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	Jun. 28, 2019
Registrant Name	dei_EntityRegistrantName	Natixis Funds Trust II
Central Index Key	dei_EntityCentralIndexKey	0000052136
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Jun. 28, 2019
Document Effective Date	dei_DocumentEffectiveDate	Jun. 28, 2019
Prospectus Date	rr_ProspectusDate	Jun. 28, 2019
Entity Inv Company Type	dei_EntityInvCompanyType	N-1A

XML

Jun. 28, 2019

NATIXIS FUNDS

Supplement dated June 28, 2019 to the Natixis Funds Prospectus and Summary Prospectuses, each dated April 1, 2019, as may be revised or supplemented from time to time, for the following funds:

LOOMIS SAYLES GLOBAL GROWTH FUND

(the “Fund”)

Effective July 1, 2019, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.25%, 2.00%, 0.95%, 1.25% and 1.00% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021.

Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” in the Summary Prospectus 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		0.80	%		0.80	%		0.80	%		0.80	%		0.80	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses1		0.52	%		0.52	%		0.50	%		0.52	%2		0.52	%
Total annual fund operating expenses		1.57	%		2.32	%		1.30	%		1.57	%		1.32	%
Fee waiver and/or expense reimbursement3,4		0.32	%		0.32	%		0.35	%		0.32	%		0.32	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.25	%		2.00	%		0.95	%		1.25	%		1.00	%

¹ Other expenses have been restated to reflect current custodian fees for the Fund effective October 1, 2018.

² Other expenses are estimated for the current fiscal year.

³ Loomis, Sayles & Company, L.P. (“Loomis Sayles” 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 1.25%, 2.00%, 0.95%, 1.25%, and 1.00% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021 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, C, N, T and 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 fees or expenses were waived/reimbursed.

⁴ Natixis Advisors, L.P. (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through March 31, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees.

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 example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements will only be in place through the dates 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	$	695	$	989	$	1,330	$	2,289
Class C	$	303	$	669	$	1,188	$	2,612
Class N	$	97	$	350	$	653	$	1,513
Class T	$	374	$	679	$	1,031	$	2,023
Class Y	$	102	$	362	$	669	$	1,540

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	203	$	669	$	1,188	$	2,612

VAUGHAN NELSON SELECT FUND

(the “Fund”)

Effective July 1, 2019, the Fund’s Board of Trustees approved a proposal to reduce the management fee rate on assets from 0.80% to 0.75%. In addition, Natixis Advisors, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.15%, 1.90%, 0.85%, 1.15% and 0.90% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021.

Accordingly, 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 fees1		0.75	%		0.75	%		0.75	%		0.75	%		0.75	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.22	%		0.21	%		12.74	%		0.22	%2		0.21	%
Acquired fund fees and expenses3		0.09	%		0.09	%		0.09	%		0.09	%		0.09	%
Total annual fund operating expenses		1.31	%		2.05	%		13.58	%		1.31	%		1.05	%
Fee waiver and/or expense reimbursement4,5		0.07	%		0.06	%		12.64	%		0.07	%		0.06	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.24	%		1.99	%		0.94	%		1.24	%		0.99	%

¹  The Fund’s operating expenses have been restated to reflect a reduction in management fees, effective July 1, 2019.

²  Other expenses are estimated for the current fiscal year.

³  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.

⁴  Natixis Advisors, L.P. (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.15%, 1.90%, 0.85%, 1.15% and 0.90% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment 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, C, N, T and 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 fees or expenses were waived/reimbursed.

⁵ Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through March 31, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees.

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 example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. Although your actual costs may be high or lower, based on these assumptions your costs would be:

If shares are redeemed:
	1 year		3 years		5 years		10 years
Class A	$	694	$	955	$	1,241	$	2,053
Class C	$	302	$	632	$	1,093	$	2,371
Class N	$	96	$	1,885	$	4,274	$	8,668
Class T	$	373	$	643	$	939	$	1,779
Class Y	$	101	$	323	$	569	$	1,273

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	202	$	632	$	1,093	$	2,371

NATIXIS FUNDS

Supplement dated June 28, 2019 to the Natixis Funds Prospectuses and Summary Prospectuses, each dated May 1, 2019, as may be revised or supplemented from time to time, for the following funds:

VAUGHAN NELSON VALUE OPPORTUNITY FUND

(the “Fund”)

Effective July 1, 2019, Natixis Advisors, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.20%, 1.95%, 0.90%, 1.20% and 0.95% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2021.

