Restructuring and Related Charges - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended		21 Months Ended	36 Months Ended			3 Months Ended		9 Months Ended		21 Months Ended	3 Months Ended		9 Months Ended		21 Months Ended	3 Months Ended		9 Months Ended		21 Months Ended	3 Months Ended		9 Months Ended		21 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013	May 31, 2014 2014 Restructuring Plan	May 31, 2014 2014 Restructuring Plan	Aug. 31, 2014 2014 Restructuring Plan Scenario, Forecast Maximum	Aug. 31, 2014 2014 Restructuring Plan Scenario, Forecast Minimum	May 31, 2014 2014 Restructuring Plan HVS	May 31, 2014 2014 Restructuring Plan HVS	May 31, 2014 2014 Restructuring Plan Employee Severance	May 31, 2014 2014 Restructuring Plan Employee Severance	May 31, 2014 2014 Restructuring Plan Employee Severance Restructuring Charges Cash	May 31, 2014 2014 Restructuring Plan Asset Write Off Cost	May 31, 2014 2014 Restructuring Plan Asset Write Off Cost	May 31, 2014 2014 Restructuring Plan Lease Costs	May 31, 2014 2014 Restructuring Plan Lease Costs Restructuring Charges Cash	May 31, 2014 2014 Restructuring Plan Other Related Costs	May 31, 2014 2014 Restructuring Plan Other Related Costs	May 31, 2014 2014 Restructuring Plan Other Related Costs Restructuring Charges Cash	May 31, 2014 2013 Restructuring Plan	May 31, 2013 2013 Restructuring Plan	May 31, 2014 2013 Restructuring Plan	May 31, 2013 2013 Restructuring Plan	May 31, 2014 2013 Restructuring Plan	Aug. 31, 2015 2013 Restructuring Plan Scenario, Forecast	Aug. 31, 2015 2013 Restructuring Plan Restructuring Charges Cash Scenario, Forecast Maximum	Aug. 31, 2015 2013 Restructuring Plan Restructuring Charges Cash Scenario, Forecast Minimum	May 31, 2014 2013 Restructuring Plan DMS	May 31, 2013 2013 Restructuring Plan DMS	May 31, 2014 2013 Restructuring Plan DMS	May 31, 2013 2013 Restructuring Plan DMS	May 31, 2014 2013 Restructuring Plan DMS	May 31, 2014 2013 Restructuring Plan E&I	May 31, 2013 2013 Restructuring Plan E&I	May 31, 2014 2013 Restructuring Plan E&I	May 31, 2013 2013 Restructuring Plan E&I	May 31, 2014 2013 Restructuring Plan E&I	May 31, 2014 2013 Restructuring Plan HVS	May 31, 2013 2013 Restructuring Plan HVS	May 31, 2014 2013 Restructuring Plan HVS	May 31, 2013 2013 Restructuring Plan HVS	May 31, 2014 2013 Restructuring Plan HVS	May 31, 2014 2013 Restructuring Plan Other	May 31, 2013 2013 Restructuring Plan Other	May 31, 2014 2013 Restructuring Plan Other	May 31, 2013 2013 Restructuring Plan Other	May 31, 2014 2013 Restructuring Plan Other	May 31, 2014 2013 Restructuring Plan Employee Severance	May 31, 2013 2013 Restructuring Plan Employee Severance	May 31, 2014 2013 Restructuring Plan Employee Severance	May 31, 2013 2013 Restructuring Plan Employee Severance	May 31, 2014 2013 Restructuring Plan Employee Severance Restructuring Charges Cash	May 31, 2013 2013 Restructuring Plan Employee Severance Restructuring Charges Cash	May 31, 2014 2013 Restructuring Plan Employee Severance Restructuring Charges Cash	May 31, 2013 2013 Restructuring Plan Employee Severance Restructuring Charges Cash	May 31, 2014 2013 Restructuring Plan Asset Write Off Cost	May 31, 2013 2013 Restructuring Plan Asset Write Off Cost	May 31, 2014 2013 Restructuring Plan Asset Write Off Cost	May 31, 2013 2013 Restructuring Plan Asset Write Off Cost	May 31, 2014 2013 Restructuring Plan Lease Costs	May 31, 2014 2013 Restructuring Plan Lease Costs Restructuring Charges Cash	May 31, 2014 2013 Restructuring Plan Other Related Costs	May 31, 2014 2013 Restructuring Plan Other Related Costs	May 31, 2014 2013 Restructuring Plan Other Related Costs Restructuring Charges Cash	May 31, 2014 2013 Restructuring Plan Other Related Costs Restructuring Charges Cash
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 12,446,000	$ 23,182,000	$ 65,652,000	$ 23,182,000	$ (168,000)	$ 42,320,000			$ (200,000)	$ 42,300,000	$ (23,000)	$ 16,350,000	$ 16,400,000	$ (159,000)	$ 22,725,000	$ 1,738,000	$ 1,700,000	$ 14,000	$ 1,507,000	$ 1,500,000	$ 12,614,000	$ 23,182,000	$ 23,332,000	$ 23,182,000					$ 3,813,000	$ 2,737,000	$ 18,596,000	$ 2,737,000		$ 6,538,000	$ 14,988,000	$ (199,000)	$ 14,988,000		$ 1,706,000	$ 3,065,000	$ 2,674,000	$ 3,065,000		$ 557,000	$ 2,392,000	$ 2,261,000	$ 2,392,000		$ 6,844,000	$ 17,571,000	$ 14,529,000	$ 17,571,000	$ 6,800,000	$ 17,600,000	$ 14,500,000	$ 17,600,000	$ 5,277,000	$ 5,611,000	$ 7,290,000	$ 5,611,000	$ 387,000	$ 400,000	$ 493,000	$ 1,126,000	$ 500,000	$ 1,100,000
Total pre-tax restructuring and other related costs expected to be recognized							42,300,000	70,000,000																		179,000,000	151,000,000	131,000,000
Restructuring related charges to date																									$ 103,800,000								$ 31,600,000					$ 54,100,000					$ 13,300,000					$ 4,800,000