v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
C000271879 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000271879 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000271879 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 91.00%
C000271879 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 29.30%
C000271879 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 70.70%
C000011654 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000011654 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011654 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000011654 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000011654 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011654 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000011654 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000011654 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000248991 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000248991 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248991 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000248991 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000248991 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248991 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000248991 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000248991 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000011655 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000011655 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011655 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000011655 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000011655 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011655 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000011655 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000011655 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000017907 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000017907 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000017907 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000017907 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000017907 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000017907 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000017907 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000017907 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000227505 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000227505 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000227505 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000227505 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000227505 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000227505 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000227505 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000227505 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000234745 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000234745 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000234745 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000234745 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000234745 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000234745 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000234745 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000234745 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000248673 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000248673 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248673 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000248673 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000248673 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248673 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000248673 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000248673 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000011656 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000011656 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011656 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000011656 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000011656 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011656 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000011656 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000011656 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000263898 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000263898 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000263898 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000263898 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000263898 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000263898 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000263898 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000263898 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000011659 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000011659 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011659 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000011659 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000011659 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011659 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000011659 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000011659 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000011657 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000011657 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011657 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000011657 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000011657 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011657 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000011657 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000011657 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000011658 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000011658 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011658 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000011658 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000011658 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011658 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000011658 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000011658 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000167931 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 6.10%
C000167931 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000167931 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 55.40%
C000167931 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000167931 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000167931 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000167931 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.20%
C000167931 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 20.80%
C000011660 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 9.70%
C000011660 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000011660 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 47.70%
C000011660 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000011660 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000011660 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 74.70%
C000011660 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000011661 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 9.70%
C000011661 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000011661 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 47.70%
C000011661 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000011661 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000011661 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 74.70%
C000011661 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000017908 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 9.70%
C000017908 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000017908 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 47.70%
C000017908 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000017908 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000017908 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 74.70%
C000017908 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000011662 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 9.70%
C000011662 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000011662 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 47.70%
C000011662 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000011662 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000011662 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 74.70%
C000011662 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000011665 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 9.70%
C000011665 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000011665 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 47.70%
C000011665 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000011665 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000011665 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 74.70%
C000011665 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000011663 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 9.70%
C000011663 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000011663 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 47.70%
C000011663 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000011663 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000011663 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 74.70%
C000011663 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000011664 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 9.70%
C000011664 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000011664 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 47.70%
C000011664 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000011664 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000011664 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 74.70%
C000011664 | U.S. Agency Securities  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000248992 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000248992 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000248992 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000248992 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000248992 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000248992 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000248992 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000248992 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000248992 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000248992 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000011667 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000011667 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000011667 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000011667 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000011667 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000011667 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000011667 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000011667 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000011667 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000011667 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000017909 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000017909 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000017909 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000017909 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000017909 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000017909 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000017909 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000017909 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000017909 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000017909 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000248681 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000248681 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000248681 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000248681 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000248681 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000248681 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000248681 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000248681 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000248681 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000248681 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000011670 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000011670 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000011670 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000011670 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000011670 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000011670 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000011670 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000011670 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000011670 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000011670 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000240958 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000240958 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000240958 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000240958 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000240958 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000240958 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000240958 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000240958 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000240958 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000240958 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000011668 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000011668 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000011668 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000011668 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000011668 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000011668 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000011668 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000011668 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000011668 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000011668 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000011671 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000011671 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000011671 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.90%
C000011671 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 23.70%
C000011671 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000011671 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 58.20%
C000011671 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000011671 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000011671 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 13.20%
C000011671 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 16.90%
C000011673 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000011673 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000011673 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.50%
C000011673 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 27.50%
C000011673 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000011673 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.90%
C000011673 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000011673 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000011673 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 15.80%
C000011673 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 19.80%
C000017910 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000017910 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000017910 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.50%
C000017910 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 27.50%
C000017910 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000017910 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.90%
C000017910 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000017910 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000017910 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 15.80%
C000017910 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 19.80%
C000238341 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000238341 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000238341 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.50%
C000238341 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 27.50%
C000238341 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000238341 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.90%
C000238341 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000238341 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000238341 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 15.80%
C000238341 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 19.80%
C000234746 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000234746 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000234746 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.50%
C000234746 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 27.50%
C000234746 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000234746 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.90%
C000234746 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000234746 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000234746 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 15.80%
C000234746 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 19.80%
C000248674 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000248674 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000248674 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.50%
C000248674 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 27.50%
C000248674 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000248674 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.90%
