Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Sep. 30, 2023	Jun. 24, 2023	Apr. 30, 2021	Oct. 31, 2020	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of senior subordinated notes	$ 1,189,656	$ 1,188,203	$ 1,187,753
Senior notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of senior subordinated notes	$ 1,189,184	1,187,769	1,187,298
Senior notes \| Senior notes, interest at 4.125%, payable semi-annually, principal due April 2031
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, aggregate principal amount				$ 400,000
Interest rate	4.125%			4.125%
Estimated fair value of senior notes	$ 352,200	327,100	326,000
Carrying value of senior subordinated notes	$ 395,900	395,400	395,300
Senior notes \| Senior notes, interest at 4.125%, payable semi-annually, principal due October 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, aggregate principal amount					$ 500,000
Interest rate	4.125%				4.125%
Estimated fair value of senior notes	$ 445,700	417,000	413,800
Carrying value of senior subordinated notes	$ 495,000	494,400	494,200
Senior notes \| Senior notes, interest at 5.125%, payable semi-annually, principal due February 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, aggregate principal amount						$ 300,000
Interest rate	5.125%					5.125%
Estimated fair value of senior notes	$ 291,600	279,500	280,700
Carrying value of senior subordinated notes	$ 298,300	$ 298,000	$ 297,900