Expense Example	Feb. 28, 2026 USD ($)
The Ambassador Fund \| Class S Shares
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 169
Expense Example, with Redemption, 3 Years	523
Expense Example, with Redemption, 5 Years	902
Expense Example, with Redemption, 10 Years	1,965
The Ambassador Fund \| Institutional Class Shares
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	144
Expense Example, with Redemption, 3 Years	446
Expense Example, with Redemption, 5 Years	771
Expense Example, with Redemption, 10 Years	1,691
The Diplomat Fund \| The Diplomat Fund Shares
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	104
Expense Example, with Redemption, 3 Years	922
Expense Example, with Redemption, 5 Years	1,758
Expense Example, with Redemption, 10 Years	$ 3,931

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear01
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear03
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear05
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

Name:	oef_ExpenseExampleYear10
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a

Name:	dei_LegalEntityAxis=imstii_S000074228Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	oef_ClassAxis=imstii_C000274169Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	oef_ClassAxis=imstii_C000231837Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	dei_LegalEntityAxis=imstii_S000077375Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	oef_ClassAxis=imstii_C000237757Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: