XML 52 R42.htm IDEA: XBRL DOCUMENT v3.22.2
Share-Based Compensation - Additional Information (Detail)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Nov. 30, 2020
d
$ / shares
Jun. 30, 2022
USD ($)
shares
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
Target
shares
Jun. 30, 2021
USD ($)
Dec. 31, 2021
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Common stock, authorized shares   6,000,000,000   6,000,000,000   6,000,000,000
Compensation expense | $   $ 5 $ 4 $ 9 $ 10  
Unrecognized compensation costs related to unvested awards | $   $ 25   $ 25    
Unrecognized compensation costs related to unvested awards, weighted-average period       1 year 8 months 12 days    
Total fair value of shares vested | $       $ 7 $ 17  
2017 Employee Plan [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Shares of common stock reserved for future issuance   2,313,502   2,313,502    
2017 Employee Plan [Member] | Maximum [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Common stock, authorized shares   8,000,000   8,000,000    
2017 Director Plan [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Shares of common stock reserved for future issuance   418,645   418,645    
2017 Director Plan [Member] | Maximum [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Common stock, authorized shares   950,000   950,000    
Performance Stock Units ("PSUs") [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award performance period       3 years    
Market capitalization | $   $ 1,000   $ 1,000    
Vesting rights       zero to 200    
Performance Stock Units ("PSUs") [Member] | Special Awards [Member] | Eight Share Price Targets [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Vesting rights One-eighth          
Consecutive trading day period | d 20          
PSUs remaining performance period forfeited 4 years          
Share price target achieved | Target       6    
Total share price targets | Target       8    
Percentage of awards granted vested       75.00%    
Performance Stock Units ("PSUs") [Member] | Maximum [Member] | Special Awards [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Vesting rights       200    
Average closing sales price per share, | $ / shares $ 25.00          
Performance Stock Units ("PSUs") [Member] | Minimum [Member] | Special Awards [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Average closing sales price per share, | $ / shares $ 11.00