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Debt - Additional Information (Details) - USD ($)				3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 30, 2025	Jan. 27, 2023	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Feb. 05, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Debt instrument, covenant, total indebtedness to EBITDA ratio	3.50			3.50		3.50
Weighted-average interest rate of total debt	4.10%			4.10%	4.50%	4.10%	4.50%		4.30%
Interest expense, net				$ 39,000,000	$ 42,000,000	$ 76,000,000	$ 81,000,000
Interest expense, debt				44,000,000	$ 46,000,000	87,000,000	$ 91,000,000
Senior Notes
Debt Instrument [Line Items]
Long-term debt, maturities, repayments of principal until 2028	$ 0			0		0
Long-term debt, maturities, repayments of principal in rolling year five	352,000,000			352,000,000		352,000,000
Long term debt maturities repayments of principal in rolling after year five	$ 2,667,000,000			$ 2,667,000,000		$ 2,667,000,000
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Debt instrument, covenant, total indebtedness to EBITDA ratio	3.50			3.50		3.50
2020 Revolving Loans | Revolving Credit Facility | Eurodollar Applicable Margin Rate
Debt Instrument [Line Items]
Debt instrument, marginal interest rate	1.375%	1.875%
2020 Revolving Loans | Revolving Credit Facility | ABR Applicable Margin Rate
Debt Instrument [Line Items]
Debt instrument, marginal interest rate	0.375%	0.875%
Acquisition Corp.
Debt Instrument [Line Items]
Total debt, including the current portion	$ 4,020,000,000			$ 4,020,000,000		$ 4,020,000,000			$ 4,048,000,000
Acquisition Corp. | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt, including the current portion	$ 0			$ 0		$ 0			0
Term loan base rate plus election rate	1.00%			1.00%		1.00%
Interest rate applicable to overdue principal						2.00%
Acquisition Corp. | Revolving Credit Facility | Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						0.50%
Acquisition Corp. | Senior Term Loan Credit Agreement
Debt Instrument [Line Items]
Total debt, including the current portion	$ 1,295,000,000			$ 1,295,000,000		$ 1,295,000,000
Acquisition Corp. | 2.750% Senior Secured Notes due 2028
Debt Instrument [Line Items]
Total debt, including the current portion	$ 352,000,000			$ 352,000,000		$ 352,000,000			363,000,000
Interest rate	2.75%			2.75%		2.75%
Acquisition Corp. | 3.750% Senior Secured Notes due 2029
Debt Instrument [Line Items]
Total debt, including the current portion	$ 540,000,000			$ 540,000,000		$ 540,000,000			540,000,000
Interest rate	3.75%			3.75%		3.75%
Acquisition Corp. | 3.875% Senior Secured Notes due 2030
Debt Instrument [Line Items]
Total debt, including the current portion	$ 535,000,000			$ 535,000,000		$ 535,000,000			535,000,000
Interest rate	3.875%			3.875%		3.875%
Acquisition Corp. | 2.250% Senior Secured Notes due 2031
Debt Instrument [Line Items]
Total debt, including the current portion	$ 481,000,000			$ 481,000,000		$ 481,000,000			497,000,000
Interest rate	2.25%			2.25%		2.25%
Acquisition Corp. | 3.000% Senior Secured Notes due 2031
Debt Instrument [Line Items]
Total debt, including the current portion	$ 800,000,000			$ 800,000,000		$ 800,000,000			800,000,000
Interest rate	3.00%			3.00%		3.00%
Acquisition Corp. | Initial Revolving Loans | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						0.75%
Acquisition Corp. | Initial Revolving Loans | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						1.75%
Acquisition Corp. | 2020 Revolving Loans | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						0.875%
Senior secured indebtedness to EBITDA ratio	2.30			2.30		2.30
Acquisition Corp. | 2020 Revolving Loans | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						1.875%
Acquisition Corp. | Senior Term Loan Facility -Tranche G | Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						0.50%
Acquisition Corp. | Senior Term Loan Facility -Tranche G | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						1.75%
Acquisition Corp. | Senior Term Loan Facility -Tranche G | Base Rate
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						1.00%
Term loan base rate plus election rate	1.00%			1.00%		1.00%
Additional Interest rate on other overdue amounts						2.00%
Acquisition Corp. | Mortgage Term Loan due 2033
Debt Instrument [Line Items]
Total debt, including the current portion	$ 17,000,000			$ 17,000,000		$ 17,000,000			18,000,000
Acquisition Corp. | Mortgage Term Loan due 2033 | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, marginal interest rate			1.40%
Tempo
Debt Instrument [Line Items]
Asset-based securities								$ 311,000,000
Tempo | Tempo Asset-Based Notes due 2050
Debt Instrument [Line Items]
Total debt, including the current portion	$ 311,000,000			$ 311,000,000		$ 311,000,000			$ 0
Weighted-average interest rate of total debt								4.62%
Debt instrument, marginal interest rate						5.00%
Tempo | Asset-Based Class A Notes
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						3.53%
Tempo | Asset-Based Class B Notes
Debt Instrument [Line Items]
Debt instrument, marginal interest rate						4.28%

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