QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended															12 Months Ended
		Aug. 31, 2020		May 31, 2020		Feb. 29, 2020		Nov. 30, 2019		Aug. 31, 2019	May 31, 2019		Feb. 28, 2019		Nov. 30, 2018		Aug. 31, 2020		Aug. 31, 2019		Aug. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Net sales		$ 1,409,132	[1]	$ 1,341,683	[1]	$ 1,340,963	[1]	$ 1,384,708	[1]	$ 1,543,005	$ 1,605,872	[1]	$ 1,402,783	[1]	$ 1,277,342	[1]	$ 5,476,486		$ 5,829,002		$ 4,643,723
Gross Profit	[1]	263,407		225,330		217,867		238,194		252,659	241,630		150,290		158,909
Net earnings from continuing operations		67,782		64,169		63,596		82,755		85,880	78,551		14,928		19,420		278,302		198,779		135,237
Net earnings (loss)		$ 67,623		$ 64,734		$ 63,798		$ 83,348		$ 86,111	$ 78,390		$ 13,850		$ 19,742		$ 279,503		$ 198,093		$ 138,506
Basic EPS from continuing operations		$ 0.57		$ 0.54		$ 0.53		$ 0.70		$ 0.73	$ 0.67		$ 0.13		$ 0.17		$ 2.34	[2]	$ 1.69	[2]	$ 1.16	[2]
Diluted EPS from continuing operations		0.56		0.53		0.53		0.69		0.72	0.66		0.13		0.16		2.31	[2]	1.67	[2]	1.14	[2]
Basic EPS		0.57		0.54		0.54		0.70		0.73	0.66		0.12		0.17		2.35	[2]	1.68	[2]	1.19	[2]
Diluted EPS		$ 0.56		$ 0.54		$ 0.53		$ 0.70		$ 0.72	$ 0.66		$ 0.12		$ 0.17		$ 2.32	[2]	$ 1.66	[2]	$ 1.17	[2]
Acquisition related costs																	$ 32,100				$ 51,700

[1] Excludes discontinued operations. (2) Fourth quarter results include a $32.1 million charge for a working capital adjustment related to the Acquisition, which was recorded subsequent to the end of the allowable one-year measurement period.

[2] Earnings Per Share ("EPS") is calculated independently for each component and may not sum to Net EPS due to rounding