Retirement Benefits - Schedule of Assumptions Used to Determine Benefit Obligations (Detail) (Benefit Obligations [Member])	12 Months Ended
Nov. 30, 2013	Nov. 30, 2012
Pension Benefits [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Discount rate	4.54%	3.68%
Discount rate (benefit restoration plan)	4.65%	3.77%
Medical and Life Insurance Benefits [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Discount rate	3.98%	3.24%
Ultimate healthcare trend rate	5.00%	5.00%
Initial healthcare trend rate (pre 65/post 65)	8.50%	8.75%
Year ultimate rate attained (pre 65/post 65)	2021	2021

Defined Benefit Plan, Assumptions Used Calculating Benefit Restoration Plan Obligations, Discount Rate

No definition available.

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- Details

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- Definition

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

+ References

+ Details

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- Definition

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (l)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Health Care Cost Trend Rate

-URI http://asc.fasb.org/extlink&oid=6514820

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- Definition

The ultimate trend rate for health care costs.

+ References

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- Definition

Year the ultimate health care cost trend rate is expected to be reached, in CCYY format.

+ References

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