Share-based payments (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Feb. 02, 2024	Feb. 03, 2023	Jan. 28, 2022
Share-based payments
Number of shares of common stock authorized for grant	11,838,143
Share-based compensation expense
Pre-tax	$ 51,891	$ 72,671	$ 78,178
Net of tax	40,683	$ 56,334	$ 57,774
Total unrecognized compensation cost	$ 69,600
Expected weighted average expense recognition period (in years)	2 years
Employees
Share-based payments
Vesting period	4 years
Board members
Share-based payments
Vesting period	1 year
Stock options
Weighted average for key assumptions used in determining the fair value
Expected dividend yield (as a percent)	1.50%	1.00%	0.90%
Expected stock price volatility (as a percent)	27.70%	25.40%	26.50%
Weighted average risk-free interest rate (as a percent)	4.10%	2.40%	0.80%
Expected term of options	4 years 8 months 12 days	4 years 9 months 18 days	4 years 10 months 24 days
Options Issued
Balance at the beginning of the period (in shares)	2,522,296
Granted (in shares)	812,715
Exercise of share-based awards (in shares)	(350,240)
Canceled (in shares)	(571,129)
Balance, at the end of the period (in shares)	2,413,642	2,522,296
Exercisable at the end of the period (in shares)	1,065,948
Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 162.58
Granted (in dollars per share)	170.94
Exercised (in dollars per share)	97.45
Canceled (in dollars per share)	207.54
Balance at the end of the period (in dollars per share)	164.21	$ 162.58
Exercisable at the end of the period (in dollars per share)	$ 141.49
Remaining Contractual Term
Balance, at the end of the period	6 years 8 months 12 days
Exercisable at the end of the period	4 years 10 months 24 days
Intrinsic Value
Balance at the end of the period	$ 26,616
Exercisable at the end of the period	$ 21,259
Weighted average grant date fair value (in dollars per share)	$ 44.97	$ 52.06	$ 42.89
Intrinsic value of options exercised	$ 19,000	$ 62,700	$ 132,300
Share-based compensation expense
Pre-tax	19,400	20,502	21,452
Net of tax	$ 15,210	$ 15,893	$ 15,853
Performance Stock Units
Share-based payments
Vesting period	3 years
Weighted average grant date fair value of awards issued (in dollars per share)	$ 208.13	$ 214.25	$ 193.55
Intrinsic Value
Balance at the end of the period	$ 23,714
Units Issued
Awards outstanding at the beginning of the period (in shares or rights)	314,897
Granted (in shares or rights)	115,197
Converted to common stock (in shares or rights)	(175,476)
Canceled (in shares or rights)	(80,458)
Awards outstanding at the end of the period (in shares or rights)	174,160	314,897
Share-based compensation expense
Pre-tax	$ 1,732	$ 26,920	$ 33,234
Net of tax	$ 1,358	$ 20,868	$ 24,560
Performance Stock Units | Minimum
Share-based payments
Performance period	1 year
Performance Stock Units | Less than
Share-based payments
Performance period	3 years
Restricted Stock Units
Share-based payments
Weighted average grant date fair value of awards issued (in dollars per share)	$ 193.78	$ 223.51	$ 193.76
Intrinsic Value
Balance at the end of the period	$ 50,442
Units Issued
Awards outstanding at the beginning of the period (in shares or rights)	337,249
Granted (in shares or rights)	221,734
Converted to common stock (in shares or rights)	(140,507)
Canceled (in shares or rights)	(48,013)
Awards outstanding at the end of the period (in shares or rights)	370,463	337,249
Share-based compensation expense
Pre-tax	$ 30,759	$ 25,249	$ 23,492
Net of tax	$ 24,115	$ 19,573	$ 17,361
Restricted Stock Units | Employees
Share-based payments
Vesting period	3 years