Acquisitions (Tables)

6 Months Ended

Jun. 30, 2014

Business Combinations [Abstract]

Summary of pro-forma consolidated financial information

The following unaudited pro-forma summary presents consolidated financial information as if the U.S./Canada business of Comex had been acquired as of the beginning of each period presented. The pro-forma consolidated financial information does not necessarily reflect the actual results that would have occurred had the acquisition taken place on January 1, 2013 or of future results of operations of this acquisition under ownership and operation of the Company.

(Thousands of dollars except per share data)	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Net sales	$	3,042,995	$	2,849,091	$	5,409,551	$	5,123,962
Net income	291,447		249,693		406,904		352,502
Net income per common share:
Basic	$	3.00	$	2.44	$	4.14	$	3.44
Diluted	$	2.94	$	2.39	$	4.06	$	3.37