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Significant Accounting Policies (Details 2)	Feb. 29, 2012	Feb. 28, 2012
Class A and Class C [Member]
Compensation for mutual fund administration, transfer agency and other related functions
Rate of Administrative Service Fees	0.25%	0.26%
Class I [Member]
Compensation for mutual fund administration, transfer agency and other related functions
Rate of Administrative Service Fees	0.25%	0.24%
Class Y [Member]
Compensation for mutual fund administration, transfer agency and other related functions
Rate of Administrative Service Fees	0.10%	0.10%

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- Details

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- Definition

Rate of administrative service fees.

+ References

No definition available.

+ Details

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