Commitments, Contingencies and Guarantees (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Feb. 29, 2012
Commitments and guarantees
2012	$ 1,508.4
2013	52.1
2014 and 2015	1,196.8
2016 and 2017	127.0
2018 and Later	569.1
Notional/ Maximum Payout	3,453.4
Equity Commitments [Member]
Commitments and guarantees
2012	0.3
2013	0.2
2014 and 2015	8.2
2018 and Later	569.1
Notional/ Maximum Payout	577.8
Loan Commitments [Member]
Commitments and guarantees
2012	89.3
2013	51.9
2014 and 2015	464.6
2016 and 2017	36.1
Notional/ Maximum Payout	641.9
Mortgage-related commitments [Member]
Commitments and guarantees
2012	818.5
2014 and 2015	724.0
2016 and 2017	90.9
Notional/ Maximum Payout	1,633.4
Forward starting repos [Member]
Commitments and guarantees
2012	600.3
Notional/ Maximum Payout	$ 600.3

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Commitments and guarantees with a remaining term that matures during the fiscal year. These may include, equity, loan, mortgage-related and underwriting commitments, derivative guarantees, etc.

+ References

No definition available.

+ Details

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- Definition

Commitments and guarantees expected to be due within 5 to 6 fiscal years. These may include, equity, loan, mortgage-related and underwriting commitments, derivative guarantees, etc.

+ References

No definition available.

+ Details

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- Definition

Commitments and guarantees expected to be due within 3 to 4 fiscal years. These may include, equity, loan, mortgage-related and underwriting commitments, derivative guarantees, etc.

+ References

No definition available.

+ Details

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- Definition

Commitments and guarantees expected to be due within 2 fiscal years. These may include, equity, loan, mortgage-related and underwriting commitments, derivative guarantees, etc.

+ References

No definition available.

+ Details

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- Definition

Commitments and guarantees expected to be due within 7 fiscal years and thereafter. These may include, equity, loan, mortgage-related and underwriting commitments and derivative guarantees, etc.

+ References

No definition available.

+ Details

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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