Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Stock-Based Compensation (Incentive Equity Awards Activity) (Details)
$ / shares in Units, shares in Millions, $ in Millions
6 Months Ended
Jun. 30, 2019
USD ($)
$ / shares
shares
Weighted Average Grant Price  
Ending balance (in dollars per share) | $ / shares $ 10.46
Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unvested options outstanding | shares 0.9
Unvested options weighted average exercise price (in dollars per share) | $ / shares $ 56.26
Options exercisable | shares 0.1
Aggregate unrecognized compensation expense | $ $ 9
Number of Options  
Beginning balance (in shares) | shares 0.5
Granted (in shares) | shares 0.5
Ending balance (in shares) | shares 1.0
Weighted Average Exercise Price  
Beginning balance (in dollars per share) | $ / shares $ 61.40
Granted (in dollars per share) | $ / shares 52.44
Ending balance (in dollars per share) | $ / shares $ 56.93
Compensation expense not yet recognized, weighted average period 3 years 4 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ $ 2
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 7 years 4 months
RSUs  
Number of RSUs  
Beginning balance (in shares) | shares 0.5
Granted (in shares) | shares 0.5
Vested/exercised (in shares) | shares (0.1)
Canceled (in shares) | shares (0.1)
Ending balance (in shares) | shares 0.8
Weighted Average Grant Price  
Beginning balance (in dollars per share) | $ / shares $ 61.31
Granted (in dollars per share) | $ / shares 52.44
Vested/exercised (in dollars per share) | $ / shares 61.30
Canceled (in dollars per share) | $ / shares 58.81
Ending balance (in dollars per share) | $ / shares $ 55.90
Weighted Average Exercise Price  
Aggregate unrecognized compensation expense | $ $ 45
Compensation expense not yet recognized, weighted average period 3 years 3 months
Performance Shares  
Number of RSUs  
Beginning balance (in shares) | shares 0.0
Granted (in shares) | shares 0.1
Ending balance (in shares) | shares 0.1
Weighted Average Grant Price  
Beginning balance (in dollars per share) | $ / shares $ 0
Granted (in dollars per share) | $ / shares 52.44
Ending balance (in dollars per share) | $ / shares $ 52.44
Weighted Average Exercise Price  
Aggregate unrecognized compensation expense | $ $ 5
Compensation expense not yet recognized, weighted average period 2 years 9 months