Current and long-term obligations - Senior Notes (Details) - USD ($) $ in Thousands	Sep. 20, 2024	Nov. 01, 2024	Feb. 02, 2024	Jun. 07, 2023
5.200% Senior Notes due July 5, 2028
Current and long-term obligations
Amount borrowed				$ 500,000
Stated interest rate (as a percent)		5.20%	5.20%	5.20%
Discount on debt issuance		$ 105	$ 124	$ 100
Long-term obligations		$ 499,895	$ 499,876
5.450% Senior Notes due July 5, 2033
Current and long-term obligations
Amount borrowed				$ 1,000,000
Stated interest rate (as a percent)		5.45%	5.45%	5.45%
Discount on debt issuance		$ 1,428	$ 1,521	$ 1,600
Long-term obligations		$ 998,572	$ 998,479
4.250% Senior Notes due September 20, 2024
Current and long-term obligations
Amount borrowed	$ 750,000
Gain loss on redemption	$ 0
Stated interest rate (as a percent)	4.25%	4.25%	4.25%
Discount on debt issuance		$ 0	$ 230
Long-term obligations			$ 749,770
Senior Notes Due July 2028 And 2033
Current and long-term obligations
Debt issuance costs				$ 12,400