Annual report pursuant to Section 13 and 15(d)

MARKETABLE SECURITIES (Tables)

v3.10.0.1
MARKETABLE SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2018
Marketable Securities [Abstract]  
Summary of marketable securities A summary of marketable securities, all of which are classified as current, was as follows:
 
 
December 31,
 
 
2018
 
2017
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
 
$
103

 
$
1

 
$
104

 
$
170

 
$
—

 
$
170

Certificates of deposit
 
101

 
—

 
101

 
12

 
—

 
12

Equity mutual funds
 
16

 
—

 
16

 
12

 
3

 
15

Debt securities
 
1

 
—

 
1

 
1

 
—

 
1

Total marketable securities
 
$
221

 
$
1

 
$
222

 
$
195

 
$
3

 
$
198


______________________________________________________
(1)
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
 
2018
 
2017
 
2016
Proceeds from sales of marketable securities
 
$
253

 
$
145

 
$
116

Proceeds from maturities of marketable securities
 
78

 
121

 
190

Investments in marketable securities - liquidations
 
$
331

 
$
266

 
$
306