Earnings per Share (Tables)

12 Months Ended

Sep. 30, 2023

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 per common share under the two-class method (in millions, except share amounts, which are reflected in thousands, and per share data):

	Fiscal Year Ended September 30,
	2023				2022				2021
	Class A		Class B		Class A		Class B		Class A		Class B
Basic and Diluted EPS:
Numerator
Net income attributable to Warner Music Group Corp.	$	119	$	311	$	149	$	402	$	68	$	236
Less: Net income attributable to participating securities	(6)		—		(7)		—		(4)		—
Net income attributable to common stockholders	$	113	$	311	$	142	$	402	$	64	$	236
Denominator
Weighted average shares outstanding	138,070		377,650		133,662		381,046		110,561		402,912
Basic and Diluted EPS	$	0.82	$	0.82	$	1.06	$	1.06	$	0.58	$	0.58