Comprehensive Income

6 Months Ended

Jun. 30, 2011

Comprehensive Income and Capital Stock [Abstract]

COMPREHENSIVE INCOME

NOTE 4—COMPREHENSIVE INCOME

Comprehensive income is summarized as follows:

(Thousands of dollars)	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
Net income	$	179,115		$	181,706		$	247,431		$	214,309
Foreign currency translation adjustments		9,384			(21,173	)		26,889			(14,687	)
Amortization of net prior service costs and net actuarial losses, net of taxes (1)		3,435			3,841			6,684			7,492
Adjustments of marketable equity securities, net of taxes (2)		(427	)		333			(408	)		665
Comprehensive income	$	191,507		$	164,707		$	280,596		$	207,779

(1)	The tax effect of amortization of net prior service costs and net actuarial losses was $(2,873) and $(5,961) for the three and six months ended June 30, 2011 and $(1,210) and $(3,624) for the three and six months ended June 30, 2010.
(2)	The tax effect of adjustments of marketable equity securities was $273 and $261 for the three and six months ended June 30, 2011 and $(213) and $(425) for the three and six months ended June 30, 2010.