Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net earnings	$ 306,094	$ 290,847	$ 269,493
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	21,903	15,641	(18,731)
Unrealized gains (losses) on cash flow hedging arrangements:
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(491)	(1,748)	(4,028)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	3,496	2,029	1,911
Net actuarial gains (losses)	30,381	(46,792)	(79,947)
Plan amendments and prior service cost	2,371	18,017	(274)
Amortization of actuarial (gains) losses and plan amendments and prior service cost	6,775	4,261	2,326
Defined Benefit Plans, Impact of FX on Current Year Change in OCI, net of tax	(2,010)	(1,931)	3,604
Total other comprehensive income (loss), net of tax	62,425	(10,523)	(95,139)
Total other comprehensive income (loss), net of tax	$ 368,519	$ 280,324	$ 174,354