Restructuring and Related Charges - Additional Information (Detail) (USD $)	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 89,453,000	$ 628,000
2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	89,453,000
Cash cost payment related to restructuring activities	(22,677,000)
Asset Write off Charge and Other Non-Cash Activity	8,866,000
Total pre-tax restructuring and other related costs expected to be recognized	188,000,000
2013 Restructuring Plan | Restructuring Charges Cash
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	81,200,000
2013 Restructuring Plan | Maximum
Restructuring Cost and Reserve [Line Items]
Total pre-tax restructuring and other related costs expected to be recognized	160,000,000
2013 Restructuring Plan | Minimum
Restructuring Cost and Reserve [Line Items]
Total pre-tax restructuring and other related costs expected to be recognized	140,000,000
2013 Restructuring Plan | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	80,331,000
Cash cost payment related to restructuring activities	(22,183,000)
Asset Write off Charge and Other Non-Cash Activity	525,000
2013 Restructuring Plan | Employee Severance | Restructuring Charges Cash
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	80,331,000
2013 Restructuring Plan | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	275,000
Cash cost payment related to restructuring activities	(239,000)
2013 Restructuring Plan | Other Restructuring | Restructuring Charges Cash
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	275,000
2013 Restructuring Plan | Lease Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	506,000
Cash cost payment related to restructuring activities	(255,000)
2013 Restructuring Plan | Lease Costs | Restructuring Charges Cash
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	506,000
2013 Restructuring Plan | Restructuring Charges Noncash
Restructuring Cost and Reserve [Line Items]
Asset Write off Charge and Other Non-Cash Activity	8,300,000
2013 Restructuring Plan | Asset Write Off Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	8,341,000
Asset Write off Charge and Other Non-Cash Activity	$ 8,341,000