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, 2011	$ 4,930,555	$ 250,592	$ 663,289	$ 6,629,116	$ (47,510)	$ (2,564,932)
Net earnings	651,210	0	0	651,210	0	0
Dividends paid	(179,133)	0	0	(179,133)	0	0
Common stock issued for acquisition	100,610	1,636	98,974	0	0	0
Common stock issued for options exercised	23,271	1,319	21,952	0	0	0
Tax benefit from the exercise of stock options	14,702	0	14,702	0	0	0
Stock-based compensation expense	24,002	0	24,002	0	0	0
Common stock acquired	(393,487)	0	0	0	0	(393,487)
Other comprehensive earnings, net of tax	40,936	0	0	0	40,936	0
Balance at Sep. 30, 2012	$ 5,212,666	$ 253,547	$ 822,919	$ 7,101,193	$ (6,574)	$ (2,958,419)