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Share-Based Incentive Compensation (Table)
 6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Information for fully vested stock option awards [Table Text Block]
The following information relates to fully vested stock option awards at June 30, 2021:
 
                                           Stock OptionsNumberWeighted
Average
Exercise
Price		Weighted
Average
Contractual
Life
Remaining		Aggregate
Intrinsic
Value
($ in millions)
Vested at end of period (1)
7,604,850 $123.90 6.4 years$196 
Exercisable at end of period4,401,105 $117.65 4.9 years$141 
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(1)Represents awards for which the requisite service has been rendered, including those that are retirement eligible.