Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2012
Net earnings	$ 160,152	$ 136,835	$ 125,353
Other comprehensive income (loss):
Foreign currency translation	7,618	5,393	(17,930)
Pension liability adjustment, net of tax	(1,044)	2,273	(9,241)
Cash flow hedges, net of tax	2,509	698	(318)
Other comprehensive income (loss)	9,083	8,364	(27,489)
Comprehensive income	169,235	145,199	97,864
Comprehensive income attributable to noncontrolling interest	9,480	406	6,631
Comprehensive income attributable to controlling interest	$ 159,755	$ 144,793	$ 91,233