Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Other Compensation Matters (Percentile Grant and Assumptions) (Details)

v3.20.4
Share-Based Compensation and Other Compensation Matters (Percentile Grant and Assumptions) (Details) - $ / shares
12 Months Ended
Jan. 01, 2020
Jan. 01, 2019
Jan. 01, 2018
Dec. 31, 2020
Performance-based PIUs        
Potential earned payout for defined levels of performance under awards        
Earned payout (as a percent of PSUs/ PIUs granted) on 75th or greater percentile rank       100.00%
Earned payout (as a percent of PSUs/ PIUs granted) on 50th percentile rank (target)       50.00%
Earned payout (as a percent of PSUs/ PIUs granted) on 25th percentile rank       25.00%
Performance share units/ PB PIUs granted on percentile rank below 25th (as a percent)       0.00%
Performance-based PIUs | 2019 PB PIU        
Assumptions used to value stock awards        
Grant date fair value (in dollars per share)   $ 12.47    
Baseline Common Share Value (in dollars per share)   $ 21.03    
Expected Volatility of Common Shares   21.00%    
Risk-free Interest Rate   2.51%    
Performance-based PIUs | 2020 PB PIU        
Assumptions used to value stock awards        
Grant date fair value (in dollars per share) $ 16.36      
Baseline Common Share Value (in dollars per share) $ 29.38      
Expected Volatility of Common Shares 18.00%      
Risk-free Interest Rate 1.65%      
Performance share units        
Potential earned payout for defined levels of performance under awards        
Earned payout (as a percent of PSUs/ PIUs granted) on 75th or greater percentile rank       200.00%
Earned payout (as a percent of PSUs/ PIUs granted) on 50th percentile rank (target)       100.00%
Earned payout (as a percent of PSUs/ PIUs granted) on 25th percentile rank       50.00%
Performance share units/ PB PIUs granted on percentile rank below 25th (as a percent)       0.00%
Performance share units | 2018 PSU Grants        
Assumptions used to value stock awards        
Grant date fair value (in dollars per share)     $ 31.97  
Baseline Common Share Value (in dollars per share)     $ 29.20  
Expected Volatility of Common Shares     17.00%  
Risk-free Interest Rate     2.04%