Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net earnings	$ 88,727	$ 106,876	$ 249,470	$ 293,103
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net of tax of $5,622 and $13,476 for the three months ended September 30, 2012 and 2011, and $4,864 and $5,621 for the nine months ended September 30, 2012 and 2011	8,982	(24,707)	7,691	(10,514)
Reclassification adjustments for foreign currency realized losses, net of tax of $350 for the three and nine months ended September 30, 2012 and $391 for the three and nine months ended September 30, 2011	650	618	650	618
Other comprehensive income (loss)	9,632	(24,089)	8,341	(9,896)
Comprehensive income	98,359	82,787	257,811	283,207
Less comprehensive income (loss) attributable to the noncontrolling Interest	257	59	428	(87)
Comprehensive income attributable to shareholders	$ 98,102	$ 82,728	$ 257,383	$ 283,294