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No definition available.

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- Definition

Interest Rate Payable Period

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of the required periodic payments applied to principal.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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Borrowings - Schedule of Long-term Debt (Details) £ in Thousands, $ in Thousands		9 Months Ended		12 Months Ended
	Feb. 16, 2023	Jun. 30, 2023 USD ($)	Jun. 30, 2023 GBP (£)	Sep. 30, 2022 USD ($)
Debt Instrument [Line Items]
Long-term debt		$ 3,145,529		$ 3,357,256
Less: Current Portion		(55,743)		(50,415)
Less: Deferred Financing Fees		(8,687)		(3,466)
2021 Term Loan Facility - USD Portion
Debt Instrument [Line Items]
Long-term debt		$ 200,000		$ 200,000
2021 Term Loan Facility - USD Portion \| SONIA Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		6.50%	6.50%
2021 Term Loan Facility - USD Portion \| SONIA Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.975%	0.975%
2021 Term Loan Facility - USD Portion \| SONIA Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.725%	1.725%
2021 Term Loan Facility - USD Portion \| LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				4.06%
2021 Term Loan Facility - USD Portion \| Base Interest Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.00%	0.00%
2021 Term Loan Facility - USD Portion \| Base Interest Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.625%	0.625%
2021 Term Loan Facility - GBP Portion
Debt Instrument [Line Items]
Long-term debt		$ 826,280		$ 723,580
2021 Term Loan Facility - GBP Portion \| SONIA Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.908%	0.908%
2021 Term Loan Facility - GBP Portion \| SONIA Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.658%	1.658%
2021 Term Loan Facility - GBP Portion \| Eurocurrency Interest Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		6.21%	6.21%	3.60%
2020 Term Loan Facility
Debt Instrument [Line Items]
Long-term debt		$ 877,532		$ 882,263
Quarterly principal payment, percent of aggregate borrowings		1.25%
Quarterly principal payment		$ 9,125	£ 3,125
2020 Term Loan Facility \| SONIA Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		6.45%	6.45%
2020 Term Loan Facility \| SONIA Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.975%	0.975%
2020 Term Loan Facility \| SONIA Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.725%	1.725%
2020 Term Loan Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				4.49%
2020 Term Loan Facility \| Base Interest Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.00%	0.00%
2020 Term Loan Facility \| Base Interest Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.625%	0.625%
2020 Term Loan Facility \| Eurocurrency Interest Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		6.21%	6.21%	3.60%
Bonds, Sustainability-Linked \| Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 500,000		$ 0
Interest rate	5.90%	5.90%
Interest rate, increase (decrease) over period	0.35%
Bonds, Sustainability-Linked \| Senior Notes \| First Step Up Date
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		6.025%	6.025%
Interest rate, increase (decrease) over period		0.125%	0.125%
Interest rate payable period		15 days	15 days
Bonds, Sustainability-Linked \| Senior Notes \| Second Step Up Date
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		6.15%	6.15%
Interest rate, increase (decrease) over period		0.125%	0.125%
Interest rate payable period		15 days	15 days
Senior Notes, Series A
Debt Instrument [Line Items]
Long-term debt		$ 0		190,000
Interest rate		4.27%
Senior Notes, Series B
Debt Instrument [Line Items]
Long-term debt		$ 0		180,000
Interest rate		4.42%
Senior Notes, Series C
Debt Instrument [Line Items]
Long-term debt		$ 0		130,000
Interest rate		4.52%
2020 Term Loan Facility, Denominated in GDP \| SONIA Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.908%	0.908%
2020 Term Loan Facility, Denominated in GDP \| SONIA Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.658%	1.658%
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt		$ 806,147		$ 1,105,294
Revolving Credit Facility \| SONIA Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		6.49%	6.49%
Revolving Credit Facility \| SONIA Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.975%	0.975%
Revolving Credit Facility \| SONIA Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.725%	1.725%
Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				4.08%
Revolving Credit Facility \| Base Interest Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.00%	0.00%
Revolving Credit Facility \| Base Interest Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.625%	0.625%
Revolving Credit Facility \| Eurocurrency Interest Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.908%	0.908%
Revolving Credit Facility \| Eurocurrency Interest Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.658%	1.658%