v3.25.4

Long-Term Debt - Credit Agreement (Details) $ in Millions	3 Months Ended
	Dec. 31, 2025 USD ($)	Sep. 30, 2025 USD ($)
Debt Instrument
Debt Covenant, Leverage Ratio	4.25
Revolving Credit Facility
Debt Instrument
Line of Credit Facility, Current Borrowing Capacity	$ 1,000.0
Proceeds from Lines of Credit	185.0
Repayments of Lines of Credit	195.0
Long-term Debt	430.0	$ 440.0
Letters of Credit Outstanding, Amount	24.1	22.3
Line of Credit Facility, Remaining Borrowing Capacity	$ 545.9	$ 537.7
Line of Credit Facility, Interest Rate at Period End	5.66%	5.83%
Debt Covenant, Maximum Undischarged Judgments	$ 125.0
Revolving Credit Facility | High-End Ratio
Debt Instrument
Debt Covenant, Leverage Ratio	3.00
Revolving Credit Facility | Low-End Ratio
Debt Instrument
Debt Covenant, Leverage Ratio	1.50
Revolving Credit Facility | Maximum
Debt Instrument
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
Revolving Credit Facility | Minimum
Debt Instrument
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Revolving Credit Facility | NYFRB
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	0.50%
Revolving Credit Facility | One-Month adjusted term SOFR
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	1.00%
Revolving Credit Facility | Base Rate | Maximum
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	1.00%
Revolving Credit Facility | Base Rate | Median
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	0.75%
Revolving Credit Facility | Base Rate | Minimum
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	0.50%
Revolving Credit Facility | Adjusted term SOFR | Maximum
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	2.00%
Revolving Credit Facility | Adjusted term SOFR | Median
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	1.75%
Revolving Credit Facility | Adjusted term SOFR | Minimum
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	1.50%
Letter of Credit
Debt Instrument
Line of Credit Facility, Current Borrowing Capacity	$ 75.0

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