XML 110 R93.htm IDEA: XBRL DOCUMENT v3.22.0.1
Equity - Performance shares (Details)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
item
$ / shares
shares
Dec. 31, 2020
USD ($)
item
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
Share-based compensation        
Share-based payments subject to redemption $ 36 $ 30 $ 31 $ 37
Performance Shares        
Share-based compensation        
Vesting terms     3 years  
Number of tranches | item 2 2    
Granted (in shares) | shares 108 81 70  
Weighted-average fair value per share, Granted (in dollars per share) | $ / shares $ 100.29 $ 94.48 $ 92.57  
Cancelled (in shares) | shares 27      
Unrecognized compensation cost $ 7      
Remaining requisite service period (in years) 1 year 10 months 24 days      
Share-based payments subject to redemption $ 11 $ 7    
Performance shares, vesting based on TSR        
Share-based compensation        
Vesting terms 3 years      
Percentage of share-based compensation award 50.00% 50.00%    
Performance shares calculation period (in years) 3 years      
Performance shares, vesting based on TSR | Minimum        
Share-based compensation        
Performance shares available for vesting (as a percent) 100.00%      
Performance shares, vesting based on TSR | Maximum        
Share-based compensation        
Performance shares available for vesting (as a percent) 200.00%      
Performance shares, vesting based on Adjusted ROIC        
Share-based compensation        
Vesting terms 3 years      
Percentage of share-based compensation award 50.00% 50.00%    
Performance shares calculation period (in years) 3 years 3 years    
Performance shares, vesting based on Adjusted ROIC | Minimum        
Share-based compensation        
Performance shares available for vesting (as a percent) 0.00%      
Performance shares, vesting based on Adjusted ROIC | Maximum        
Share-based compensation        
Performance shares available for vesting (as a percent) 200.00%      
2018 Awards | Performance Shares        
Share-based compensation        
Award pay out achieved (as a percent) 0.00%      
2019 Awards | Performance Shares        
Share-based compensation        
Estimated pay out (as a percent) 0.00%      
2021 Awards | Performance Shares        
Share-based compensation        
Number of award segments | item 2      
2021 Award, Segment Two | Performance shares, vesting based on Adjusted ROIC        
Share-based compensation        
Percentage of share-based compensation award 100.00%