XML 40 R29.htm IDEA: XBRL DOCUMENT v3.21.1
Basis of presentation and significant accounting policies and practices - Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Basic EPS:    
Net income $ 1,753 $ 1,174
Income allocated to RSUs (8) (6)
Income allocated to common stock for basic EPS $ 1,745 $ 1,168
Weighted average number of shares outstanding, basic (in shares) 922 931
Basic (in dollars per share) $ 1.89 $ 1.25
Dilutive effect of stock compensation plans (in shares) 13 12
Diluted EPS:    
Net income $ 1,753 $ 1,174
Income allocated to RSUs (8) (6)
Income allocated to common stock for diluted EPS $ 1,745 $ 1,168
Weighted average number of shares outstanding, diluted (in shares) 935 943
Diluted (in dollars per share) $ 1.87 $ 1.24