3.26.1 html 41 25 1 true 14 0 false 3 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 040020 - Disclosure - Shareholder Report, Holdings (Details) Sheet http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails Shareholder Report, Holdings (Details) Details 3 false false All Reports Book All Reports 8df08713bc6d0dd.htm cik0000892538-20260825.xsd chartimages_1142864.jpg chartimages_1142886.jpg chartimages_1142901.jpg chartimages_1142933.jpg chartimages_1142945.jpg chartimages_1142985.jpg chartimages_1142992.jpg chartimages_1143025.jpg chartimages_1143046.jpg chartimages_1143076.jpg g06sxisoxb8r1qz6k4p10.jpg g0e7udp6im24whogowbrx.jpg g0f10vumo8ssfbvfoaj75.jpg g0o0imedwwy7t6pz5gsqh.jpg g0v62vjsbp88feo83tg9k.jpg g0vyjirabcpmip5ht6kkg.jpg g14qxtj69mp37b5dn2afo.jpg g1pwy6k4y9964rkdq6ctm.jpg g1zyvufkls3895dexu105.jpg g2biq9ynro88p9ozh6ufz.jpg g2ra6y2oobpcwxhj859vx.jpg g3amw4uka0phfphwtgcpo.jpg g3h75x023edvz2uioqvic.jpg g4ogzkg49rh71nnudgzj2.jpg g4yyqb0p3b711s7xob1lq.jpg g52az105fa8dzkqs69bzn.jpg g5vydw9xfdgybxlcxjy4t.jpg g6li2kh2dsb2s1awcy7ex.jpg g6ptw42x0ej5vix3kl8ja.jpg g6rjtbxpal3yz34dp7ihg.jpg g7vz0k36mwyif475o4odj.jpg g7y3d2780i06ptd5oo4ne.jpg g8nnnu41wjv97iybkxgxx.jpg g97srds5ljfzo5w9a819x.jpg ga12k2981htx70m8mb18z.jpg gaclj04wpv4txrlygiaz8.jpg gao279qfam4ng2lkxwsyw.jpg gauu79ewgd2zrtj4nglzv.jpg gb2qu35rdc0h5fhv69fzw.jpg gb9ipx3ehpwd3ba1ib946.jpg gbnkpba26txx8stcoaeje.jpg gbqjc6859qlfj6rns83q3.jpg gchuhzmzwfyssbaq4tdam.jpg gczom7eyc3nr6ahjsf2x0.jpg gd6ujiotv7yj8agpyiyv0.jpg gda4rj45rwmpzxdemzppt.jpg gf2ps5vnxbc4ah3asjrlu.jpg gfi0sa09k6q2og524g9oc.jpg gfrtfu5nmyjkh9z663urr.jpg gfy3jg5oe77nllw2gm4fd.jpg gg2rv0msizf16hlzut777.jpg ggp07muew14fwjly1ujg6.jpg ghbaztggf268riv5ouovh.jpg ghc55dvkieej4zlqtg0yy.jpg gi1od67rvcgf6495xx5za.jpg gi9e489w7yyxxhswcrg41.jpg gidzjjxyu31mhunhb716b.jpg gj8yiuet7k2nj2piunr7d.jpg gjbpnpslyebvg4vi7ikvd.jpg gjibxtfpr770qq2ldjho3.jpg gjkmojosaisk8x752pdv8.jpg gjwy1f4jrvrjqcqjy5ze5.jpg gjx2fpcxwcqf1b1ey50aw.jpg gjymm6jim0x03xdhkx370.jpg gjyzsm1ngnqwd6tc5oi1c.jpg gk6j0p49bxrot2vv4xmud.jpg gksvxu650zegg3l63q3b5.jpg gkyf1t55322olpw3d72cd.jpg gkyzrj9lzbm44y9m3ccoa.jpg gm51ayzggwht6ec7r81n5.jpg gm6zp8qbmlqz44id9sjv8.jpg gmfkdsndmzasemht5yhb0.jpg gmm82tzwzzbofgdgaxvcs.jpg gmr2fwjd7t7pvo0zx2aqi.jpg gnqtgc3ep0q78azd0ptvi.jpg gp45jxd9vqklv0djym61l.jpg gpkpbvy61t8420251quvw.jpg gqf9pj7kcn11i662c2iw1.jpg gqygnf6in00x4tgvfz1ep.jpg gr45m4b7l8akv3is5e7aa.jpg gs8go8rgcl4ax5oablpwy.jpg gshhihoxm67faizea1qqr.jpg gtt3g92phdqavdjw62bji.jpg gukg7wpq470awlc5msw7p.jpg gulh7y2d97br6ngur41wp.jpg gurdf3wsispv3tni9z0ff.jpg gvkeldnblfz9we207ih3f.jpg gvmg89faln8el6vfvibj2.jpg gwoajdsxx871nah2q31yf.jpg gwvwr2ks6rq4cbfa8qsk2.jpg gwxlu25crwuzrt0kkyv3w.jpg gx5u0t5s6weg1tgmpe380.jpg gx8vatn2gn64ie2regpuj.jpg gxkzdsytfk2wx8gu6p81j.jpg gxt2hncayo14h9rbdn806.jpg gye1qubaks6wuhijuobav.jpg gyjadtw4nrd7lex3mc5oe.jpg gzodao0mbf34ecddi0idk.jpg gzp8c5gxl6ggp4byy0u1e.jpg gzr38jzkwkxorg5tr4f4g.jpg images_467.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/oef/2025 false false