3.25.3 html 15195 45 1 false 210 0 false 6 false false R1.htm 030000 - Disclosure - Form N-CSR Cover Sheet http://xbrl.sec.gov/oef/role/NcsrCover Form N-CSR Cover Cover 1 false false R2.htm 030001 - Disclosure - Shareholder Report Sheet http://xbrl.sec.gov/oef/role/ShareholderReport Shareholder Report Notes 2 false false R3.htm 040010 - Disclosure - Shareholder Report, Line Graph (Details) Sheet http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails Shareholder Report, Line Graph (Details) Details 3 false false R4.htm 040015 - Disclosure - Shareholder Report, Average Annual Return (Details) Sheet http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails Shareholder Report, Average Annual Return (Details) Details 4 false false R5.htm 040020 - Disclosure - Shareholder Report, Holdings (Details) Sheet http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails Shareholder Report, Holdings (Details) Details 5 false false All Reports Book All Reports primary-document.htm principal-20250831.xsd i008092bb6d99f5b90cb9f7cf.jpg i0a85ffa3aacf665ece6c877a.jpg i0e0a30e3502769667a120390.jpg i0e16cf40d306a420adb1af22.jpg i0f361a11a2c0b88c423e4766.jpg i12da206406f76e87a65473b1.jpg i16f5bf336a0f472b154c04a0.jpg i17aac8811e2fe964e577e3fc.jpg i1a463d5cba0564e34d9be9fd.jpg i22aa228bb932136f5fc60d4b.jpg i2ca83c98f52547a69ea3cb4e.jpg i314a77b772b458c066bfd3f9.jpg i365bd7745bdff7fdcccbf184.jpg i51e97492a70dfd8bd9c68058.jpg i58481ce5c0b6d3bc87e63aa0.jpg i58e8c5a4bdda6aad71fe9c13.jpg i6f1b939f9f2928d48f56b080.jpg i72d85f4dec27a97be479466d.jpg i80aa088b08fcd033d21a959a.jpg i819202201253a2dd5b0c7576.jpg i8b07d9dbcdf1b10ce175eaa4.jpg i8bf6ba28452877803f683272.jpg i8cedc85ad6874ea5b4a2a044.jpg i9873e50db11da31681c79d4b.jpg i9b9abcc231ca3cabc1cd158e.jpg ia7d49b6511a2e691852a6a12.jpg ia9439d7d876221400a3ca50e.jpg ib067e91c4303d7f9f92ed000.jpg ib0b13ccdc112d40cf7c39a7b.jpg iba2302816c112a61fe4474d4.jpg iba284ba2eac92ba705ff1790.jpg ibf0f0b8054197529eff3ba10.jpg ic28530eb934ecb4227fc79c8.jpg ic3d08cd3da3ae5b39a263106.jpg ic4260815bb6cb8ce980166bb.jpg ic492f610b062e6032b887517.jpg ic53f5aa5f9497ebf322a1267.jpg ie068eb1d7dfe0071d221931d.jpg iea3c4c528b8c6f0f31ce5cc5.jpg if102320ebe0a87656d3d180c.jpg if2321b32382415ea5226b0a7.jpg if28220d1bdc8d6ca29f88973.jpg ifece87b44b11c71c10cdc171.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/oef/2025 false false