Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Accounting Change for Income Tax Effects of Stock Compensation (Details)

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Summary of Significant Accounting Policies - Accounting Change for Income Tax Effects of Stock Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 28, 2017
Oct. 29, 2016
Oct. 28, 2017
Oct. 29, 2016
Item effected        
Effect on provision for income tax $ 58,338 $ 52,310 $ 185,020 $ 161,826
ASU 2016 09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting        
Item effected        
Effect on provision for income tax $ (781)   $ (9,921)