Investments (Tables)

9 Months Ended

Sep. 30, 2023

Investments

Summary of the estimated fair value of short-term investments classified as trading securities

	September 30,		December 31,
(Millions of dollars)	2023		2022
Domestic equity securities	$	131	$	433
Foreign equity securities		89		169
Domestic debt securities		450		399
Foreign debt securities		100		66
Money market funds held in trading accounts		359		12
Other trading securities		5		7
Total trading short-term investments	$	1,134	$	1,086