Shareholder Report, Holdings (Details)	Aug. 31, 2026
C000005539 \| New York
Holdings [Line Items]
Percent of Net Asset Value	94.00%
C000005539 \| Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000005539 \| Investment TypeOther Holdings Grouping
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000005539 \| Dedicated Tax Revenue
Holdings [Line Items]
Percent of Net Asset Value	20.10%
C000005539 \| Educational Revenue
Holdings [Line Items]
Percent of Net Asset Value	15.80%
C000005539 \| Air & Sea Transportation
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000005539 \| Housing Finance Revenue
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000005539 \| Hospital Revenue
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000005539 \| Electric Revenue
Holdings [Line Items]
Percent of Net Asset Value	5.00%
C000005539 \| General Obligations - Local
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000005539 \| Water & Sewer Revenue
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000005539 \| Industrial & Pollution Control Revenue
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000005539 \| Other 2
Holdings [Line Items]
Percent of Net Asset Value	12.50%
C000193178 \| New York
Holdings [Line Items]
Percent of Net Asset Value	94.00%
C000193178 \| Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000193178 \| Investment TypeOther Holdings Grouping
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000193178 \| Dedicated Tax Revenue
Holdings [Line Items]
Percent of Net Asset Value	20.10%
C000193178 \| Educational Revenue
Holdings [Line Items]
Percent of Net Asset Value	15.80%
C000193178 \| Air & Sea Transportation
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000193178 \| Housing Finance Revenue
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000193178 \| Hospital Revenue
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000193178 \| Electric Revenue
Holdings [Line Items]
Percent of Net Asset Value	5.00%
C000193178 \| General Obligations - Local
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000193178 \| Water & Sewer Revenue
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000193178 \| Industrial & Pollution Control Revenue
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000193178 \| Other 2
Holdings [Line Items]
Percent of Net Asset Value	12.50%