Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Incentive Equity Awards Activity) (Details)

v3.10.0.1
Stock-Based Compensation (Incentive Equity Awards Activity) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 7 Months Ended 12 Months Ended
May 17, 2018
Dec. 31, 2018
Dec. 31, 2018
Number of Options      
Beginning balance (in shares)   0.0  
Granted (in shares)   0.5  
Vested/exercised (in shares)   0.0  
Ending balance (in shares)   0.5 0.5
Weighted Average Grant Price      
Beginning balance (in dollars per share)   $ 0.00  
Granted (in dollars per share)   61.40  
Vested/exercised (in dollars per share)   0.00  
Ending balance (in dollars per share)   $ 61.40 $ 61.40
RSUs      
Number of RSUs      
Beginning balance (in shares)   0.0  
Granted (in shares) 0.5 0.5  
Vested/exercised/canceled (in shares)   0.0 (0.5)
Ending balance (in shares)   0.5 0.5
Weighted Average Grant Price      
Beginning balance (in dollars per share)   $ 0.00  
Granted (in dollars per share)   61.31  
Vested/exercised/canceled (in dollars per share)   0.00  
Ending balance (in dollars per share)   $ 61.31 $ 61.31
Weighted Average Grant Price      
Expected to vest (in shares)     27.0
Compensation expense not yet recognized, weighted average period     3 years 5 months
Options      
Number of RSUs      
Granted (in shares) 0.5    
Performance Shares      
Number of RSUs      
Beginning balance (in shares)     0.1
Granted (in shares)     0.0
Transferred from former Parent (in shares)     0.0
Vested/exercised/canceled (in shares)     (0.1)
Ending balance (in shares)   0.0 0.0
Weighted Average Grant Price      
Beginning balance (in dollars per share)     $ 60.80
Granted (in dollars per share)     0.00
Transferred from former Parent (in dollars per share)     0.00
Vested/exercised/canceled (in dollars per share)     60.80
Ending balance (in dollars per share)   $ 0.00 $ 0.00
Weighted Average Grant Price      
Aggregate unrecognized compensation expense   $ 5 $ 5
Compensation expense not yet recognized, weighted average period     3 years 5 months
RSUs, Granted Prior to 2018      
Number of RSUs      
Beginning balance (in shares)     0.3
Granted (in shares)     0.1
Transferred from former Parent (in shares)     0.2
Vested/exercised/canceled (in shares)     (0.4)
Ending balance (in shares)   0.1 0.1
Weighted Average Grant Price      
Beginning balance (in dollars per share)     $ 60.80
Granted (in dollars per share)     64.46
Transferred from former Parent (in dollars per share)     61.65
Vested/exercised/canceled (in dollars per share)     60.82
Ending balance (in dollars per share)   $ 64.46 $ 64.46
Weighted Average Grant Price      
Expected to vest (in shares)     0.1
Aggregate unrecognized compensation expense   $ 4 $ 4
Compensation expense not yet recognized, weighted average period     6 months
Performance-based Stock Units, Granted Prior to 2018 [Member]      
Number of RSUs      
Vested/exercised/canceled (in shares)     (0.1)