v3.26.1
Shareholder Report, Holdings (Details)
May 31, 2026
C000273514 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 47.40%
C000273514 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 42.00%
C000273514 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
C000240872 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000240872 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 18.70%
C000161175 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000161175 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 18.70%
C000161180 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000161180 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 18.70%
C000161177 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000161177 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 18.70%
C000161178 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000161178 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 18.70%
C000161176 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000161176 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 18.70%
C000161786 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000161786 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 18.70%
C000166882 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000166882 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000166882 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000166883 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000166883 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000166883 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000237844 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000237844 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000237844 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025196 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000025196 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000025196 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025201 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000025201 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000025201 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025198 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000025198 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000025198 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025199 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000025199 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000025199 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025200 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000025200 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000025200 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025197 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000025197 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000025197 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000088802 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000088802 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000088802 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000088803 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000088803 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000088803 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000088804 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000088804 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000088804 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000167141 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000167141 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000167141 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000214495 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000214495 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000214495 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000229775 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000229775 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000229775 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000229774 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 58.60%
C000229774 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000229774 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000240871 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000025309 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000025314 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000025311 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000025312 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000025313 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000025310 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000088822 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000088823 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000229777 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000229776 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000260398 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 114.40%
C000025302 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000025302 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000025307 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000025307 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000025304 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000025304 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000025305 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000025305 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000025306 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000025306 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000025303 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000025303 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000088821 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000088821 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000088819 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000088819 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000088820 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 55.10%
C000088820 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 46.40%
C000025203 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000025208 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000025205 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000025206 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000025207 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000025204 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000088805 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000088806 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 110.20%
C000166000 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
C000166000 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000166000 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000166000 | Commercial Paper and Corporate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000166000 | Certificate of Deposit  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000166000 | Time Deposits  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
C000166000 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000166000 | Variable Rate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000166000 | Medium Term Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000166000 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
C000166001 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
C000166001 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000166001 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000166001 | Commercial Paper and Corporate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000166001 | Certificate of Deposit  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000166001 | Time Deposits  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
C000166001 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000166001 | Variable Rate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000166001 | Medium Term Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000166001 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [2]
C000240873 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
C000240873 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000240873 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000240873 | Commercial Paper and Corporate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000240873 | Certificate of Deposit  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000240873 | Time Deposits  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
C000240873 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000240873 | Variable Rate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000240873 | Medium Term Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000240873 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [3]
C000161182 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
C000161182 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000161182 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000161182 | Commercial Paper and Corporate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000161182 | Certificate of Deposit  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000161182 | Time Deposits  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
C000161182 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000161182 | Variable Rate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000161182 | Medium Term Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000161182 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [4]
C000172503 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
C000172503 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000172503 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000172503 | Commercial Paper and Corporate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000172503 | Certificate of Deposit  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000172503 | Time Deposits  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
C000172503 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000172503 | Variable Rate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000172503 | Medium Term Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000172503 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [5]
C000166002 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
C000166002 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000166002 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000166002 | Commercial Paper and Corporate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000166002 | Certificate of Deposit  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000166002 | Time Deposits  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
C000166002 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000166002 | Variable Rate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000166002 | Medium Term Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000166002 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [6]
C000172501 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
C000172501 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000172501 | U.S. Government Agency Securities  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000172501 | Commercial Paper and Corporate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000172501 | Certificate of Deposit  
Holdings [Line Items]  
Percent of Net Asset Value 12.90%
C000172501 | Time Deposits  
Holdings [Line Items]  
Percent of Net Asset Value 11.70%
C000172501 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000172501 | Variable Rate Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000172501 | Medium Term Notes  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000172501 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [7]
C000251956 | Variable Rate Demand Note - BNY-91412GSH9  
Holdings [Line Items]  
Percent of Net Asset Value 58.70%
C000251956 | Non-Financial Company Commercial Paper - BNY-13080MEV5  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
C000251956 | U.S. Treasury Obligations - BNY-912797TU1  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000251956 | Other Municipal Security - BNY-544657JC4  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000251956 | Tender Option Bond - BNY-88035RK52  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000251956 | Other Municipal Security - BNY-544647MQ0  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000251959 | Variable Rate Demand Note - BNY-91412GSH9  
Holdings [Line Items]  
Percent of Net Asset Value 58.70%
C000251959 | Non-Financial Company Commercial Paper - BNY-13080MEV5  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
C000251959 | U.S. Treasury Obligations - BNY-912797TU1  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000251959 | Other Municipal Security - BNY-544657JC4  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000251959 | Tender Option Bond - BNY-88035RK52  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000251959 | Other Municipal Security - BNY-544647MQ0  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000251958 | Variable Rate Demand Note - BNY-91412GSH9  
Holdings [Line Items]  
Percent of Net Asset Value 58.70%
C000251958 | Non-Financial Company Commercial Paper - BNY-13080MEV5  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
C000251958 | U.S. Treasury Obligations - BNY-912797TU1  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000251958 | Other Municipal Security - BNY-544657JC4  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000251958 | Tender Option Bond - BNY-88035RK52  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000251958 | Other Municipal Security - BNY-544647MQ0  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000251957 | Variable Rate Demand Note - BNY-91412GSH9  
Holdings [Line Items]  
Percent of Net Asset Value 58.70%
C000251957 | Non-Financial Company Commercial Paper - BNY-13080MEV5  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
C000251957 | U.S. Treasury Obligations - BNY-912797TU1  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000251957 | Other Municipal Security - BNY-544657JC4  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000251957 | Tender Option Bond - BNY-88035RK52  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000251957 | Other Municipal Security - BNY-544647MQ0  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000251955 | Variable Rate Demand Note - BNY-91412GSH9  
Holdings [Line Items]  
Percent of Net Asset Value 58.70%
C000251955 | Non-Financial Company Commercial Paper - BNY-13080MEV5  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
C000251955 | U.S. Treasury Obligations - BNY-912797TU1  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000251955 | Other Municipal Security - BNY-544657JC4  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000251955 | Tender Option Bond - BNY-88035RK52  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000251955 | Other Municipal Security - BNY-544647MQ0  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000166884 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000166884 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
C000166884 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000166884 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000166884 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000166885 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000166885 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
C000166885 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000166885 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000166885 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000025210 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000025210 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
C000025210 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025210 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000025210 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000025212 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000025212 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
C000025212 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025212 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000025212 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000025213 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000025213 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
C000025213 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025213 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000025213 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000025211 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
C000025211 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 57.10%
C000025211 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 19.30%
C000025211 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000025211 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000251961 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000251961 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 61.60%
C000251961 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
C000251961 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000251961 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000251964 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000251964 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 61.60%
C000251964 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
C000251964 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000251964 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000251963 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000251963 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 61.60%
C000251963 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
C000251963 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000251963 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000251962 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000251962 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 61.60%
C000251962 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
C000251962 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000251962 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000251960 | U.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000251960 | Variable Rate Demand Note  
Holdings [Line Items]  
Percent of Net Asset Value 61.60%
C000251960 | Non-Financial Company Commercial Paper  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
C000251960 | Other Municipal Security  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000251960 | Tender Option Bond  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000264902 | Repurchase Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
[1] Represents less than 0.05%
[2] Represents less than 0.05%
[3] Represents less than 0.05%
[4] Represents less than 0.05%
[5] Represents less than 0.05%
[6] Represents less than 0.05%
[7] Represents less than 0.05%