Accordingly, 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		0.80	%		0.80	%		0.80	%		0.80	%		0.80	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.19	%		0.18	%		0.08	%		0.19	%1		0.19	%
Acquired Fund Fees and Expenses2		0.21	%		0.21	%		0.21	%		0.21	%		0.21	%
Total annual fund operating expenses		1.45	%		2.19	%		1.09	%		1.45	%		1.20	%
Fee waiver and/or expense reimbursement3		0.04	%		0.03	%		0.00	%		0.04	%		0.04	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.41	%		2.16	%		1.09	%		1.41	%		1.16	%

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  The Fund’s investment adviser has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.20%, 1.95%, 0.90%, 1.20% and 0.95% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2021 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment 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, C, N, T and 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 fees or expenses were 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 example for Class A, C, T and Y shares is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements 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	$	710	$	1,000	$	1,315	$	2,204
Class C	$	319	$	680	$	1,169	$	2,519
Class N	$	111	$	347	$	601	$	1,329
Class T	$	390	$	690	$	1,015	$	1,936
Class Y	$	118	$	374	$	652	$	1,448

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	219	$	680	$	1,169	$	2,519

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

Natixis Funds Trust II

Prospectus Date

rr_ProspectusDate

Jun. 28, 2019

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

NATIXIS FUNDS

Supplement dated June 28, 2019 to the Natixis Funds Prospectus and Summary Prospectuses, each dated April 1, 2019, as may be revised or supplemented from time to time, for the following funds:

LOOMIS SAYLES GLOBAL GROWTH FUND

(the “Fund”)

Effective July 1, 2019, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.25%, 2.00%, 0.95%, 1.25% and 1.00% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021.

Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” in the Summary Prospectus 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		0.80	%		0.80	%		0.80	%		0.80	%		0.80	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses1		0.52	%		0.52	%		0.50	%		0.52	%2		0.52	%
Total annual fund operating expenses		1.57	%		2.32	%		1.30	%		1.57	%		1.32	%
Fee waiver and/or expense reimbursement3,4		0.32	%		0.32	%		0.35	%		0.32	%		0.32	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.25	%		2.00	%		0.95	%		1.25	%		1.00	%

¹ Other expenses have been restated to reflect current custodian fees for the Fund effective October 1, 2018.

² Other expenses are estimated for the current fiscal year.

³ Loomis, Sayles & Company, L.P. (“Loomis Sayles” 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 1.25%, 2.00%, 0.95%, 1.25%, and 1.00% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021 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, C, N, T and 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 fees or expenses were waived/reimbursed.

⁴ Natixis Advisors, L.P. (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through March 31, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees.

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 example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements will only be in place through the dates 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	$	695	$	989	$	1,330	$	2,289
Class C	$	303	$	669	$	1,188	$	2,612
Class N	$	97	$	350	$	653	$	1,513
Class T	$	374	$	679	$	1,031	$	2,023
Class Y	$	102	$	362	$	669	$	1,540

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	203	$	669	$	1,188	$	2,612

VAUGHAN NELSON SELECT FUND

(the “Fund”)

Effective July 1, 2019, the Fund’s Board of Trustees approved a proposal to reduce the management fee rate on assets from 0.80% to 0.75%. In addition, Natixis Advisors, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.15%, 1.90%, 0.85%, 1.15% and 0.90% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021.

Accordingly, 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 fees1		0.75	%		0.75	%		0.75	%		0.75	%		0.75	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.22	%		0.21	%		12.74	%		0.22	%2		0.21	%
Acquired fund fees and expenses3		0.09	%		0.09	%		0.09	%		0.09	%		0.09	%
Total annual fund operating expenses		1.31	%		2.05	%		13.58	%		1.31	%		1.05	%
Fee waiver and/or expense reimbursement4,5		0.07	%		0.06	%		12.64	%		0.07	%		0.06	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.24	%		1.99	%		0.94	%		1.24	%		0.99	%

¹  The Fund’s operating expenses have been restated to reflect a reduction in management fees, effective July 1, 2019.

