v3.26.1
Performance Management - Custom Global Equity Allocation Fund
Aug. 31, 2025
Class M Shares (GEAMX)  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]
Performance history will be included for the Fund after the Fund has been in operation for one calendar year. Until that time, visit www.nb.com or call 800-366-6264 for performance information. Past performance (before and after taxes) is not a prediction of future results.
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not a prediction of future results.
Performance One Year or Less [Text] Performance history will be included for the Fund after the Fund has been in operation for one calendar year. Until that time, visit www.nb.com or call 800-366-6264 for performance information.
Performance Availability Website Address [Text] www.nb.com
Performance Availability Phone [Text] 800-366-6264
Class P Shares (GEAPX)  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] PERFORMANCE
Performance Narrative [Text Block]
Performance history will be included for the Fund after the Fund has been in operation for one calendar year. Until that time, visit www.nb.com or call 800-366-6264 for performance information. Past performance (before and after taxes) is not a prediction of future results.
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not a prediction of future results.
Performance One Year or Less [Text] Performance history will be included for the Fund after the Fund has been in operation for one calendar year. Until that time, visit www.nb.com or call 800-366-6264 for performance information.
Performance Availability Website Address [Text] www.nb.com
Performance Availability Phone [Text] 800-366-6264