Shareholder Report, Holdings (Details)	Aug. 31, 2025
C000224642 \| Certificates of Deposit
Holdings [Line Items]
Percent of Net Asset Value	1.00%
C000224642 \| Commercial Paper
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000224642 \| Repurchase Agreements
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000224642 \| Other Repurchase Agreements
Holdings [Line Items]
Percent of Net Asset Value	25.00%
C000224642 \| Corporate Bonds
Holdings [Line Items]
Percent of Net Asset Value	27.30%
C000224642 \| Asset-Backed Securities
Holdings [Line Items]
Percent of Net Asset Value	35.30%
C000224641 \| Certificates of Deposit
Holdings [Line Items]
Percent of Net Asset Value	1.00%
C000224641 \| Commercial Paper
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000224641 \| Repurchase Agreements
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000224641 \| Other Repurchase Agreements
Holdings [Line Items]
Percent of Net Asset Value	25.00%
C000224641 \| Corporate Bonds
Holdings [Line Items]
Percent of Net Asset Value	27.30%
C000224641 \| Asset-Backed Securities
Holdings [Line Items]
Percent of Net Asset Value	35.30%
C000224644 \| 181 Days or more
Holdings [Line Items]
Percent of Net Asset Value	23.20%
C000224644 \| 91-180 Days
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000224644 \| 31-90 Days
Holdings [Line Items]
Percent of Net Asset Value	11.10%
C000224644 \| 8-30 Days
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000224644 \| 1-7 Days
Holdings [Line Items]
Percent of Net Asset Value	54.70%
C000224644 \| SectorSenior Care
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000224644 \| SectorDedicated Tax
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000224644 \| SectorWater & Sewer
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000224644 \| SectorHigher Education
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000224644 \| SectorPort
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000224644 \| SectorAirport
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000224644 \| SectorElectric & Gas
Holdings [Line Items]
Percent of Net Asset Value	5.00%
C000224644 \| SectorHospital
Holdings [Line Items]
Percent of Net Asset Value	10.70%
C000224644 \| SectorMulti-Family Housing
Holdings [Line Items]
Percent of Net Asset Value	13.00%
C000224644 \| SectorIndustrial Development/Pollution Control
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000224644 \| SectorGeneral Obligation- Local
Holdings [Line Items]
Percent of Net Asset Value	27.90%
C000224643 \| 181 Days or more
Holdings [Line Items]
Percent of Net Asset Value	23.20%
C000224643 \| 91-180 Days
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000224643 \| 31-90 Days
Holdings [Line Items]
Percent of Net Asset Value	11.10%
C000224643 \| 8-30 Days
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000224643 \| 1-7 Days
Holdings [Line Items]
Percent of Net Asset Value	54.70%
C000224643 \| SectorSenior Care
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000224643 \| SectorDedicated Tax
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000224643 \| SectorWater & Sewer
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000224643 \| SectorHigher Education
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000224643 \| SectorPort
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000224643 \| SectorAirport
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000224643 \| SectorElectric & Gas
Holdings [Line Items]
Percent of Net Asset Value	5.00%
C000224643 \| SectorHospital
Holdings [Line Items]
Percent of Net Asset Value	10.70%
C000224643 \| SectorMulti-Family Housing
Holdings [Line Items]
Percent of Net Asset Value	13.00%
C000224643 \| SectorIndustrial Development/Pollution Control
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000224643 \| SectorGeneral Obligation- Local
Holdings [Line Items]
Percent of Net Asset Value	27.90%