Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity and Accumulated Other Comprehensive Loss

Schedule of components of accumulated other comprehensive loss, net of related taxes

	Cumulative
	Foreign		Cumulative
	Currency		Unrecognized
	Translation		Pension
(Millions of dollars)	Adjustment		Cost			Total
Balance December 31, 2018	$	(349)	$	(61)		$	(410)
Other comprehensive loss before reclassifications		(20)		(14)			(34)
Amounts reclassified from accumulated other comprehensive loss to net earnings		—		4	(a)		4
Other comprehensive loss, net of tax		(20)		(10)			(30)
Balance December 31, 2019	$	(369)	$	(71)		$	(440)
Other comprehensive loss before reclassifications		(7)		(38)			(45)
Amounts reclassified from accumulated other comprehensive loss to net earnings		—		14	(a)		14
Other comprehensive loss, net of tax		(7)		(24)			(31)
Balance December 31, 2020	$	(376)	$	(95)		$	(471)

^(a)This primarily represents the amortization of actuarial losses (gains) and other adjustments that were included in net periodic pension cost. See Note 10 for further discussion.