Shareholder Report, Holdings (Details)	Aug. 31, 2025
C000005539 \| New York
Holdings [Line Items]
Percent of Net Asset Value	93.60%
C000005539 \| Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000005539 \| Other Holdings Grouping
Holdings [Line Items]
Percent of Net Asset Value	1.00%
C000005539 \| Dedicated Tax Revenue
Holdings [Line Items]
Percent of Net Asset Value	20.20%
C000005539 \| Educational Revenue
Holdings [Line Items]
Percent of Net Asset Value	15.50%
C000005539 \| Air & Sea Transportation
Holdings [Line Items]
Percent of Net Asset Value	13.80%
C000005539 \| Housing Finance Revenue
Holdings [Line Items]
Percent of Net Asset Value	13.50%
C000005539 \| Hospital Revenue
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000005539 \| Electric Revenue
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000005539 \| General Obligations - Local
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000005539 \| Water & Sewer Revenue
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000005539 \| Industrial & Pollution Control Revenue
Holdings [Line Items]
Percent of Net Asset Value	3.00%
C000005539 \| Other 2
Holdings [Line Items]
Percent of Net Asset Value	12.80%
C000193178 \| New York
Holdings [Line Items]
Percent of Net Asset Value	93.60%
C000193178 \| Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000193178 \| Other Holdings Grouping
Holdings [Line Items]
Percent of Net Asset Value	1.00%
C000193178 \| Dedicated Tax Revenue
Holdings [Line Items]
Percent of Net Asset Value	20.20%
C000193178 \| Educational Revenue
Holdings [Line Items]
Percent of Net Asset Value	15.50%
C000193178 \| Air & Sea Transportation
Holdings [Line Items]
Percent of Net Asset Value	13.80%
C000193178 \| Housing Finance Revenue
Holdings [Line Items]
Percent of Net Asset Value	13.50%
C000193178 \| Hospital Revenue
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000193178 \| Electric Revenue
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000193178 \| General Obligations - Local
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000193178 \| Water & Sewer Revenue
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000193178 \| Industrial & Pollution Control Revenue
Holdings [Line Items]
Percent of Net Asset Value	3.00%
C000193178 \| Other 2
Holdings [Line Items]
Percent of Net Asset Value	12.80%