Discontinued Operations - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended		0 Months Ended	3 Months Ended	9 Months Ended	0 Months Ended
	May 31, 2014	May 31, 2014	Apr. 01, 2014 Estimate of Fair Value Measurement [Member]	Dec. 17, 2013 After market services (AMS)	May 31, 2014 After market services (AMS)	May 31, 2014 After market services (AMS)	Apr. 01, 2014 After market services (AMS) Malaysian
Discontinued Operations [Line Items]
Consideration for the sale of a business				$ 725,000,000
Cash consideration for the sale of a business				675,000,000
Consideration for the sale of a business preferred stock			33,200,000	50,000,000
Accretes dividends at an annual rate				8.00%
Redeemable period				9 years
Reduction in final purchase price				90,500,000
Amount kept in escrow relating to sale of business							20,000,000
Gain on sale of discontinued operations	238,497,000	229,542,000			238,500,000	229,500,000
Direct transaction cost	7,400,000	16,400,000
Income tax expense	$ 9,778,000	$ 9,778,000