 | $ (269) |  |  |  | $ 0 | $ 1 | $ 1,127 | $ (1,177) |  | $ (240) | $ (289) |  | $ 20
Beginning balance (ASC 842) at Sep. 30, 2019 |  | $ 7 |  |  |  |  |  |  | $ 7 |  |  | $ 7 |
Beginning balance (ASC 718) at Sep. 30, 2019 |  | 33 |  |  |  |  |  |  | 33 |  |  | 33 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 48 |  |  |  |  |  |  | 46 |  |  | 46 |  | 2
Other comprehensive income (loss), net of tax | (28) |  |  |  |  |  |  |  |  | (28) | (28) |  |
Dividends (per share) | (75) |  |  |  |  |  |  | (75) |  |  | (75) |  |
Distribution to noncontrolling interest holders | (1) |  |  |  |  |  |  |  |  |  |  |  | (1)
Other (in shares) |  |  |  |  |  | 4,169,978 |  |  |  |  |  |  |
Other | 0 |  |  |  |  |  |  |  |  |  |  |  |
Ending balance (in shares) at Mar. 31, 2020 |  |  |  |  | 0 | 510,000,000 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2020 | $ (285) |  |  |  | $ 0 | $ 1 | 1,127 | (1,166) |  | (268) | (306) |  | 21
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201409Member |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance (in shares) at Dec. 31, 2019 |  |  |  |  | 0 | 510,000,000 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2019 | $ (169) |  |  |  | $ 0 | $ 1 | 1,127 | (1,088) |  | (230) | (190) |  | 21
Beginning balance (ASC 718) at Dec. 31, 2019 |  | $ 33 |  |  |  |  |  |  | $ 33 |  |  | $ 33 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | (74) |  |  |  |  |  |  | (74) |  |  | (74) |  | 0
Other comprehensive income (loss), net of tax | (38) |  |  |  |  |  |  |  |  | (38) | (38) |  |
Dividends (per share) | (37) |  |  |  |  |  |  | (37) |  |  | (37) |  |
Ending balance (in shares) at Mar. 31, 2020 |  |  |  |  | 0 | 510,000,000 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2020 | (285) |  |  |  | $ 0 | $ 1 | 1,127 | (1,166) |  | (268) | (306) |  | 21
Beginning balance (in shares) at Sep. 30, 2020 |  |  | 88,578,361 | 421,450,000 | 88,578,361 | 421,450,000 |  |  |  |  |  |  |
Beginning balance at Sep. 30, 2020 | (45) |  |  |  | $ 0 | $ 1 | 1,907 | (1,749) |  | (222) | (63) |  | 18
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 216 |  |  |  |  |  |  | 215 |  |  | 215 |  | 1
Other comprehensive income (loss), net of tax | 13 |  |  |  |  |  |  |  |  | 13 | 13 |  |
Dividends (per share) | (125) |  |  |  |  |  |  | (125) |  |  | (125) |  |
Stock-based compensation expense | 17 |  |  |  |  |  | 17 |  |  |  | 17 |  |
Distribution to noncontrolling interest holders | (3) |  |  |  |  |  |  |  |  |  |  |  | (3)
Exchange of LLC units for class A shares (in shares) |  |  |  |  | 19,234,103 | 19,234,106 |  |  |  |  |  |  |
Shares issued under the Plan (in shares) |  |  |  |  | 4,321,259 |  |  |  |  |  |  |  |
Conversion of Class B shares (in shares) |  |  |  |  | 4,754,626 | 4,754,626 |  |  |  |  |  |  |
Shares issued under Omnibus Incentive Plan (in shares) |  |  |  |  | 33,062 |  |  |  |  |  |  |  |
Ending balance (in shares) at Mar. 31, 2021 |  |  | 116,921,411 | 397,461,268 | 116,921,411 | 397,461,268 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2021 | 73 |  |  |  | $ 0 | $ 1 | 1,924 | (1,659) |  | (209) | 57 |  | 16
Beginning balance (in shares) at Dec. 31, 2020 |  |  |  |  | 111,167,356 | 403,184,814 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2020 | 33 |  |  |  | $ 0 | $ 1 | 1,913 | (1,713) |  | (185) | 16 |  | 17
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 117 |  |  |  |  |  |  | 117 |  |  | 117 |  | 0
Other comprehensive income (loss), net of tax | (24) |  |  |  |  |  |  |  |  | (24) | (24) |  |
Dividends (per share) | (63) |  |  |  |  |  |  | (63) |  |  | (63) |  |
Stock-based compensation expense | 11 |  |  |  |  |  | 11 |  |  |  | 11 |  |
Distribution to noncontrolling interest holders | (1) |  |  |  |  |  |  |  |  |  |  |  | (1)
Exchange of LLC units for class A shares (in shares) |  |  |  |  | 968,920 | 968,920 |  |  |  |  |  |  |
Exchange of Class B shares for Class A shares |  |  |  |  |  |  | 0 |  |  |  | 0 |  |
Conversion of Class B shares (in shares) |  |  |  |  | 4,754,626 | 4,754,626 |  |  |  |  |  |  |
Shares issued under Omnibus Incentive Plan (in shares) |  |  |  |  | 30,509 |  |  |  |  |  |  |  |
Ending balance (in shares) at Mar. 31, 2021 |  |  | 116,921,411 | 397,461,268 | 116,921,411 | 397,461,268 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2021 | $ 73 |  |  |  | $ 0 | $ 1 | $ 1,924 | $ (1,659) |  | $ (209) | $ 57 |  | $ 16

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