v3.26.1
S000051748 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
FTSE World Government Bond Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 7.55% (3.53%) 0.57% 0.54%
Performance Inception Date     Dec. 17, 2015  
Bloomberg Global Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 8.17% (2.15%) 1.29% 1.26%
Performance Inception Date     Dec. 17, 2015  
Class I        
Prospectus [Line Items]        
Average Annual Return, Percent 10.13% (3.04%) (0.22%) (0.17%)
Performance Inception Date     Dec. 17, 2015  
Class I | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent 8.97% (3.38%) (0.59%) (0.54%)
Performance Inception Date     Dec. 17, 2015  
Class I | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent 5.99% (2.40%) (0.29%) (0.25%)
Performance Inception Date     Dec. 17, 2015  
Class N        
Prospectus [Line Items]        
Average Annual Return, Percent 9.89% (3.27%) (0.46%) (0.42%)
Performance Inception Date     Dec. 17, 2015  
I2        
Prospectus [Line Items]        
Average Annual Return, Percent [1] 10.00% (3.16%) (0.34%) (0.29%)
Performance Inception Date [1]     Dec. 17, 2015  
R6        
Prospectus [Line Items]        
Average Annual Return, Percent [2] 10.13% (3.04%) (0.22%) (0.17%)
Performance Inception Date [2]     Dec. 17, 2015  
[1]
Class I2 shares of the Fund were not available for purchase until November 3, 2025. Performance shown prior to that inception date is that of Class I shares (which invest in the same portfolio of securities as Class I2 shares), reduced by an estimate of the additional operating expenses that would have applied to Class I2 shares prior to November 3, 2025. The actual additional expenses incurred had Class I2 shares begun operations earlier may have been greater or less than that estimate.
[2] Class R6 shares of the Fund have not commenced operations as of the date of this Prospectus. For this reason, the performance information shown is for another class of shares (Class I shares) that is invested in the same portfolio of securities as Class R6 shares. Annual returns of the share classes would differ only to the extent that Class R6 shares and Class I shares have different expenses.