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Share-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Feb. 24, 2023
Feb. 25, 2022
Feb. 26, 2021
Share-Based Payment Arrangement [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 4,173,814    
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Nonvested, Number 4,353,499    
2023 PSU's      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 428,700    
2022 PSU's      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 448,300    
2021 PSU's      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 529,500    
Director Share-Based Compensation [Member]      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 109,090 61,360 64,107
Restricted Stock Units (RSUs) [Member]      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 3,293,268 3,445,438  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 10.63 $ 13.08 $ 9.49
Performance and restricted stock units expense (credit) $ 17.6 $ 13.7 $ 12.4
Share-based Payment Arrangement, Expense, Tax Benefit $ 4.4 $ 3.5 3.1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 12.11 $ 11.86  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1,241,599    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (1,309,344)    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value $ 10.05    
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options $ 13.3    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 10.1 $ 10.1 10.7
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (84,425)    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value $ 12.48    
Performance Shares [Member]      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 1,060,231 1,205,833  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value $ 5.2 $ 4.8 2.3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 11.13    
Performance and restricted stock units expense (credit) $ 3.2 1.6 7.7
Share-based Payment Arrangement, Expense, Tax Benefit $ 0.8 $ 0.4 2.0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 13.11 $ 14.21  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1,125,192    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (1,270,794)    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value $ 12.40    
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options $ 1.2    
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition 1 year 4 months 24 days    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 2.1 $ 2.5 $ 6.4
Performance Shares [Member] | 2023 PSU's      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 11.13    
Performance Shares [Member] | 2023 PSU's | Tranche 1      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate [1] 2.60%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate [2] 52.20%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 3 years    
Performance Shares [Member] | 2022 PSU's      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 14.38  
Performance Shares [Member] | 2022 PSU's | Tranche 1      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate [1] 0.30%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate [2] 53.50%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 3 years    
Performance Shares [Member] | 2022 PSU's | Tranche 2      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate [1] 2.30%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate [2] 43.80%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 2 years    
Performance Shares [Member] | 2021 PSU's      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value     $ 13.29
Performance Shares [Member] | 2021 PSU's | Tranche 1      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate [1] 0.20%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate [2] 58.10%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 2 years    
Performance Shares [Member] | 2021 PSU's | Tranche 2      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate [1] 0.20%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate [2] 61.30%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 2 years    
Performance Shares [Member] | 2021 PSU's | Tranche 3      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate [1] 1.60%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate [2] 28.70%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 1 year    
Restricted Stock [Member]      
Share-Based Compensation Details [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition 1 year 4 months 24 days    
Director Share-Based Compensation [Member]      
Share-Based Compensation Details [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 9.67 $ 13.81 $ 12.21
Maximum [Member]      
Share-Based Compensation Details [Line Items]      
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Earned [3] 1,060,231    
Minimum [Member]      
Share-Based Compensation Details [Line Items]      
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Earned 0    
[1] Based on the U.S. Government bond benchmark on the grant date.
[2] Represents the historical price volatility of our Company’s Class A Common Stock for the three-year period preceding the grant date.
[3] This amount includes the maximum number of shares that may be issued under outstanding performance unit awards; however, the actual number of shares which may be issued will be determined based on the satisfaction of certain conditions, and therefore may be significantly lower.