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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 10 Months Ended
Sep. 01, 2018
Sep. 02, 2017
Sep. 01, 2018
Sep. 02, 2017
Dec. 31, 2017
Mar. 03, 2018
Income Taxes            
Federal statutory rate (as a percent)     21.00%   35.00%  
Income tax expense (benefit) $ (106,559) $ 117,450 $ (116,056) $ 105,329    
Estimated effective tax rate (as a percent) 23.20% 38.40% 22.80% 40.90%    
Increase in valuation allowance to offset the current year deferred state tax benefits (as a percent) (4.20%)   (3.90%)      
Decrease in unrecognized tax benefits related to state exposures     $ 13,498      
Valuation allowance against net deferred tax assets $ 920,059   $ 920,059     $ 896,800