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v3.23.1

Debt - Additional Information (Detail) € in Millions |  |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 27, 2023 USD ($) | Nov. 01, 2022 USD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2023 EUR (€) | Sep. 30, 2022
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument, covenant, total indebtedness to EBITDA ratio |  |  | 3.50 |  | 3.50 |  | 3.50 |
Interest expense, net |  |  | $ 35,000,000 | $ 32,000,000 | $ 67,000,000 | $ 62,000,000 |  |
Interest Expense, Debt |  |  | $ 38,000,000 | $ 32,000,000 | $ 75,000,000 | $ 61,000,000 |  |
Weighted-average interest rate of total debt |  |  | 4.00% | 3.30% | 4.00% | 3.30% | 4.00% | 3.50%
2.750% Senior Secured Notes due 2028 | Acquisition Corp. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate |  |  | 2.75% |  | 2.75% |  | 2.75% |
Face or principal amount of debt instrument | € |  |  |  |  |  |  | € 325 |
3.875% Senior Secured Notes due 2030 | Acquisition Corp. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate |  |  | 3.875% |  | 3.875% |  | 3.875% |
3.000% Senior Secured Notes due 2031 | Acquisition Corp. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate |  |  | 3.00% |  | 3.00% |  | 3.00% |
3.750% Senior Secured Notes due 2029 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate |  |  | 3.75% | 3.75% | 3.75% | 3.75% | 3.75% |
3.750% Senior Secured Notes due 2029 | Acquisition Corp. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate |  |  | 3.75% |  | 3.75% |  | 3.75% |
2.250% Senior Secured Notes due 2031 | Acquisition Corp. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate |  |  | 2.25% |  | 2.25% |  | 2.25% |
Face or principal amount of debt instrument | € |  |  |  |  |  |  | € 445 |
Senior Term Loan Facility | Acquisition Corp. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, increase |  | $ 150,000,000 |  |  |  |  |  |
Maximum commitments under the facility |  | $ 1,295,000,000 |  |  |  |  |  |
Term Loan Mortgage | Acquisition Corp. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Face or principal amount of debt instrument | $ 19,000,000 |  |  |  |  |  |  |
Term Loan Mortgage | Acquisition Corp. | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument, marginal interest rate | 1.40% |  |  |  |  |  |  |
Senior Notes |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Scheduled maturities of long-term debt in 2023 |  |  | $ 0 |  | $ 0 |  |  |
Scheduled maturities of long-term debt in 2024 |  |  | 0 |  | 0 |  |  |
Scheduled maturities of long-term debt in 2025 |  |  | 0 |  | 0 |  |  |
Scheduled maturities of long-term debt in 2026 |  |  | 0 |  | 0 |  |  |
Scheduled maturities of long-term debt, 2027 |  |  | 0 |  | 0 |  |  |
Scheduled maturities of long-term debt, 2028 |  |  | 354,000,000 |  | 354,000,000 |  |  |
Scheduled maturities of long-term debt, thereafter |  |  | $ 2,380,000,000 |  | $ 2,380,000,000 |  |  |
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument, covenant, total indebtedness to EBITDA ratio |  |  | 3.50 |  | 3.50 |  | 3.50 |

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