Debt and Financing Arrangements - Narrative (Details) € in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 EUR (€)	Sep. 30, 2022 USD ($)	Aug. 30, 2024 USD ($)	Aug. 30, 2024 EUR (€)	Oct. 31, 2023	Oct. 01, 2023	Sep. 30, 2023 EUR (€)
Debt Instrument [Line Items]
Deferred finance fee charges					$ 4,000,000		$ 8,000,000
Total interest paid				$ 187,000,000	$ 132,000,000		192,000,000
Proceeds from sale and collection of receivables				$ 170,000,000
Supplier Finance Program, Obligation, Current, Statement of Financial Position [Extensible Enumeration]				Accounts payable	Accounts payable							Accounts payable
Supplier finance program, obligation, current				$ 76,000,000	$ 50,000,000
Senior notes
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					988,000,000
7.000 % Senior Secured Notes Due 2028 | Senior notes
Debt Instrument [Line Items]
Face amount of debt					500,000,000
Proceeds from issuance of senior long-term debt					$ 494,000,000
Interest rate					7.00%							7.00%
8.250% Senior unsecured Notes Due 2031 | Unsecured debt
Debt Instrument [Line Items]
Face amount of debt					$ 500,000,000
Proceeds from issuance of senior long-term debt					$ 494,000,000
Interest rate					8.25%							8.25%
3.50% Notes due in 2024 | Unsecured debt
Debt Instrument [Line Items]
Payments of debt issuance costs					$ 16,000,000
Write off of deferred debt issuance cost					$ 2,000,000	€ 2
Interest rate				3.50%	3.50%					3.50%		3.50%
Debt instrument, repurchased face amount					$ 743,000,000							€ 700
Long-term debt, gross				$ 0	130,000,000			$ 132,000,000	€ 123
Debt Instrument, unamortized premium					7,000,000							7
Interest payable					3,000,000							€ 3
4.875% Notes due in 2026 | Unsecured debt
Debt Instrument [Line Items]
Face amount of debt				$ 795,000,000	795,000,000
Interest rate				4.875%
Long-term debt, gross				$ 795,000,000	795,000,000
Senior Notes due 2025, 9.00% | Senior notes
Debt Instrument [Line Items]
Face amount of debt							$ 600,000,000
Interest rate							9.00%
Debt Instrument, unamortized premium							$ 34,000,000
Interest payable							$ 19,000,000
Minimum
Debt Instrument [Line Items]
Supplier finance program, payment period											45 days
Maximum
Debt Instrument [Line Items]
Supplier finance program, payment period											120 days
Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity				1,250,000,000
Payments of debt issuance costs				7,000,000
Credit facility expansion (up to)				250,000,000
Remaining borrowing capacity				$ 779,000,000
Revolving credit facility | Minimum
Debt Instrument [Line Items]
Commitment fee on unused portion of commitments (as percent)				0.25%
Basis spread				1.50%
Revolving credit facility | Maximum
Debt Instrument [Line Items]
Commitment fee on unused portion of commitments (as percent)				0.375%
Basis spread				2.00%
Revolving credit facility | North American
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 950,000,000
Revolving credit facility | European
Debt Instrument [Line Items]
Maximum borrowing capacity				300,000,000
Credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity				150,000,000
Letter of Credit
Debt Instrument [Line Items]
Remaining borrowing capacity				11,000,000
Term loan | Term Loan B - LIBOR plus 3.25% due in 2028
Debt Instrument [Line Items]
Debt instrument, modification cost			$ 5,000,000
Debt issuance costs, gross				4,000,000
Term loan | Term Loan B - LIBOR plus 3.25% due in 2028
Debt Instrument [Line Items]
Basis spread	2.75%	3.25%
Face amount of debt				$ 632,000,000
Repayments of secured debt					350,000,000
Write off of deferred debt issuance cost					$ 2,000,000
Debt instrument period percentage				1.00%
First lien secured net leverage ratio				1.75
Term loan | Incremental term loan
Debt Instrument [Line Items]
Face amount of debt				$ 750,000,000