v3.26.1

Shareholder Fees	Aug. 18, 2026 USD ($)
VanEck U.S. Equity Buffer ETF - July \| VanEck U.S. Equity Buffer ETF - July Class
Prospectus [Line Items]
Shareholder Fee, Other	$ 0

X

- References

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

+ Details

Name:	oef_ProspectusLineItems
Namespace Prefix:	oef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 2

+ Details

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

X

- Details

Name:	dei_LegalEntityAxis=ck0001137360_S000106200Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	oef_ClassAxis=ck0001137360_C000277036Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: