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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
(dollars in millions, except per share amounts; shares in millions)201920182017
Net income attributable to common shareowners$5,537  $5,269  $4,552  
Basic weighted average number of shares outstanding854.8  800.4  790.0  
Stock awards and equity units (share equivalent)9.1  9.7  9.1  
Diluted weighted average number of shares outstanding863.9  810.1  799.1  
Earnings Per Share of Common Stock:
Basic$6.48  $6.58  $5.76  
Diluted$6.41  $6.50  $5.70