²  Other expenses are estimated for the current fiscal year.

³  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.

⁴  Natixis Advisors, L.P. (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.15%, 1.90%, 0.85%, 1.15% and 0.90% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment 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, C, N, T and 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 fees or expenses were waived/reimbursed.

⁵ Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through March 31, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees.

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 example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. Although your actual costs may be high or lower, based on these assumptions your costs would be:

If shares are redeemed:
	1 year		3 years		5 years		10 years
Class A	$	694	$	955	$	1,241	$	2,053
Class C	$	302	$	632	$	1,093	$	2,371
Class N	$	96	$	1,885	$	4,274	$	8,668
Class T	$	373	$	643	$	939	$	1,779
Class Y	$	101	$	323	$	569	$	1,273

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	202	$	632	$	1,093	$	2,371

NATIXIS FUNDS

Supplement dated June 28, 2019 to the Natixis Funds Prospectuses and Summary Prospectuses, each dated May 1, 2019, as may be revised or supplemented from time to time, for the following funds:

VAUGHAN NELSON VALUE OPPORTUNITY FUND

(the “Fund”)

Effective July 1, 2019, Natixis Advisors, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.20%, 1.95%, 0.90%, 1.20% and 0.95% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2021.

Accordingly, 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		0.80	%		0.80	%		0.80	%		0.80	%		0.80	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.19	%		0.18	%		0.08	%		0.19	%1		0.19	%
Acquired Fund Fees and Expenses2		0.21	%		0.21	%		0.21	%		0.21	%		0.21	%
Total annual fund operating expenses		1.45	%		2.19	%		1.09	%		1.45	%		1.20	%
Fee waiver and/or expense reimbursement3		0.04	%		0.03	%		0.00	%		0.04	%		0.04	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.41	%		2.16	%		1.09	%		1.41	%		1.16	%

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  The Fund’s investment adviser has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.20%, 1.95%, 0.90%, 1.20% and 0.95% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2021 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment 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, C, N, T and 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 fees or expenses were 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 example for Class A, C, T and Y shares is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements 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	$	710	$	1,000	$	1,315	$	2,204
Class C	$	319	$	680	$	1,169	$	2,519
Class N	$	111	$	347	$	601	$	1,329
Class T	$	390	$	690	$	1,015	$	1,936
Class Y	$	118	$	374	$	652	$	1,448

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	219	$	680	$	1,169	$	2,519

Loomis Sayles Global Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

NATIXIS FUNDS

Supplement dated June 28, 2019 to the Natixis Funds Prospectus and Summary Prospectuses, each dated April 1, 2019, as may be revised or supplemented from time to time, for the following funds:

LOOMIS SAYLES GLOBAL GROWTH FUND

(the “Fund”)

Effective July 1, 2019, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.25%, 2.00%, 0.95%, 1.25% and 1.00% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021.

Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” in the Summary Prospectus 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		0.80	%		0.80	%		0.80	%		0.80	%		0.80	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses1		0.52	%		0.52	%		0.50	%		0.52	%2		0.52	%
Total annual fund operating expenses		1.57	%		2.32	%		1.30	%		1.57	%		1.32	%
Fee waiver and/or expense reimbursement3,4		0.32	%		0.32	%		0.35	%		0.32	%		0.32	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.25	%		2.00	%		0.95	%		1.25	%		1.00	%

¹ Other expenses have been restated to reflect current custodian fees for the Fund effective October 1, 2018.

² Other expenses are estimated for the current fiscal year.

³ Loomis, Sayles & Company, L.P. (“Loomis Sayles” 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 1.25%, 2.00%, 0.95%, 1.25%, and 1.00% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021 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, C, N, T and 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 fees or expenses were waived/reimbursed.

⁴ Natixis Advisors, L.P. (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through March 31, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees.

