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Stock Based Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Nonvested Performance Share Unit Awards and Restricted Share Unit Awards - Rollforward
A rollforward of the nonvested performance share unit and restricted share unit awards follows:
Table 100: Nonvested Performance Share Unit Awards and Restricted Share Unit Awards - Rollforward
Shares in thousandsNonvested Performance Share UnitsWeighted-Average Grant Date Fair ValueNonvested Restricted Share UnitsWeighted-Average Grant Date Fair Value
December 31, 2022 (a)685 $161.20 3,348 $172.40 
Granted (b)182 $147.85 1,683 $155.67 
Vested/Released (b)(221)$137.67 (1,170)$156.89 
Forfeitures (99)$171.03 
December 31, 2023646 $165.48 3,762 $169.79 
(a)Includes 170 performance share units with market conditions.
(b)Includes adjustments for achieving specific performance goals for performance share unit awards granted in prior periods.