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Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Depreciation	$ 71	$ 61	$ 55
Selling, General and Administrative Expenses
Depreciation	$ 71	$ 61	$ 55
Common Class A
Net (loss) income per share attributable to Warner Music Group Corp.’s stockholders (in usd per share)	$ (0.82)	$ 0	$ 0
Weighted average common shares (in shares)	26,897,115	0	0
Common Class B
Net (loss) income per share attributable to Warner Music Group Corp.’s stockholders (in usd per share)	$ (0.95)	$ 0.51	$ 0.61
Weighted average common shares (in shares)	477,624,846	501,991,944	502,630,835

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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-Name Accounting Standards Codification
-Topic 360
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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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