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 example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements will only be in place through the dates 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	$	695	$	989	$	1,330	$	2,289
Class C	$	303	$	669	$	1,188	$	2,612
Class N	$	97	$	350	$	653	$	1,513
Class T	$	374	$	679	$	1,031	$	2,023
Class Y	$	102	$	362	$	669	$	1,540

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	203	$	669	$	1,188	$	2,612

Vaughan Nelson Select Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

NATIXIS FUNDS

Supplement dated June 28, 2019 to the Natixis Funds Prospectus and Summary Prospectuses, each dated April 1, 2019, as may be revised or supplemented from time to time, for the following funds:

VAUGHAN NELSON SELECT FUND

(the “Fund”)

Effective July 1, 2019, the Fund’s Board of Trustees approved a proposal to reduce the management fee rate on assets from 0.80% to 0.75%. In addition, Natixis Advisors, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.15%, 1.90%, 0.85%, 1.15% and 0.90% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021.

Accordingly, 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 fees1		0.75	%		0.75	%		0.75	%		0.75	%		0.75	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.22	%		0.21	%		12.74	%		0.22	%2		0.21	%
Acquired fund fees and expenses3		0.09	%		0.09	%		0.09	%		0.09	%		0.09	%
Total annual fund operating expenses		1.31	%		2.05	%		13.58	%		1.31	%		1.05	%
Fee waiver and/or expense reimbursement4,5		0.07	%		0.06	%		12.64	%		0.07	%		0.06	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.24	%		1.99	%		0.94	%		1.24	%		0.99	%

¹  The Fund’s operating expenses have been restated to reflect a reduction in management fees, effective July 1, 2019.

²  Other expenses are estimated for the current fiscal year.

³  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.

⁴  Natixis Advisors, L.P. (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.15%, 1.90%, 0.85%, 1.15% and 0.90% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2021 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment 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, C, N, T and 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 fees or expenses were waived/reimbursed.

⁵ Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through March 31, 2020 and may be terminated before then only with the consent of the Fund’s Board of Trustees.

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 example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. Although your actual costs may be high or lower, based on these assumptions your costs would be:

If shares are redeemed:
	1 year		3 years		5 years		10 years
Class A	$	694	$	955	$	1,241	$	2,053
Class C	$	302	$	632	$	1,093	$	2,371
Class N	$	96	$	1,885	$	4,274	$	8,668
Class T	$	373	$	643	$	939	$	1,779
Class Y	$	101	$	323	$	569	$	1,273

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	202	$	632	$	1,093	$	2,371

Vaughan Nelson Value Opportunity Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

NATIXIS FUNDS

Supplement dated June 28, 2019 to the Natixis Funds Prospectuses and Summary Prospectuses, each dated May 1, 2019, as may be revised or supplemented from time to time, for the following funds:

VAUGHAN NELSON VALUE OPPORTUNITY FUND

(the “Fund”)

Effective July 1, 2019, Natixis Advisors, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.20%, 1.95%, 0.90%, 1.20% and 0.95% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2021.

Accordingly, 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		0.80	%		0.80	%		0.80	%		0.80	%		0.80	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		0.00	%		0.25	%		0.00	%
Other expenses		0.19	%		0.18	%		0.08	%		0.19	%1		0.19	%
Acquired Fund Fees and Expenses2		0.21	%		0.21	%		0.21	%		0.21	%		0.21	%
Total annual fund operating expenses		1.45	%		2.19	%		1.09	%		1.45	%		1.20	%
Fee waiver and/or expense reimbursement3		0.04	%		0.03	%		0.00	%		0.04	%		0.04	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.41	%		2.16	%		1.09	%		1.41	%		1.16	%

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  The Fund’s investment adviser has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.20%, 1.95%, 0.90%, 1.20% and 0.95% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of acquired fund fees and expenses, brokerage expenses, interest expense, substitute dividend expenses on securities sold short, taxes, and organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2021 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment 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, C, N, T and 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 fees or expenses were 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 example for Class A, C, T and Y shares is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waivers and/or reimbursements 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	$	710	$	1,000	$	1,315	$	2,204
Class C	$	319	$	680	$	1,169	$	2,519
Class N	$	111	$	347	$	601	$	1,329
Class T	$	390	$	690	$	1,015	$	1,936
Class Y	$	118	$	374	$	652	$	1,448

If shares are not redeemed:
	1 year		3 years		5 years		10 years
Class C	$	219	$	680	$	1,169	$	2,519

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Natixis Funds Trust II
Prospectus Date	rr_ProspectusDate	Jun. 28, 2019
Document Creation Date	dei_DocumentCreationDate	Jun. 28, 2019