Annual report pursuant to Section 13 and 15(d)

MARKETABLE SECURITIES (Tables)

v3.20.4
MARKETABLE SECURITIES (Tables)
12 Months Ended
Dec. 31, 2020
Marketable Securities [Abstract]  
Summary of marketable securities
A summary of marketable securities, all of which are classified as current, was as follows:
December 31,
  2020 2019
In millions Cost
Gross unrealized gains/(losses) (1)
Estimated
fair value
Cost
Gross unrealized gains/(losses) (1)
Estimated
fair value
Equity securities            
Debt mutual funds $ 267  $ 5  $ 272  $ 180  $ $ 183 
Certificates of deposit 164    164  133  —  133 
Equity mutual funds 19  5  24  19  23 
Bank debentures       — 
Debt securities 1    1  — 
Total marketable securities $ 451  $ 10  $ 461  $ 334  $ $ 341 
(1) Unrealized gains and losses for debt securities are recorded in other comprehensive income while unrealized gains and losses for equity securities are recorded in "Other income, net" in our Consolidated Statements of Net Income.
Schedule of proceeds from sales and maturities of marketable securities
The proceeds from sales and maturities of marketable securities were as follows:
Years ended December 31,
In millions 2020 2019 2018
Proceeds from sales of marketable securities $ 343  $ 258  $ 253 
Proceeds from maturities of marketable securities 126  131  78 
Investments in marketable securities - liquidations $ 469  $ 389  $ 331