v3.25.4
S000001587 [Member] Shareholder Fees - Investment Grade Bond Fund
Oct. 31, 2025
Class Y  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Class C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Class S  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75%
Maximum Deferred Sales Charge (as a percentage) 1.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Class R6  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Class M  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage) 0.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
[1] The Maximum Deferred Sales Charge (Load) is charged on the lesser of the purchase price of the Shares being redeemed or the net asset value of those Shares at the time of redemption.