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Incentive Compensation Plans Stock-based Compensation Awards (Details)
shares in Millions
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Restricted stock (shares or units)  
Incentive Compensation Plans  
Granted awards 2.3
Weighted average grant date fair value | $ / shares $ 20.74
Performance-based stock (shares)  
Incentive Compensation Plans  
Granted awards 2.4
Weighted average grant date fair value | $ / shares $ 18.69
Total stock-based compensation awards  
Incentive Compensation Plans  
Granted awards 4.7