Retirement Benefits - Narrative (Detail) (USD $) In Millions, unless otherwise specified			12 Months Ended
Aug. 31, 2014	Nov. 30, 2013	Nov. 30, 2013 Subsidiary Concentration Risk [Member] Unfunded Pension Obligations [Member]
Compensation and Retirement Disclosure [Abstract]
Defined benefit pension plan assets, total		$ 1,258.4
Projected benefit obligations, total		1,538.6
Unfunded pension obligation	248.3	261.7
Discount rate to value pension benefits		4.54%
Defined Benefit Plan Disclosure [Line Items]
Percentage of unfunded pension benefit obligation for tax-qualified pension plan			91.00%
Accumulated prepayment credits		$ 30.6

Defined Benefit Plan Prepayment Credits

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

This represents the noncurrent liability recognized in the balance sheet that is associated with the defined benefit pension plans.

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- Definition

The interest rate used to adjust for the time value of money for the plan.

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- Definition

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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