497

Natixis Funds Trust II

Exhibit Index

Exhibit	Exhibit Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2017
Registrant Name	dei_EntityRegistrantName	Natixis Funds Trust II
Central Index Key	dei_EntityCentralIndexKey	0000052136
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Oct. 31, 2018
Document Effective Date	dei_DocumentEffectiveDate	Oct. 31, 2018
Prospectus Date	rr_ProspectusDate	May 01, 2018
Entity Inv Company Type	dei_EntityInvCompanyType	N-1A

XML

May 01, 2018

ASG GLOBAL ALTERNATIVES FUND

Supplement dated October 31, 2018 to the Prospectus of the ASG Global Alternatives Fund (the “Fund”), dated May 1, 2018, as may be revised and supplemented from time to time:

Effective October 31, 2018, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:

Annual Fund Operating Expenses

(expenses that you pay each year as a percentage of the value of your investment)

	Class A			Class C			Class N			Class T			Class Y
Management fees		1.15	%		1.15	%		1.15	%		1.15	%		1.15	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.17	%		0.17	%		0.11	%		0.17	%1		0.17	%
Acquired fund fees and expenses2		0.02	%		0.02	%		0.02	%		0.02	%		0.02	%
Total annual fund operating expenses		1.59	%		2.34	%		1.28	%		1.59	%		1.34	%
Fee waiver and/or expense reimbursement3		0.01	%		0.01	%		0.00	%		0.01	%		0.01	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.58	%		2.33	%		1.28	%		1.58	%		1.33	%

¹ Other expenses are estimated for the current fiscal year.

² The expense information shown in the table above differs from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.

³ AlphaSimplex Group, LLC (“AlphaSimplex” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.54%, 2.29%, 1.24%, 1.54% and 1.29% of the Fund’s average daily net assets for Class A, Class C, Class N, Class T and Class Y shares, respectively, exclusive of brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below the applicable expense limitations for Class A, Class C, Class N, Class T and Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the examples for Class A, Class C, Class T and Class Y are based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

If shares are redeemed:	1 year		3 years		5 years		10 years
Class A	$	726	$	1,047	$	1,389	$	2,354
Class C	$	336	$	729	$	1,249	$	2,675
Class N	$	130	$	406	$	702	$	1,545
Class T	$	407	$	738	$	1,093	$	2,091
Class Y	$	135	$	423	$	733	$	1,611
If shares are not redeemed:	1 year		3 years		5 years		10 years
Class C	$	236	$	729	$	1,249	$	2,675

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

Natixis Funds Trust II

Prospectus Date

rr_ProspectusDate

May 01, 2018

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

ASG GLOBAL ALTERNATIVES FUND

Supplement dated October 31, 2018 to the Prospectus of the ASG Global Alternatives Fund (the “Fund”), dated May 1, 2018, as may be revised and supplemented from time to time:

Effective October 31, 2018, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:

Annual Fund Operating Expenses

(expenses that you pay each year as a percentage of the value of your investment)

	Class A			Class C			Class N			Class T			Class Y
Management fees		1.15	%		1.15	%		1.15	%		1.15	%		1.15	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.17	%		0.17	%		0.11	%		0.17	%1		0.17	%
Acquired fund fees and expenses2		0.02	%		0.02	%		0.02	%		0.02	%		0.02	%
Total annual fund operating expenses		1.59	%		2.34	%		1.28	%		1.59	%		1.34	%
Fee waiver and/or expense reimbursement3		0.01	%		0.01	%		0.00	%		0.01	%		0.01	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.58	%		2.33	%		1.28	%		1.58	%		1.33	%

¹ Other expenses are estimated for the current fiscal year.

² The expense information shown in the table above differs from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.

³ AlphaSimplex Group, LLC (“AlphaSimplex” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.54%, 2.29%, 1.24%, 1.54% and 1.29% of the Fund’s average daily net assets for Class A, Class C, Class N, Class T and Class Y shares, respectively, exclusive of brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below the applicable expense limitations for Class A, Class C, Class N, Class T and Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the examples for Class A, Class C, Class T and Class Y are based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

If shares are redeemed:	1 year		3 years		5 years		10 years
Class A	$	726	$	1,047	$	1,389	$	2,354
Class C	$	336	$	729	$	1,249	$	2,675
Class N	$	130	$	406	$	702	$	1,545
Class T	$	407	$	738	$	1,093	$	2,091
Class Y	$	135	$	423	$	733	$	1,611
If shares are not redeemed:	1 year		3 years		5 years		10 years
Class C	$	236	$	729	$	1,249	$	2,675

ASG Global Alternatives Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

ASG GLOBAL ALTERNATIVES FUND

Supplement dated October 31, 2018 to the Prospectus of the ASG Global Alternatives Fund (the “Fund”), dated May 1, 2018, as may be revised and supplemented from time to time:

Effective October 31, 2018, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:

