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Earnings per Share (Tables) | 12 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the calculation of basic and diluted net income (loss) per common share under the two-class method (in millions, except share and per share data):
| Fiscal Year Ended September 30,
| 2022 |  | 2021 |  | 2020
| Class A |  | Class B |  | Class A |  | Class B |  | Class A |  | Class B
Basic and Diluted EPS: |  |  |  |  |  |  |  |  |  |  |
Numerator |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to Warner Music Group Corp. | $ | 149 |  |  | $ | 402 |  |  | $ | 68 |  |  | $ | 236 |  |  | $ | (21) |  |  | $ | (454) |
Less: Net income attributable to participating securities | (7) |  |  | — |  |  | (4) |  |  | — |  |  | (1) |  |  | — |
Net income (loss) attributable to common stockholders | $ | 142 |  |  | $ | 402 |  |  | $ | 64 |  |  | $ | 236 |  |  | $ | (22) |  |  | $ | (454) |
Denominator |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding | 133,662,142 |  |  | 381,046,177 |  |  | 110,560,517 |  |  | 402,911,743 |  |  | 26,897,115 |  |  | 477,624,846 |
Basic and Diluted EPS | $ | 1.06 |  |  | $ | 1.06 |  |  | $ | 0.58 |  |  | $ | 0.58 |  |  | $ | (0.82) |  |  | $ | (0.95) |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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