Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended			72 Months Ended
	May 17, 2017	Jan. 31, 2026	Jan. 31, 2026	Feb. 01, 2025	Feb. 03, 2024	Jan. 31, 2026
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit related to stock-based compensation			$ 28,200	$ 29,600	$ 29,600
2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial share reserve (in shares)	12,000,000.0
2008 and 2017 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential share increase for equity plan (in shares)	5,500,000
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized compensation expense		$ 209,900	$ 209,900	$ 229,300		$ 209,900
Weighted average remaining period of unrecognized compensation expense			1 year 6 months	1 year 8 months 12 days
Intrinsic value per share, end of period (in dollars per share)		$ 188.65	$ 188.65			$ 188.65
Intrinsic value, end of period		$ 719,500	$ 719,500			$ 719,500
Restricted stock | 2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for new restricted stock awards (in shares)		6,800,000	6,800,000	7,300,000	7,800,000	6,800,000
Restricted stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			5 years
Restricted stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period			3 years
PRSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value			$ 6,900
Awarded (in shares)				51,164
Awarded (in dollars per share)		$ 135.83
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan participant's annual percentage ceiling for ESPP (in percentage)		10.00%	10.00%			10.00%
Plan participant's annual dollar amount ceiling for ESPP			$ 25
Purchase price for shares under ESPP (in percentage)			85.00%
Discount rate under the ESPP (in percentage)			15.00%
Shares purchased by employees (in shares)			200,000	200,000	300,000
Shares purchased by employees, average price per share (in dollars per share)		$ 122.71	$ 122.71	$ 126.18	$ 98.86	$ 122.71
Shares issued under plan (in shares)						41,700,000
Shares remaining for future issuance (in shares)		3,300,000	3,300,000			3,300,000