Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 30, 2023	Sep. 30, 2023	Dec. 31, 2022	Oct. 01, 2022	Dec. 30, 2023	Dec. 31, 2022
Numerator:
Net income	$ 117,931	$ 209,268	$ 243,886	$ 184,261	$ 327,199	$ 428,147
Denominator:
Weighted average common shares for basic earnings per share	90,253		91,192		90,874	92,621
Net effect of dilutive stock based compensation awards	1,539		1,563		1,611	1,574
Weighted average common shares for diluted earnings per share	91,792		92,755		92,485	94,195
Basic earnings per share	$ 1.31		$ 2.67		$ 3.60	$ 4.62
Diluted earnings per share	$ 1.28		$ 2.63		$ 3.54	$ 4.55
Stock Options
Denominator:
antidilutive Securities	122		174		122	174