Goodwill (Tables)

3 Months Ended

Dec. 31, 2023

Goodwill

Carrying Amount of Goodwill

	Post Consumer Brands		Weetabix		Foodservice		Refrigerated Retail		Total
Balance, September 30, 2023
Goodwill (gross)	$	2,261.1	$	854.3	$	1,355.3	$	803.7	$	5,274.4
Accumulated impairment losses	(609.1)		—		—		(90.9)		(700.0)
Goodwill (net)	$	1,652.0	$	854.3	$	1,355.3	$	712.8	$	4,574.4
Goodwill from acquisition	41.6		—		—		—		41.6
Currency translation adjustment	0.1		36.3		—		—		36.4
Balance, December 31, 2023
Goodwill (gross)	$	2,302.8	$	890.6	$	1,355.3	$	803.7	$	5,352.4
Accumulated impairment losses	(609.1)		—		—		(90.9)		(700.0)
Goodwill (net)	$	1,693.7	$	890.6	$	1,355.3	$	712.8	$	4,652.4