C000248674 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000248674 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000248674 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 15.80%
C000248674 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 19.80%
C000011674 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000011674 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000011674 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.50%
C000011674 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 27.50%
C000011674 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000011674 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.90%
C000011674 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000011674 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000011674 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 15.80%
C000011674 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 19.80%
C000011677 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000011677 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000011677 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 56.50%
C000011677 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 27.50%
C000011677 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000011677 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 55.90%
C000011677 | Certificates of Deposit  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000011677 | Corporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000011677 | Floating Rate Notes  
Holdings [Line Items]  
Percent of Total Investments 15.80%
C000011677 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 19.80%
C000248993 | Other States  
Holdings [Line Items]  
Percent of Total Investments 32.90%
C000248993 | Colorado  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000248993 | South Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248993 | North Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248993 | Utah  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000248993 | Ohio  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000248993 | Florida  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000248993 | Indiana  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000248993 | Massachusetts  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000248993 | Texas  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000248993 | New York  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000248993 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000248993 | Quarterly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000248993 | Semi-Annual Variable Rate Bond  
Holdings [Line Items]  
Percent of Total Investments 1.10%
C000248993 | Closed-End Investment Companies  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000248993 | Municipal Bonds & Notes  
Holdings [Line Items]  
Percent of Total Investments 8.30%
C000248993 | Daily Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 22.30%
C000248993 | Weekly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 52.40%
C000017911 | Other States  
Holdings [Line Items]  
Percent of Total Investments 32.90%
C000017911 | Colorado  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000017911 | South Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000017911 | North Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000017911 | Utah  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000017911 | Ohio  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000017911 | Florida  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000017911 | Indiana  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000017911 | Massachusetts  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000017911 | Texas  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000017911 | New York  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000017911 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000017911 | Quarterly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000017911 | Semi-Annual Variable Rate Bond  
Holdings [Line Items]  
Percent of Total Investments 1.10%
C000017911 | Closed-End Investment Companies  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000017911 | Municipal Bonds & Notes  
Holdings [Line Items]  
Percent of Total Investments 8.30%
C000017911 | Daily Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 22.30%
C000017911 | Weekly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 52.40%
C000248683 | Other States  
Holdings [Line Items]  
Percent of Total Investments 32.90%
C000248683 | Colorado  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000248683 | South Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248683 | North Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248683 | Utah  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000248683 | Ohio  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000248683 | Florida  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000248683 | Indiana  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000248683 | Massachusetts  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000248683 | Texas  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000248683 | New York  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000248683 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000248683 | Quarterly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000248683 | Semi-Annual Variable Rate Bond  
Holdings [Line Items]  
Percent of Total Investments 1.10%
C000248683 | Closed-End Investment Companies  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000248683 | Municipal Bonds & Notes  
Holdings [Line Items]  
Percent of Total Investments 8.30%
C000248683 | Daily Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 22.30%
C000248683 | Weekly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 52.40%
C000248682 | Other States  
Holdings [Line Items]  
Percent of Total Investments 32.90%
C000248682 | Colorado  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000248682 | South Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248682 | North Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248682 | Utah  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000248682 | Ohio  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000248682 | Florida  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000248682 | Indiana  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000248682 | Massachusetts  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000248682 | Texas  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000248682 | New York  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000248682 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000248682 | Quarterly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000248682 | Semi-Annual Variable Rate Bond  
Holdings [Line Items]  
Percent of Total Investments 1.10%
C000248682 | Closed-End Investment Companies  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000248682 | Municipal Bonds & Notes  
Holdings [Line Items]  
Percent of Total Investments 8.30%
C000248682 | Daily Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 22.30%
C000248682 | Weekly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 52.40%
C000248684 | Other States  
Holdings [Line Items]  
Percent of Total Investments 32.90%
C000248684 | Colorado  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000248684 | South Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248684 | North Carolina  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248684 | Utah  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000248684 | Ohio  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000248684 | Florida  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000248684 | Indiana  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000248684 | Massachusetts  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000248684 | Texas  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000248684 | New York  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000248684 | Commercial Paper  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000248684 | Quarterly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000248684 | Semi-Annual Variable Rate Bond  
Holdings [Line Items]  
Percent of Total Investments 1.10%
C000248684 | Closed-End Investment Companies  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000248684 | Municipal Bonds & Notes  
Holdings [Line Items]  
Percent of Total Investments 8.30%
C000248684 | Daily Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 22.30%
C000248684 | Weekly Variable Rate Bonds  
Holdings [Line Items]  
Percent of Total Investments 52.40%
C000011684 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000011684 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000011684 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000011684 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000011684 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000011684 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000011684 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000248994 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000248994 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000248994 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000248994 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000248994 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000248994 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000248994 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000011685 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000011685 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000011685 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000011685 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000011685 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000011685 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000011685 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000017912 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000017912 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000017912 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000017912 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000017912 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000017912 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000017912 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000011686 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000011686 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000011686 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000011686 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000011686 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000011686 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000011686 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000263899 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000263899 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000263899 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000263899 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000263899 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000263899 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000263899 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000011689 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000011689 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000011689 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000011689 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000011689 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000011689 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000011689 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000011687 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000011687 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000011687 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000011687 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000011687 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000011687 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000011687 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000011688 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000011688 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000011688 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000011688 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000011688 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000011688 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000011688 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000167932 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000167932 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000167932 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 64.80%
C000167932 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 29.00%
C000167932 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000167932 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 35.80%
C000167932 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Total Investments 64.20%
C000011690 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011690 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000011690 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000011690 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000011690 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011690 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000251131 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000251131 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000251131 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000251131 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000251131 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000251131 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000011691 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011691 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000011691 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000011691 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000011691 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011691 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000017913 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000017913 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000017913 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000017913 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000017913 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000017913 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000271635 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000271635 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000271635 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000271635 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000271635 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000271635 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000248675 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248675 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000248675 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000248675 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000248675 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248675 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000248676 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000248676 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000248676 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000248676 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000248676 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000248676 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000011692 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011692 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000011692 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000011692 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000011692 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011692 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000263900 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000263900 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000263900 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000263900 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000263900 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000263900 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000011695 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011695 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000011695 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000011695 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000011695 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011695 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000011693 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011693 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000011693 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000011693 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000011693 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011693 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000011694 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000011694 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000011694 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000011694 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000011694 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000011694 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%
C000167933 | 91-120 Days  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000167933 | 31-60 Days  
Holdings [Line Items]  
Percent of Total Investments 27.00%
C000167933 | 1-30 Days  
Holdings [Line Items]  
Percent of Total Investments 42.20%
C000167933 | 121+ Days  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000167933 | 61-90 Days  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000167933 | U.S. Treasury Securities  
Holdings [Line Items]  
Percent of Total Investments 100.00%