Annual report pursuant to Section 13 and 15(d)

Income taxes - Reconciliation of Federal Statutory Rate to Effective Tax Rate (Details)

v3.8.0.1
Income taxes - Reconciliation of Federal Statutory Rate to Effective Tax Rate (Details)
1 Months Ended 12 Months Ended
Feb. 03, 2018
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Reconciliation of federal statutory rate to effective tax rate        
Federal statutory rate (as a percent) 21.00% 33.70% 35.00% 35.00%
State effective rate, net of federal tax benefit (as a percent)   2.40% 2.80% 2.20%
Re-measurement of deferred tax liabilities (as a percent)   (4.90%) 0.00% 0.00%
Excess deduction of stock compensation (as a percent)   (1.20%) (0.00%) (0.00%)
Other (as a percent)   (0.60%) (0.30%) (0.30%)
Effective tax rate (as a percent)   29.40% 37.50% 36.90%