Acquisition of the Global Commodities Group (Details 1) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended	8 Months Ended	9 Months Ended
Aug. 31, 2011	Aug. 31, 2010	Aug. 31, 2010	Aug. 31, 2011
Unaudited pro forma combined financial information related to global commodities group
Total net revenues	$ 473.3	$ 566.7	$ 1,703.0	$ 2,079.7
Net earnings to common shareholders	$ 16.7	$ 37.6	$ 210.8	$ 198.4
Earnings per common share:
Basic	$ 0.07	$ 0.18	$ 1.03	$ 0.90
Diluted	$ 0.07	$ 0.18	$ 1.03	$ 0.90
Weighted average common shares:
Basic	218,426	195,601	196,943	209,544
Diluted	218,431	195,612	201,062	213,661

Average basic common shares issued and outstanding.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 55
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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