CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Earnings [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2011	$ 250,592	$ 663,289	$ (47,510)	$ 6,629,116	$ (2,564,932)	$ 4,930,555
Net earnings	0	0	0	196,063	0	196,063
Dividends paid	0	0	0	(57,943)	0	(57,943)
Common stock issued for options exercised	715	4,193	0	0	0	4,908
Tax benefit from the exercise of stock options	0	11,004	0	0	0	11,004
Stock-based compensation expense	0	9,005	0	0	0	9,005
Common stock acquired	0	0	0	0	(45,157)	(45,157)
Other comprehensive earnings, net of tax	0	0	41,242	0	0	41,242
Balance at Mar. 31, 2012	$ 251,307	$ 687,491	$ (6,268)	$ 6,767,236	$ (2,610,089)	$ 5,089,677