Stockholders' Equity and Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2017

Stockholders' Equity and Accumulated Other Comprehensive Loss

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

	Cumulative
	Foreign			Unrealized
	Currency			Gain		Unrecognized
	Translation			on		Pension
(Millions of dollars)	Adjustment			Investments		Cost			Total
Balance December 31, 2015	$	(228)		$	1	$	(51)		$	(278)
Other comprehensive income (loss) before reclassifications		(26)			1		(4)			(29)
Amounts reclassified from accumulated other comprehensive loss to net earnings		—			—		3	(1)		3
Other comprehensive income (loss), net of tax		(26)			1		(1)			(26)
Balance December 31, 2016	$	(254)		$	2	$	(52)		$	(304)
Other comprehensive income (loss) before reclassifications		(6)			5		(8)			(9)
Amounts reclassified from accumulated other comprehensive loss to net earnings		—			—		4	(1)		4
Other comprehensive income (loss), net of tax		(6)			5		(4)			(5)
Amounts reclassified from accumulated other comprehensive loss to retained earnings		(37)	(2)		—		(8)	(2)		(45)
Balance December 31, 2017	$	(297)		$	7	$	(64)		$	(354)

(1)  This primarily represents the amortization of actuarial losses that were included in net periodic pension cost and recorded in operating income. See Note 9 for further discussion.

(2)  This represents the adoption of accounting guidance to reclassify $45 million of tax effects from accumulated other comprehensive loss to retained earnings in the consolidated financial statements for the year ended December 31, 2017.