Revenue Recognition (Tables)

3 Months Ended

Dec. 31, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregates Revenue by Geographical Market and Product Type (Segment)

The following tables summarize our disaggregated revenue by primary geographical markets (in millions):

	Three Months Ended December 31, 2023
	Corrugated Packaging		Consumer Packaging		Global Paper		Distribution		Intersegment  Sales			Total
U.S.	$	1,796.4	$	593.8	$	820.5	$	248.1	$	(61.0	)	$	3,397.8
Latin America		485.4		6.1		23.5		40.4		(4.1	)		551.3
Canada		135.1		116.7		51.1		1.2		(0.7	)		303.4
EMEA (1)		3.0		270.9		11.9		—		(1.4	)		284.4
Asia Pacific		—		71.8		11.3		—		—			83.1
Total	$	2,419.9	$	1,059.3	$	918.3	$	289.7	$	(67.2	)	$	4,620.0

(1)Europe, Middle East and Africa ("EMEA")

	Three Months Ended December 31, 2022
	Corrugated Packaging		Consumer Packaging		Global Paper		Distribution		Intersegment  Sales			Total
U.S.	$	1,973.5	$	703.0	$	1,022.7	$	276.7	$	(71.5	)	$	3,904.4
Latin America		225.5		51.7		33.6		41.4		(1.3	)		350.9
Canada		137.1		123.7		45.5		3.4		(1.5	)		308.2
EMEA		1.3		259.9		11.1		—		(0.1	)		272.2
Asia Pacific		—		76.7		10.7		—		—			87.4
Total	$	2,337.4	$	1,215.0	$	1,123.6	$	321.5	$	(74.4	)	$	4,923.1

Summary of Opening and Closing Balances of Contract Assets and Contract Liabilities

The opening and closing balances of our contract assets and contract liabilities are as follows. Contract assets and contract liabilities are reported within Other current assets and Other current liabilities, respectively, on the consolidated balance sheets (in millions).

	Contract Assets (Short-Term)		Contract Liabilities (Short-Term)
Beginning balance - October 1, 2023	$	241.7	$	13.5
Increase (decrease)		9.4		(2.6	)
Ending balance - December 31, 2023	$	251.1	$	10.9