v3.26.1
S000107710 [Member] Expense Example - NORTHERN TRUST CALIFORNIA TAX-EXEMPT BOND ETF - NORTHERN TRUST CALIFORNIA TAX-EXEMPT BOND ETF
Aug. 21, 2026
USD ($)
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 6
Expense Example, with Redemption, 3 Years $ 19