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Organization and Nature of Business - Additional Information (Detail) - M&I Brazil	Dec. 31, 2014
Organization And Nature Of Business [Line Items]
Ownership interest in wholly-owned subsidiary	20.00%
M&I
Organization And Nature Of Business [Line Items]
Ownership interest in wholly-owned subsidiary	80.00%

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- Definition

Direct ownership percentage.

+ References

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X

- Definition

Organization and nature of business.

+ References

No definition available.

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- Details

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