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Debt - Credit Agreement (Details)	Apr. 19, 2024 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 25, 2021 USD ($)	Apr. 13, 2021 USD ($)	Feb. 08, 2021 USD ($)
New Term Loan B Facility | Base Rate
Debt agreements
Debt Instrument, Floor Rate	0.00%
Interest rate, basis spread (as a percent)	0.875%
New Term Loan B Facility | SOFR
Debt agreements
Debt Instrument, Floor Rate	0.00%
Debt Instrument, Spread Adjustment Rate	0.00%
Interest rate, basis spread (as a percent)	1.875%
New Revolving Credit Facility | Other Currency
Debt agreements
Interest rate, basis spread (as a percent)	1.225%
New Revolving Credit Facility | Base Rate | USD
Debt agreements
Debt Instrument, Floor Rate	0.00%
Interest rate, basis spread (as a percent)	0.25%
New Revolving Credit Facility | SOFR | USD
Debt agreements
Debt Instrument, Floor Rate	0.00%
Debt Instrument, Spread Adjustment Rate	0.10%
2014 Credit Agreement | Term loan A
Debt agreements
Maximum borrowing capacity				$ 215,000,000
Credit Agreement | SOFR | USD
Debt agreements
Interest rate, basis spread (as a percent)	1.225%
Credit Agreement | Maximum
Debt agreements
Consolidated leverage ratio						4.00
Credit Agreement | New Term Loan B Facility
Debt agreements
Maximum borrowing capacity	$ 700,000,000
Credit Agreement | New Term Loan A Facility
Debt agreements
Maximum borrowing capacity	750,000,000
Credit Agreement | Term loan A
Debt agreements
Maximum borrowing capacity						$ 246,968,737.50
Credit Agreement | Term B facility
Debt agreements
Maximum borrowing capacity					$ 700,000,000
Credit Agreement | Revolving credit facility
Debt agreements
Maximum borrowing capacity						$ 1,150,000,000
Outstanding letters of credit		$ 4,400,000	$ 4,400,000
Current borrowing capacity		$ 1,495,600,000	$ 1,145,600,000
Credit Agreement | New Revolving Credit Facility
Debt agreements
Maximum borrowing capacity	$ 1,500,000,000
2024 Senior Notes
Debt agreements
Cash tender offer to purchase					$ 700,000,000
Interest rate (as a percent)				5.875%	5.875%

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- Definition

The floor rate of debt instrument.

+ References

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- Definition

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

+ References

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- Definition

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

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

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- Definition

Indebtedness divided by net capital.

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