Annual Fund Operating Expenses

(expenses that you pay each year as a percentage of the value of your investment)

	Class A			Class C			Class N			Class T			Class Y
Management fees		1.15	%		1.15	%		1.15	%		1.15	%		1.15	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.17	%		0.17	%		0.11	%		0.17	%1		0.17	%
Acquired fund fees and expenses2		0.02	%		0.02	%		0.02	%		0.02	%		0.02	%
Total annual fund operating expenses		1.59	%		2.34	%		1.28	%		1.59	%		1.34	%
Fee waiver and/or expense reimbursement3		0.01	%		0.01	%		0.00	%		0.01	%		0.01	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.58	%		2.33	%		1.28	%		1.58	%		1.33	%

¹ Other expenses are estimated for the current fiscal year.

² The expense information shown in the table above differs from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.

³ AlphaSimplex Group, LLC (“AlphaSimplex” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.54%, 2.29%, 1.24%, 1.54% and 1.29% of the Fund’s average daily net assets for Class A, Class C, Class N, Class T and Class Y shares, respectively, exclusive of brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below the applicable expense limitations for Class A, Class C, Class N, Class T and Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the examples for Class A, Class C, Class T and Class Y are based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

If shares are redeemed:	1 year		3 years		5 years		10 years
Class A	$	726	$	1,047	$	1,389	$	2,354
Class C	$	336	$	729	$	1,249	$	2,675
Class N	$	130	$	406	$	702	$	1,545
Class T	$	407	$	738	$	1,093	$	2,091
Class Y	$	135	$	423	$	733	$	1,611
If shares are not redeemed:	1 year		3 years		5 years		10 years
Class C	$	236	$	729	$	1,249	$	2,675

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

<b>Annual Fund Operating Expenses</b><br/><br/>(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

April 30, 2020

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The expense information shown in the table above differs from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

<b>Example</b>

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the examples for Class A, Class C, Class T and Class Y are based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

<b>If shares are redeemed:</b>

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

<b>If shares are not redeemed:</b>

ASG Global Alternatives Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

1.15%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.17%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[1]

Total annual fund operating expenses

rr_ExpensesOverAssets

1.59%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.58%

1 year

rr_ExpenseExampleYear01

$ 726

3 years

rr_ExpenseExampleYear03

1,047

5 years

rr_ExpenseExampleYear05

1,389

10 years

rr_ExpenseExampleYear10

$ 2,354

ASG Global Alternatives Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

1.15%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.17%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[1]

Total annual fund operating expenses

rr_ExpensesOverAssets

2.34%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

2.33%

1 year

rr_ExpenseExampleYear01

$ 336

3 years

rr_ExpenseExampleYear03

729

5 years

rr_ExpenseExampleYear05

1,249

10 years

rr_ExpenseExampleYear10

2,675

1 year

rr_ExpenseExampleNoRedemptionYear01

236

3 years

rr_ExpenseExampleNoRedemptionYear03

729

5 years

rr_ExpenseExampleNoRedemptionYear05

1,249

10 years

rr_ExpenseExampleNoRedemptionYear10

$ 2,675

ASG Global Alternatives Fund | Class N

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

1.15%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.11%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[1]

Total annual fund operating expenses

rr_ExpensesOverAssets

1.28%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.28%

1 year

rr_ExpenseExampleYear01

$ 130

3 years

rr_ExpenseExampleYear03

406

5 years

rr_ExpenseExampleYear05

702

10 years

rr_ExpenseExampleYear10

$ 1,545

ASG Global Alternatives Fund | Class T

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

1.15%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.17%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[1]

Total annual fund operating expenses

rr_ExpensesOverAssets

1.59%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.58%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other expenses are estimated for the current fiscal year.

1 year

rr_ExpenseExampleYear01

$ 407

3 years

rr_ExpenseExampleYear03

738

5 years

rr_ExpenseExampleYear05

1,093

10 years

rr_ExpenseExampleYear10

$ 2,091

ASG Global Alternatives Fund | Class Y

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

1.15%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.17%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[1]

Total annual fund operating expenses

rr_ExpensesOverAssets

1.34%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.33%

1 year

rr_ExpenseExampleYear01

$ 135

3 years

rr_ExpenseExampleYear03

423

5 years

rr_ExpenseExampleYear05

733

10 years

rr_ExpenseExampleYear10

$ 1,611

[1] The expense information shown in the table above differs from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.

[2] AlphaSimplex Group, LLC (“AlphaSimplex” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.54%, 2.29%, 1.24%, 1.54% and 1.29% of the Fund’s average daily net assets for Class A, Class C, Class N, Class T and Class Y shares, respectively, exclusive of brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below the applicable expense limitations for Class A, Class C, Class N, Class T and Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

[3] Other expenses are estimated for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Natixis Funds Trust II
Prospectus Date	rr_ProspectusDate	May 01, 2018
Document Creation Date	dei_DocumentCreationDate	Oct. 31, 2018