Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Feb. 29, 2020	Aug. 31, 2019	Sep. 01, 2019
Schedule of Intangible Assets [Line Items]
Other intangible assets, gross	$ 469,805	$ 299,705
Accumulated Amortization	54,520	43,623
Other intangible assets, net	$ 415,285	$ 256,082	$ 254,772
Weighted average remaining amortization period	10 years
Dealer networks
Schedule of Intangible Assets [Line Items]
Weighted Average Life-Years	12 years 1 month 6 days	12 years 2 months 12 days
Other intangible assets, gross	$ 159,581	$ 95,581
Accumulated Amortization	$ 25,903	$ 20,329
Backlog
Schedule of Intangible Assets [Line Items]
Weighted Average Life-Years	6 months	6 months
Other intangible assets, gross	$ 28,327	$ 19,527
Accumulated Amortization	$ 24,991	$ 19,527
Non-compete agreements
Schedule of Intangible Assets [Line Items]
Weighted Average Life-Years	4 years 3 months 18 days	4 years 1 month 6 days
Other intangible assets, gross	$ 6,647	$ 5,347
Accumulated Amortization	3,626	$ 3,077
Leasehold interest-favorable
Schedule of Intangible Assets [Line Items]
Weighted Average Life-Years		8 years 1 month 6 days
Other intangible assets, gross	0	$ 2,000
Accumulated Amortization	0	690
Trade names
Schedule of Intangible Assets [Line Items]
Other intangible assets, gross	$ 275,250	$ 177,250