v3.21.1
CONSOLIDATED STATEMENT OF EQUITY - USD ($)
$ in Millions
Total IBM Stockholders' Equity
Cumulative Effect, Period of Adoption, Adjustment
 [1]
Total IBM Stockholders' Equity
Common Stock and Additional Paid-in Capital
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
 [1]
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income/(Loss)
Non-Controlling Interests
Cumulative Effect, Period of Adoption, Adjustment
 [1]
Total
Balance at the Beginning of the Period at Dec. 31, 2019 $ (66) $ 20,841 $ 55,895 $ (66) $ 162,954 $ (169,413) $ (28,597) $ 144 $ (66) $ 20,985
Net income plus other comprehensive income/(loss):                    
Net income   1,175     1,175         1,175
Other comprehensive income/(loss)   (686)         (686)     (686)
Total comprehensive income/(loss)   489               489
Cash dividends paid - common stock   (1,440)     (1,440)         (1,440)
Common stock issued under employee plans   197 197             197
Purchases and sales of treasury stock under employee plans - net   (21)     3 (24)       (21)
Changes in noncontrolling interests               (15)   (15)
Balance at the End of the Period at Mar. 31, 2020   19,999 56,092   162,626 (169,437) (29,283) 129   20,128
Balance at the Beginning of the Period at Dec. 31, 2020   20,597 56,556   162,717 (169,339) (29,337) 129   20,727
Net income plus other comprehensive income/(loss):                    
Net income   955     955         955
Other comprehensive income/(loss)   1,080         1,080     1,080
Total comprehensive income/(loss)   2,036               2,036
Cash dividends paid - common stock   (1,457)     (1,457)         (1,457)
Common stock issued under employee plans   232 232             232
Purchases and sales of treasury stock under employee plans - net   (18)     2 (21)       (18)
Changes in noncontrolling interests               (6)   (6)
Balance at the End of the Period at Mar. 31, 2021   $ 21,389 $ 56,788   $ 162,218 $ (169,360) $ (28,257) $ 124   $ 21,513
[1] Reflects the adoption of the FASB guidance on credit losses. Refer to note 2, “Accounting Changes.”