Fair Value Disclosures (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes assets and liabilities measured at fair value on a recurring basis at December 31, 2021 and 2020: 

	Fair Value Measurements Using
(Millions of dollars)	Level 1				Level 2				Level 3
	2021		2020		2021		2020		2021		2020
Assets
Derivative assets	$	—	$	—	$	136	$	200	$	—	$	—
Investments and securities *	42		21		—		—		20		47
Total	$	42	$	21	$	136	$	200	$	20	$	47
Liabilities
Derivative liabilities	$	—	$	—	$	35	$	81	$	—	$	—

*Investments and securities are recorded in prepaid and other current assets and other long-term assets in the company's consolidated balance sheets.