Short-term Investments (Tables)

12 Months Ended

Dec. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

The components of investments were as follows:

	December 31, 2022
(Millions of dollars)	Fair Value Level	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value		Cash and Cash Equivalents		Short-term Investments
Available-for-sale debt securities
Commercial paper	Level 2	$	3,074	$	—	$	(1)	$	3,073	$	1,106	$	1,967
Certificates of deposit and time deposits	Level 2	2,093		—		—		2,093		1,500		593
U.S. government securities	Level 1	1,071		—		—		1,071		498		573
Corporate notes and bonds	Level 2	66		—		—		66		54		12
Total available-for-sale debt securities		$	6,304	$	—	$	(1)	$	6,303	$	3,158	$	3,145
Cash								5,467		5,467		—
Total								$	11,770	$	8,625	$	3,145

	December 31, 2021
(Millions of dollars)	Fair Value Level	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value		Cash and Cash Equivalents		Short-term Investments
Available-for-sale debt securities
Commercial paper	Level 2	$	4,905	$	—	$	(1)	$	4,904	$	868	$	4,036
Certificates of deposit and time deposits	Level 2	2,024		—		—		2,024		750		1,274
U.S. government securities	Level 1	28		—		—		28		—		28
Corporate notes and bonds	Level 2	271		—		—		271		61		210
Total available-for-sale debt securities		$	7,228	$	—	$	(1)	$	7,227	$	1,679	$	5,548
Cash								3,612		3,612		—
Total								$	10,839	$	5,291	$	5,548