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Share-Based Compensation - Assumptions (Details)
12 Months Ended
Jan. 30, 2021
Feb. 01, 2020
Feb. 02, 2019
Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate 0.10% 2.00% 2.00%
Expected stock price volatility 145.90% 51.70% 59.10%
Expected dividend yield 1.40% 3.40% 4.60%
Expected life of options 3 months 3 months 3 months
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate 0.30% 2.30% 2.30%
Expected stock price volatility 91.60% 48.90% 46.10%
Expected dividend yield 5.10% 3.40% 4.30%
Expected life of options 4 years 3 months 18 days 4 years 4 months 24 days 4 years 4 months 24 days
Market-based units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate 0.20%   2.60%
Expected stock price volatility 62.80%   42.10%
Expected dividend yield 0.00%   0.00%
Expected life of options 2 years 7 months 6 days   2 years 7 months 6 days