Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 27, 2016	Feb. 28, 2015	Feb. 27, 2016	Feb. 28, 2015
Schedule of Stockholders Equity [Line Items]
Balance			$ 704,562
Dividends			(105,548)
Other comprehensive loss, net of tax	$ (556)	$ (25)	(834)	$ (70)
Purchase of Company stock			(1,831)
Distribution to noncontrolling interest partners			(903)
Restricted stock compensation			2,228
Net income	64,342	$ 50,959	318,342	$ 116,005
Balance	916,016		916,016
Treasury Stock [Member]
Schedule of Stockholders Equity [Line Items]
Balance			(20,482)
Purchase of Company stock			(1,831)
Grant of restricted stock, net of forfeitures			59
Balance	(22,254)		(22,254)
Paid In Capital [Member]
Schedule of Stockholders Equity [Line Items]
Balance			43,304
Grant of restricted stock, net of forfeitures			(59)
Restricted stock compensation			2,228
Balance	45,473		45,473
Accumulated Other Comprehensive Loss [Member]
Schedule of Stockholders Equity [Line Items]
Balance			22
Other comprehensive loss, net of tax			(834)
Balance	(812)		(812)
Retained Earnings [Member]
Schedule of Stockholders Equity [Line Items]
Balance			679,969
Dividends			(105,548)
Net income			316,417
Balance	890,838		890,838
Noncontrolling Interests [Member]
Schedule of Stockholders Equity [Line Items]
Balance			998
Distribution to noncontrolling interest partners			(903)
Net income			1,925
Balance	2,020		2,020
Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Balance			703
Balance	703		703
Class A Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Balance			48
Balance	$ 48		$ 48