v3.26.1
Fair Value Measurements and Derivative Instruments (Tables)
 6 Months Ended
Mar. 31, 2026
Derivative Instruments Gain Loss [Line Items]  
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables summarize the financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2026 and September 30, 2025:

 

 

 

March 31, 2026

 

 

 

Carrying Value

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

Other current assets:

 

 

 

 

 

 

 

 

 

 

 

 

Fuel derivative contracts

 

$

1.7

 

 

$

—

 

 

$

1.7

 

 

$

—

 

Other assets:

 

 

 

 

 

 

 

 

 

 

 

 

Investments held by Rabbi Trust

 

 

8.0

 

 

 

8.0

 

 

 

—

 

 

 

—

 

Interest rate derivative contracts

 

 

1.3

 

 

 

—

 

 

 

1.3

 

 

 

—

 

Total assets

 

$

11.0

 

 

$

8.0

 

 

$

3.0

 

 

$

—

 

Other liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

Obligation to Rabbi Trust

 

$

8.0

 

 

$

8.0

 

 

$

—

 

 

$

—

 

Total liabilities

 

$

8.0

 

 

$

8.0

 

 

$

—

 

 

$

—

 

 

 

 

 

September 30, 2025

 

 

 

Carrying Value

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

Other assets:

 

 

 

 

 

 

 

 

 

 

 

 

Investments held by Rabbi Trust

 

$

7.9

 

 

$

7.9

 

 

$

—

 

 

$

—

 

Total assets

 

$

7.9

 

 

$

7.9

 

 

$

—

 

 

$

—

 

Accrued expenses and other current liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

Fuel derivative contracts

 

$

0.1

 

 

$

—

 

 

$

0.1

 

 

$

—

 

Other liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

Interest rate derivative contracts

 

 

1.5

 

 

 

—

 

 

 

1.5

 

 

 

—

 

Obligation to Rabbi Trust

 

 

7.9

 

 

 

7.9

 

 

 

—

 

 

 

—

 

Total liabilities

 

$

9.5

 

 

$

7.9

 

 

$

1.6

 

 

$

—

 
Interest Rate Contracts  
Derivative Instruments Gain Loss [Line Items]  
Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges

The effects on the consolidated financial statements of the interest rate contracts which were designated as cash flow hedges were as follows:

 

 

 

Three Months Ended
March 31,

 

 

Six Months Ended
March 31,

 

 

 

2026

 

 

2025

 

 

2026

 

 

2025

 

Income (loss) recognized in Other comprehensive income (loss)

 

$

3.5

 

 

$

(5.1

)

 

$

3.8

 

 

$

8.0

 

Net income reclassified from Accumulated other comprehensive income (loss) into Interest expense

 

 

0.5

 

 

 

1.3

 

 

 

1.3

 

 

 

3.3

 
Fuel Swap Contracts  
Derivative Instruments Gain Loss [Line Items]  
Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges

The effects on the consolidated financial statements of the fuel swap contracts which were designated as cash flow hedges were as follows:

 

 

 

Three Months Ended
March 31,

 

 

Six Months Ended
March 31,

 

 

 

2026

 

 

2025

 

 

2026

 

 

2025

 

Income recognized in Other comprehensive income (loss)

 

$

2.1

 

 

$

—

 

 

$

1.6

 

 

$

—

 

Net (loss) reclassified from Accumulated other comprehensive income (loss) into Cost of services provided

 

 

—

 

 

 

(0.2

)

 

 

(0.2

)

 

 

(0.5

)