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Stockholders' Equity (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Mar. 28, 2019
Mar. 27, 2019
Dec. 31, 2018
Restricted Stock Units (RSUs)          
Shares Activity [Line Items]          
Weighted average period of unrecognized compensation costs 1 year        
Granted (in shares) 4,967 6,067     0
Performance Shares          
Shares Activity [Line Items]          
Weighted average period of unrecognized compensation costs 1 year 9 months 18 days        
Granted (in shares) 122,242 125,194     0
Grant date fair value of awards $ 5        
Unrecognized compensation costs $ 4        
Minimum | Performance Shares          
Shares Activity [Line Items]          
Granted (in shares) 0        
Maximum | Performance Shares          
Shares Activity [Line Items]          
Granted (in shares) 225,400        
Omnibus Employee Incentive Plan 2016          
Shares Activity [Line Items]          
Number of shares authorized (in shares)     1,500,000 500,000  
2019 Short Term Incentive Plan | Restricted Stock Units (RSUs)          
Shares Activity [Line Items]          
Cash component of an incentive award 75.00%        
Stock component of an incentive award 25.00%        
Share-based payment award performance period 1 year        
Vesting period 2 years        
Weighted average period of unrecognized compensation costs 1 year 6 months        
Weighted average grant date fair value of nonvested awards $ 1        
Granted (in shares) 55,661 0      
2019 Short Term Incentive Plan | Tranche 1 | Restricted Stock Units (RSUs)          
Shares Activity [Line Items]          
Vesting percentage 50.00%        
2019 Short Term Incentive Plan | Tranche 2 | Restricted Stock Units (RSUs)          
Shares Activity [Line Items]          
Vesting percentage 50.00%        
2019 Long Term Incentive Plan          
Shares Activity [Line Items]          
Share-based payment award performance period 3 years