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Revenue - Change in Contract Liabilities (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 30, 2021
Feb. 01, 2020
Feb. 02, 2019
Contract With Customer, Contract Liabilities [Roll Forward]      
Contract liability beginning balance   $ 339.2 $ 376.9
Increase to contract liabilities $ 953.8 1,006.0  
Decrease to contract liabilities (950.0) (1,038.7)  
Other adjustments 5.2 (5.0)  
Contract liability ending balance 348.2 339.2  
Gift Cards Trade in Credits      
Contract With Customer, Contract Liabilities [Roll Forward]      
Revenue recognized $ 45.1 $ 55.4