Commitments, Contingencies and Guarantees - Guarantees (Detail) $ in Millions	Aug. 31, 2016 USD ($)
Guarantee Obligations [Line Items]
Notional/ Maximum Payout	$ 3,727.5
Derivative contracts - non-credit related [Member]
Guarantee Obligations [Line Items]
2016	20,564.3
2017	5,702.8
2018 and 2019	377.9
2020 and 2021	0.0
2022 and Later	437.4
Notional/ Maximum Payout	27,082.4
Written derivative contracts - credit related [Member]
Guarantee Obligations [Line Items]
2016	0.0
2017	0.0
2018 and 2019	91.7
2020 and 2021	258.7
2022 and Later	0.0
Notional/ Maximum Payout	350.4
Derivatives [Member]
Guarantee Obligations [Line Items]
2016	20,564.3
2017	5,702.8
2018 and 2019	469.6
2020 and 2021	258.7
2022 and Later	437.4
Notional/ Maximum Payout	$ 27,432.8

Guarantees with a remaining term that matures during the fiscal year. These may include derivative guarantees, etc.

No definition available.

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- Definition

Guarantees expected to be due within 5 to 6 fiscal years. These may include, derivative guarantees, etc.

+ References

No definition available.

+ Details

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- Definition

Guarantees expected to be due within 3 to 4 fiscal years. These may include, derivative guarantees, etc.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Guarantees expected to be due within 2 fiscal years. These may include, derivative guarantees, etc.

+ References

No definition available.

+ Details

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- Definition

Guarantees expected to be due within 7 fiscal years and thereafter. These may include, derivative guarantees, etc

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ 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 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

+ Details

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- Details

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- Details

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- Details

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