Pension Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Aug. 31, 2012
Pension Benefits, U.S. Plans
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Contribution to retirement plans in current fiscal year	$ 29.9
Pension Benefits, Non-U.S. Plans
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Contribution to retirement plans in current fiscal year	$ 8.3

The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

No definition available.

Name:	us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsInCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant