497

Loomis Sayles Funds II

Exhibit Index

Exhibits for Item 28 of Form N-1A

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

LOOMIS SAYLES INVESTMENT GRADE BOND FUND

Supplement dated July 1, 2014 to the Loomis Sayles Investment Grade Bond Fund Summary Prospectus

and Prospectus, each dated February 1, 2014 as may be revised and supplemented from time to time.

Effective July 1, 2014, NGAM Advisors, L.P. (“NGAM Advisors”), has given a binding contractual undertaking to the Loomis Sayles Investment Grade Bond Fund to waive transfer agency fees for Class N shares of the Loomis Sayles Investment Grade Bond Fund.

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 Loomis Sayles Investment Grade Bond Fund:

Annual Fund Operating Expenses

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

	Class A			Class B			Class C			Class N			Class Y			Admin Class
Management fees		0.40	%		0.40	%		0.40	%		0.40	%		0.40	%		0.40	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		1.00	%		0.00	%		0.00	%		0.25	%
Other expenses		0.18	%		0.18	%		0.18	%		0.38	%		0.18	%		0.43	% 1
Total annual fund operating expenses		0.83	%		1.58	%		1.58	%		0.78	%		0.58	%		1.08	%
Fee waiver and/or expense reimbursement2,3		0.00	%		0.00	%		0.00	%		0.31	%		0.00	%		0.00	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		0.83	%		1.58	%		1.58	%		0.47	%		0.58	%		1.08	%

1 Other expenses include an administrative services fee of 0.25% for Admin Class shares.

2 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund’s average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through January 31, 2015 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund’s average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively. 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.

3 NGAM 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 January 31, 2016 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 for Class N is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first 19 months 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	$	531	$	703	$	890	$	1,429
Class B	$	661	$	799	$	1,060	$	1,677
Class C	$	261	$	499	$	860	$	1,878
Class N	$	48	$	199	$	384	$	920
Class Y	$	59	$	186	$	324	$	726
Admin Class	$	110	$	343	$	595	$	1,317

If shares are not redeemed:

	1 year		3 years		5 years		10 years
Class B	$	161	$	499	$	860	$	1,677
Class C	$	161	$	499	$	860	$	1,878

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

LOOMIS SAYLES FUNDS II

Prospectus Date

rr_ProspectusDate

Feb. 01, 2014

Supplement [Text Block]

lsfii1_SupplementTextBlock

LOOMIS SAYLES INVESTMENT GRADE BOND FUND

Supplement dated July 1, 2014 to the Loomis Sayles Investment Grade Bond Fund Summary Prospectus

and Prospectus, each dated February 1, 2014 as may be revised and supplemented from time to time.

Effective July 1, 2014, NGAM Advisors, L.P. (“NGAM Advisors”), has given a binding contractual undertaking to the Loomis Sayles Investment Grade Bond Fund to waive transfer agency fees for Class N shares of the Loomis Sayles Investment Grade Bond Fund.

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 Loomis Sayles Investment Grade Bond Fund:

Annual Fund Operating Expenses

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

	Class A			Class B			Class C			Class N			Class Y			Admin Class
Management fees		0.40	%		0.40	%		0.40	%		0.40	%		0.40	%		0.40	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		1.00	%		0.00	%		0.00	%		0.25	%
Other expenses		0.18	%		0.18	%		0.18	%		0.38	%		0.18	%		0.43	% 1
Total annual fund operating expenses		0.83	%		1.58	%		1.58	%		0.78	%		0.58	%		1.08	%
Fee waiver and/or expense reimbursement2,3		0.00	%		0.00	%		0.00	%		0.31	%		0.00	%		0.00	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		0.83	%		1.58	%		1.58	%		0.47	%		0.58	%		1.08	%

1 Other expenses include an administrative services fee of 0.25% for Admin Class shares.

2 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund’s average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through January 31, 2015 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund’s average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively. 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.

3 NGAM 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 January 31, 2016 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 for Class N is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first 19 months 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	$	531	$	703	$	890	$	1,429
Class B	$	661	$	799	$	1,060	$	1,677
Class C	$	261	$	499	$	860	$	1,878
Class N	$	48	$	199	$	384	$	920
Class Y	$	59	$	186	$	324	$	726
Admin Class	$	110	$	343	$	595	$	1,317

If shares are not redeemed:

	1 year		3 years		5 years		10 years
Class B	$	161	$	499	$	860	$	1,677
Class C	$	161	$	499	$	860	$	1,878

Loomis Sayles Investment Grade Bond Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

lsfii1_SupplementTextBlock

LOOMIS SAYLES INVESTMENT GRADE BOND FUND

Supplement dated July 1, 2014 to the Loomis Sayles Investment Grade Bond Fund Summary Prospectus

and Prospectus, each dated February 1, 2014 as may be revised and supplemented from time to time.

Effective July 1, 2014, NGAM Advisors, L.P. (“NGAM Advisors”), has given a binding contractual undertaking to the Loomis Sayles Investment Grade Bond Fund to waive transfer agency fees for Class N shares of the Loomis Sayles Investment Grade Bond Fund.

