CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2012	$ 4,919,230	$ 254,119	$ 834,677	$ 7,199,227	$ (54,906)	$ (3,313,887)
Net earnings	540,052	0	0	540,052	0	0
Dividends paid	(120,238)	0	0	(120,238)	0	0
Common stock issued for the exercise of stock options and SARs	(7,667)	762	(8,429)	0	0	0
Tax benefit from the exercise of stock options	12,643	0	12,643	0	0	0
Stock-based compensation expense	16,303	0	16,303	0	0	0
Common stock acquired	(351,112)	0	0	0	0	(351,112)
Other comprehensive earnings, net of tax	(28,339)	0	0	0	(28,339)	0
Balance at Jun. 30, 2013	$ 4,980,872	$ 254,881	$ 855,194	$ 7,619,041	$ (83,245)	$ (3,664,999)