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Shareholders' Equity - (Retirement of Treasury Stock and Issuance and Sale of Common Stock) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Jul. 06, 2020
Jul. 01, 2020
Dec. 30, 2020
Dec. 25, 2019
Equity [Abstract]        
Retirement of shares (in shares)     54,000,000.0  
Weighted average share price (in dollars per share)     $ 10.26  
Number of shares sold (in shares)   8,000,000    
Common stock, par value (in dollars per share)   $ 0.01 $ 0.01 $ 0.01
Price per share (in dollars per share)   $ 9.15    
Proceeds from sale of stock $ 69.6