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Stock-Based Compensation (Unvested Restricted Stock Activity) (Details) - Restricted stock
shares in Thousands
3 Months Ended
May 02, 2020
$ / shares
shares
Number of shares  
Beginning balance (in shares) | shares 4,394
Awarded (in shares) | shares 592
Released (in shares) | shares (891)
Forfeited (in shares) | shares (7)
Ending balance (in shares) | shares 4,088
Weighted-average grant date fair value  
Beginning Balance (in dollars per share) | $ / shares $ 76.20
Awarded (in dollars per share) | $ / shares 97.85
Released (in dollars per share) | $ / shares 61.03
Forfeited (in dollars per share) | $ / shares 79.37
Ending Balance (in dollars per share) | $ / shares $ 82.63