XML 73 R55.htm IDEA: XBRL DOCUMENT v3.22.4
Share-Based Compensation Plans - Summary of Restricted Stock Activity (Details) - Restricted Stock - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Shares        
Unvested at beginning of period (in shares) 545,000 484,000 446,000  
Granted (in shares) 245 208,000 200,000  
Vested (in shares) (177) (124,000) (145,000)  
Forfeited (in shares) (25) (23,000) (17,000)  
Unvested at end of period (in shares) 588,000 545,000 484,000 446,000
Wtd. Avg. Price Per Share        
Unvested at beginning of period (in dollars per share) $ 85 $ 94 $ 97  
Granted (in dollars per share) 104 87 92  
Vested (in dollars per share) 80 106 95  
Forfeited (in dollars per share) 88 84 93  
Unvested at end of period (in dollars per share) $ 94 $ 85 $ 94 $ 97
Equity Other Than Options, Additional [Abstract]        
Unvested (in years) 1 year 4 months 24 days 1 year 3 months 18 days 1 year 4 months 24 days 1 year 6 months
Unvested, aggregate intrinsic value $ 49