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Debt - Additional Information (Detail)				3 Months Ended
Debt - Additional Information (Detail)	Dec. 31, 2023 USD ($)	Dec. 30, 2023	Jan. 27, 2023	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2023 USD ($)	Nov. 29, 2023 USD ($)	Sep. 30, 2023 USD ($)
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 4,041,000,000			$ 4,041,000,000				$ 4,002,000,000
Debt instrument, covenant, total indebtedness to EBITDA ratio	3.50			3.50
Interest expense, net				$ 39,000,000	$ 32,000,000
Interest expense, debt				$ 45,000,000	$ 36,000,000
Weighted-average interest rate of total debt	4.60%			4.60%	3.70%			4.10%
Senior Notes
Debt Instrument [Line Items]
Long-term debt, maturities, repayments of principal in next rolling twelve months	$ 0			$ 0
Long-term debt, maturities, repayments of principal in rolling year five	360,000,000			360,000,000
Long term debt maturities repayments of principal in rolling after year five	$ 2,368,000,000			$ 2,368,000,000
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Debt instrument, covenant, total indebtedness to EBITDA ratio	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 long-term debt, including the current portion	$ 1,295,000,000			$ 1,295,000,000
Acquisition Corp. \| Revolving Credit Facility
Debt Instrument [Line Items]
Total long-term debt, including the current portion	0			0				$ 0
Debt instrument, covenant, total indebtedness to EBITDA ratio						3.60
Commitments under revolving credit facility	$ 350,000,000			$ 350,000,000		$ 350,000,000	$ 300,000,000	300,000,000
Increase in secured indebtedness to EBITDA						140,000,000	$ 105,000,000
Secured indebtedness of EBITDA						$ 250,000,000
Senior secured indebtedness to EBITDA ratio						5.00
Senior secured indebtedness, maximum amount						$ 500,000,000
Term loan base rate plus election rate	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. \| 2.750% Senior Secured Notes due 2028
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 360,000,000			$ 360,000,000				343,000,000
Interest rate	2.75%			2.75%
Acquisition Corp. \| 3.750% Senior Secured Notes due 2029
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 540,000,000			$ 540,000,000				540,000,000
Interest rate	3.75%			3.75%
Acquisition Corp. \| 3.875% Senior Secured Notes due 2030
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 535,000,000			$ 535,000,000				535,000,000
Interest rate	3.875%			3.875%
Acquisition Corp. \| 2.250% Senior Secured Notes due 2031
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 493,000,000			$ 493,000,000				471,000,000
Interest rate	2.25%			2.25%
Acquisition Corp. \| 3.000% Senior Secured Notes due 2031
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 800,000,000			$ 800,000,000				800,000,000
Interest rate	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 \| London Interbank Offered Rate
Debt Instrument [Line Items]
Debt instrument, marginal interest rate				1.75%
Acquisition Corp. \| 2020 Revolving Loans \| Revolving Credit Facility
Debt Instrument [Line Items]
Senior secured indebtedness to EBITDA ratio	2.66			2.66
Debt instrument, marginal interest rate				0.875%
Acquisition Corp. \| 2020 Revolving Loans \| Revolving Credit Facility \| London Interbank Offered Rate
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				2.125%
Acquisition Corp. \| Senior Term Loan Facility -Tranche G \| Base Rate
Debt Instrument [Line Items]
Debt instrument, marginal interest rate				1.125%
Term loan base rate plus election rate	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 long-term debt, including the current portion	$ 18,000,000			$ 18,000,000				$ 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%