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Share-Based Compensation - Performance Share Units (Details) - Performance Share Units - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Jan. 02, 2021
Jan. 04, 2020
Dec. 29, 2018
Share-Based Compensation      
Performance share units measurement period 3 years    
Number of Units      
Outstanding at beginning of period, nonvested (in shares) 411    
Granted (in shares) 276    
Vested (in shares) (173)    
Outstanding at end of period, nonvested (in shares) 514 411  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Outstanding at beginning of period, nonvested (in dollars per share) $ 56.03    
Granted (in dollars per share) 40.60    
Vested (in dollars per share) (58.24)    
Outstanding at end of period, nonvested (in dollars per share) $ 47.02 $ 56.03  
Fair value      
Fair value of awards vested $ 8 $ 9 $ 12
Cash paid $ 7 $ 10 $ 11