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 Loomis Sayles Investment Grade Bond Fund:

Annual Fund Operating Expenses

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

	Class A			Class B			Class C			Class N			Class Y			Admin Class
Management fees		0.40	%		0.40	%		0.40	%		0.40	%		0.40	%		0.40	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%		1.00	%		0.00	%		0.00	%		0.25	%
Other expenses		0.18	%		0.18	%		0.18	%		0.38	%		0.18	%		0.43	% 1
Total annual fund operating expenses		0.83	%		1.58	%		1.58	%		0.78	%		0.58	%		1.08	%
Fee waiver and/or expense reimbursement2,3		0.00	%		0.00	%		0.00	%		0.31	%		0.00	%		0.00	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		0.83	%		1.58	%		1.58	%		0.47	%		0.58	%		1.08	%

1 Other expenses include an administrative services fee of 0.25% for Admin Class shares.

2 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund’s average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through January 31, 2015 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund’s average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively. 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.

3 NGAM 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 January 31, 2016 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 for Class N is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first 19 months 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	$	531	$	703	$	890	$	1,429
Class B	$	661	$	799	$	1,060	$	1,677
Class C	$	261	$	499	$	860	$	1,878
Class N	$	48	$	199	$	384	$	920
Class Y	$	59	$	186	$	324	$	726
Admin Class	$	110	$	343	$	595	$	1,317

If shares are not redeemed:

	1 year		3 years		5 years		10 years
Class B	$	161	$	499	$	860	$	1,677
Class C	$	161	$	499	$	860	$	1,878

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses

(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

January 31, 2015

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

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 example for Class N is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first 19 months 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

If shares are redeemed:

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

rr_ExpenseExampleNoRedemptionByYearCaption

If shares are not redeemed:

Loomis Sayles Investment Grade Bond Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.40%

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.18%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.83%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

^[1],[2]

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

rr_NetExpensesOverAssets

0.83%

1 year

rr_ExpenseExampleYear01

$ 531

3 years

rr_ExpenseExampleYear03

703

5 years

rr_ExpenseExampleYear05

890

10 years

rr_ExpenseExampleYear10

1,429

Loomis Sayles Investment Grade Bond Fund | Class B

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.40%

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

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.18%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.58%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

^[1],[2]

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

rr_NetExpensesOverAssets

1.58%

1 year

rr_ExpenseExampleYear01

661

3 years

rr_ExpenseExampleYear03

799

5 years

rr_ExpenseExampleYear05

1,060

10 years

rr_ExpenseExampleYear10

1,677

1 year

rr_ExpenseExampleNoRedemptionYear01

161

3 years

rr_ExpenseExampleNoRedemptionYear03

499

5 years

rr_ExpenseExampleNoRedemptionYear05

860

10 years

rr_ExpenseExampleNoRedemptionYear10

1,677

Loomis Sayles Investment Grade Bond Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.40%

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

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.18%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.58%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

^[1],[2]

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

rr_NetExpensesOverAssets

1.58%

1 year

rr_ExpenseExampleYear01

261

3 years

rr_ExpenseExampleYear03

499

5 years

rr_ExpenseExampleYear05

860

10 years

rr_ExpenseExampleYear10

1,878

1 year

rr_ExpenseExampleNoRedemptionYear01

161

3 years

rr_ExpenseExampleNoRedemptionYear03

499

5 years

rr_ExpenseExampleNoRedemptionYear05

860

10 years

rr_ExpenseExampleNoRedemptionYear10

1,878

Loomis Sayles Investment Grade Bond Fund | Class N

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.40%

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

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.38%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.78%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.31%

^[1],[2]

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

rr_NetExpensesOverAssets

0.47%

1 year

rr_ExpenseExampleYear01

48

3 years

rr_ExpenseExampleYear03

199

5 years

rr_ExpenseExampleYear05

384

10 years

rr_ExpenseExampleYear10

920

Loomis Sayles Investment Grade Bond Fund | Class Y

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.40%

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

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.18%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.58%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

^[1],[2]

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

rr_NetExpensesOverAssets

0.58%

1 year

rr_ExpenseExampleYear01

59

3 years

rr_ExpenseExampleYear03

186

5 years

rr_ExpenseExampleYear05

324

10 years

rr_ExpenseExampleYear10

726

Loomis Sayles Investment Grade Bond Fund | Admin Class

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.40%

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

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.43%

^[3]

Total annual fund operating expenses

rr_ExpensesOverAssets

1.08%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

^[1],[2]

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

rr_NetExpensesOverAssets

1.08%

1 year

rr_ExpenseExampleYear01

110

3 years

rr_ExpenseExampleYear03

343

5 years

rr_ExpenseExampleYear05

595

10 years

rr_ExpenseExampleYear10

$ 1,317

[1] 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund's average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through January 31, 2015 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 0.95%, 1.70%, 1.70%, 0.65%, 0.70% and 1.20% of the Fund's average daily net assets for Class A, B, C, N , Y and Admin Class shares, respectively. 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.

[2] NGAM 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 January 31, 2016 and may be terminated before then only with the consent of the Fund's Board of Trustees.

[3] Other expenses include an administrative services fee of 0.25% for Admin Class shares.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	Other
Document Period End Date	dei_DocumentPeriodEndDate	Sep. 30, 2013
Registrant Name	dei_EntityRegistrantName	LOOMIS SAYLES FUNDS II
Central Index Key	dei_EntityCentralIndexKey	0000872649
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Jul. 01, 2014
Document Effective Date	dei_DocumentEffectiveDate	Jul. 01, 2014
Prospectus Date	rr_ProspectusDate	Feb. 01, 2014

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	LOOMIS SAYLES FUNDS II
Prospectus Date	rr_ProspectusDate	Feb. 01, 2014
Document Creation Date	dei_DocumentCreationDate	Jul. 01, 2014