Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

Natixis Funds Trust II

Prospectus Date

rr_ProspectusDate

May 01, 2014

Supplement [Text Block]

nftii_SupplementTextBlock

NATIXIS OAKMARK FUND

Supplement dated May 1, 2014 to the Prospectus of Natixis Oakmark Fund (the "Fund"), dated May 1, 2014, as may be revised and supplemented from time to time.

Effective July 1, 2014, the Fund's "Investment Goal" in the Prospectus is amended and restated as follows:

The Fund seeks long-term capital appreciation. 

Natixis Oakmark Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

nftii_SupplementTextBlock

NATIXIS OAKMARK FUND

Supplement dated May 1, 2014 to the Prospectus of Natixis Oakmark Fund (the "Fund"), dated May 1, 2014, as may be revised and supplemented from time to time.

Effective July 1, 2014, the Fund's "Investment Goal" in the Prospectus is amended and restated as follows:

The Fund seeks long-term capital appreciation. 

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks long-term capital appreciation.