Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract]

Earnings Per Share

	2012		2011
	-----------------		-----------------
Quarter ----------	Basic -------	Diluted --------	Basic -------	Diluted --------
Net earnings	$  164,852	164,852	170,990	170,990
	=======	=======	=======	=======
Average shares outstanding	130,619	130,619	132,448	132,448
Effect of dilutive securities:
Options and other share-based awards	-	1,864	-	2,476
	------------	------------	------------	------------
Equivalent shares	130,619	132,483	132,448	134,924
	=======	=======	=======	=======
Net earnings per common share	$        1.26	1.24	1.29	1.27
	=======	=======	=======	=======

	2012		2011
	-----------------		-----------------
Nine Months ---------------	Basic -------	Diluted ---------	Basic -------	Diluted ---------
Net earnings	$  205,700	205,700	246,237	246,237
	=======	=======	=======	=======
Average shares outstanding	130,146	130,146	135,388	135,388
Effect of dilutive securities:
Options and other share-based awards	-	1,893	-	2,985
	------------	------------	------------	------------
Equivalent shares	130,146	132,039	135,388	138,373
	=======	=======	=======	=======
Net earnings per common share	$        1.58	1.56	1.82	1.78
	=======	=======	=======	=======