v3.20.4
Earnings (Loss) Per Common Share (Computation Of Basic And Diluted Earnings (Loss) Per Common Share) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Numerator:      
Income from continuing operations $ 1,094 $ 1,582 $ 1,568
Preferred stock dividends (103) (79) (64)
Net Income from Continuing Operations Available to Common Shareholders, Basic 991 1,503 1,504
Income from discontinued operations, net of tax 0 0 191
Net income available to common shareholders $ 991 $ 1,503 $ 1,695
Denominator:      
Weighted-average common shares outstanding—basic 959 995 1,092
Potential common shares 3 4 10
Weighted-average common shares outstanding—diluted 962 999 1,102
Earnings per common share from continuing operations:      
Basic $ 1.03 $ 1.51 $ 1.38
Diluted 1.03 1.50 1.36
Earnings (loss) per common share from discontinued operations:      
Basic 0.00 0.00 0.18
Diluted 0.00 0.00 0.17
Earnings per common share:      
Basic 1.03 1.51 1.55
Diluted $ 1.03 $ 1.50 $ 1.54
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 7 7 6