v3.26.3
Shareholder Report, Holdings (Details)
Jul. 31, 2026
C000173018 [Member] | N A not applicable [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30% [1]
C000173018 [Member] | Moody's, Aaa Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.20% [1]
C000173018 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40% [1]
C000173018 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 32.60% [1]
C000173018 [Member] | Standard & Poor's, A Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00% [1]
C000173018 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 52.50% [1]
C000173018 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000173018 [Member] | Government Related [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.20%
C000173018 [Member] | Securitized [Member]  
Holdings [Line Items]  
Percent of Total Investments 30.80%
C000173018 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000173018 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 28.80%
C000180107 [Member] | Moody's, Aaa Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.10% [2]
C000180107 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20% [2]
C000180107 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.60% [2]
C000180107 [Member] | Standard & Poor's, A Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.50% [2]
C000180107 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 71.60% [2]
C000180107 [Member] | Government Related [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000180107 [Member] | Securitized [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.60%
C000180107 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000180107 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 64.10%
C000193700 [Member] | N A not applicable [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40% [3]
C000193700 [Member] | Moody's, Aaa Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.60% [3]
C000193700 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70% [3]
C000193700 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.40% [3]
C000193700 [Member] | Standard & Poor's, A Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.10% [3]
C000193700 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 71.80% [3]
C000193700 [Member] | BB or Lower [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00% [3]
C000193700 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000193700 [Member] | Government Related [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000193700 [Member] | Securitized [Member]  
Holdings [Line Items]  
Percent of Total Investments 25.50%
C000193700 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.50%
C000193700 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 45.40%
C000209930 [Member] | N A not applicable [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70% [4]
C000209930 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60% [4]
C000209930 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20% [4]
C000209930 [Member] | BB or Lower [Member]  
Holdings [Line Items]  
Percent of Total Investments 95.50% [4]
C000209930 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
C000209930 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.30%
C000248461 [Member] | Moody's, Aaa Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00% [5]
C000248461 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00% [5]
C000248461 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 18.80% [5]
C000248461 [Member] | Standard & Poor's, A Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.30% [5]
C000248461 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 43.90% [5]
C000248461 [Member] | BB or Lower [Member]  
Holdings [Line Items]  
Percent of Total Investments 17.00% [5]
C000248461 [Member] | Government Related [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.80%
C000248461 [Member] | Securitized [Member]  
Holdings [Line Items]  
Percent of Total Investments 41.50%
C000248461 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 35.50%
C000248461 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.20%
C000248462 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000248462 [Member] | N A not applicable [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50% [6]
C000248462 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [6]
C000248462 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 76.40% [6]
C000248462 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50% [6]
C000248462 [Member] | BB or Lower [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.50% [6]
C000248462 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 13.40%
C000248462 [Member] | FINLAND  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000248462 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 9.60%
C000248462 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000248462 [Member] | IRELAND  
Holdings [Line Items]  
Percent of Total Investments 1.40%
C000248462 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000248462 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000248462 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248462 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 13.70%
C000248462 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 47.00%
C000248462 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000248462 [Member] | Corporate Bond Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.00%
C000248462 [Member] | US Government Corporations and Agencies Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000248463 [Member] | Moody's, Aaa Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.50% [7]
C000248463 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 22.70% [7]
C000248463 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 18.80% [7]
C000248463 [Member] | Standard & Poor's, A Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 31.60% [7]
C000248463 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.40% [7]
C000248463 [Member] | Securitized [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.90%
C000248463 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 61.80%
C000248463 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
C000248463 [Member] | Certificates of Deposit [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000248463 [Member] | Commercial Paper [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.50%
C000255190 [Member] | N A not applicable [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [8]
C000255190 [Member] | Moody's, Aaa Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.10% [8]
C000255190 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50% [8]
C000255190 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 25.70% [8]
C000255190 [Member] | Standard & Poor's, A Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 50.50% [8]
C000255190 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 18.00% [8]
C000255190 [Member] | BB or Lower [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.10% [8]
C000255190 [Member] | Securitized [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.90%
C000255190 [Member] | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000263343 [Member] | N A not applicable [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20% [9]
C000263343 [Member] | Moody's, Aaa Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.00% [9]
C000263343 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 42.60% [9]
C000263343 [Member] | Standard & Poor's, A Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 33.10% [9]
C000263343 [Member] | Standard & Poor's, AA Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.50% [9]
C000263343 [Member] | BB or Lower [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.60% [9]
C000263343 [Member] | Securitized [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.30%
C000263343 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000263343 [Member] | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000264202 [Member] | N A not applicable [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.10% [10]
C000264202 [Member] | N R not rated [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50% [10]
C000264202 [Member] | Standard & Poor's, BBB Rating [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.00% [10]
C000264202 [Member] | BB or Lower [Member]  
Holdings [Line Items]  
Percent of Total Investments 94.40% [10]
C000264202 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000264202 [Member] | Government Related [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000264202 [Member] | Corporate Debt Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.80%
C000264202 [Member] | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
[1] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, an average of the ratings is used; if two of the three agencies rate a security, an average of the two is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below‑investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
[2] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
[3] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
[4] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
[5] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
[6] The ratings disclosed are the highest rating given by one of the following national rating agencies: Standard & Poor’s (S&P), Moody’s Investors Service, Inc. (Moody’s) or Fitch, Inc (Fitch). This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Credit ratings are subject to change. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC, CC, C and D are below-investment grade ratings. Holdings designated N/R are not rated by these national ratings agencies.
[7] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
[8] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
[9] The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P, Fitch. DBRS or KBRA. Ratings provided by S&P, Moody’s and Fitch are used where available, while DBRS and KBRA are used to supplement if no other ratings are available. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. If ratings are provided only by DBRS and KBRA, the lower of the two ratings is used AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by these rating agencies and, where applicable, include net derivative positions.
[10]
The Fund uses credit quality ratings for its portfolio securities provided by Moody’s, S&P and Fitch. If all three of Moody’s, S&P, and Fitch provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.