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Debt - Additional Information (Details) - USD ($) |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 30, 2024 | Jan. 27, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2024
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term debt, including the current portion | $ 3,987,000,000 |  |  | $ 3,987,000,000 |  | $ 4,048,000,000
Debt instrument, covenant, total indebtedness to EBITDA ratio | 3.50 |  |  | 3.50 |  |
Interest expense, net |  |  |  | $ 37,000,000 | $ 39,000,000 |
Interest expense, debt |  |  |  | $ 43,000,000 | $ 45,000,000 |
Weighted-average interest rate of total debt | 4.20% |  |  | 4.20% | 4.60% | 4.30%
Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, maturities, repayments of principal until 2028 | $ 0 |  |  | $ 0 |  |
Long-term debt, maturities, repayments of principal in rolling year five | 337,000,000 |  |  | 337,000,000 |  |
Long term debt maturities repayments of principal in rolling after year five | $ 2,337,000,000 |  |  | $ 2,337,000,000 |  |
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
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 | $ 337,000,000 |  |  | $ 337,000,000 |  | 363,000,000
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 | $ 462,000,000 |  |  | $ 462,000,000 |  | 497,000,000
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 | 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 | 2.11 |  |  | 2.11 |  |
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% |  |
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% |  |  |

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