v3.26.1

S000076879 [Member] Shareholder Fees	Nov. 30, 2025 USD ($)
AB Tax-Aware Short Duration Municipal ETF \| AB Tax-Aware Short Duration Municipal ETF
Prospectus [Line Items]
Shareholder Fee, Other	$ 0

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- References

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

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- References

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

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