EXHIBIT 11

COMPUTATION OF EARNINGS PER SHARE

In thousands of dollars, except per share data

	Six Months Ended June 30,					Three Months Ended June 30,
	2004		2003			2004		2003
Numerator:
Net income	$	370,230	$	322,346		$	253,770	$	251,300
Effect of dilutive securities:
Convertible debt - 2.625% issued in 1998		—		2,106			—		—
LYONS - 1998 issue		—		1,446	*		—		230	*
Less: Anti-dilutive items		—		(1,446	)		—		(230	)
Numerator for net income per common share - diluted	$	370,230	$	324,452		$	253,770	$	251,300
Denominator:
Weighted average common shares		613,517		613,961			610,478		614,361
Effect of dilutive securities:
Stock options and common stock warrants		2,775		3,078			2,482		3,195
Convertible debt - 2.625% issued in 1998		—		4,154			—		—
LYONS - 1998 issue		—		1,798	*		—		563	*
Less: Anti-dilutive items		—		(1,798	)		—		(563	)
Denominator for net income per common share - diluted		616,292		621,193			612,960		617,556
Net income (loss) per common share:
Basic	$	.60	$	.53		$	.42	$	.41
Diluted	$	.60	$	.52		$	.41	$	.41

* Denotes items that are anti-dilutive to the calculation of earnings per share.