Debt (Tables)

12 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Schedule of Long-term Borrowing Obligations

As of September 30, 2021 and 2020, we had the following long-term borrowing obligations:

(in thousands)	September 30,
	2021			2020
4.000% Senior notes due 2028	$	500,000		$	500,000
3.625% Senior notes due 2025		500,000			500,000
Credit facility revolver(1)		450,000			18,000
Total debt		1,450,000			1,018,000
Unamortized debt issuance costs for the senior notes(2)		(10,529	)		(12,686	)
Total debt, net of issuance costs(3)	$	1,439,471		$	1,005,314

(1) Unamortized debt issuance costs related to the credit facility were $3.8 million and $4.9 million as of September 30, 2021 and 2020, respectively, and were included in other assets on the Consolidated Balance Sheets.

(2) Of the $14.1 million in financing costs incurred in connection with the issuance of the 2028 and 2025 notes, unamortized debt issuance costs were $10.5 million and $12.7 million as of September 30, 2021 and 2020, respectively, and were included in long-term debt on the Consolidated Balance Sheet.

(3) As of September 30, 2021, and 2020, all debt was classified as long term.