v3.26.3
Shareholder Report, Line Graph (Details) - USD ($)
 4 Months Ended 12 Months Ended
Apr. 10, 2017
Jul. 31, 2016
Jul. 31, 2017
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2024
Jul. 31, 2023
Jul. 31, 2022
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2017
C000016333 [Member]                          
Account Value [Line Items]                          
Accumulated Value   $ 10,000   $ 17,938 $ 16,533 $ 15,330 $ 14,016 $ 13,603 $ 14,849 $ 12,575 $ 11,655 $ 11,148 $ 10,588
C000016335 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   18,296 16,860 15,575 14,212 13,766 15,020 12,674 11,723 11,211 10,627
C000016334 [Member]                          
Account Value [Line Items]                          
Accumulated Value   9,425   16,496 15,266 14,166 12,982 12,632 13,847 11,755 10,923 10,474 9,972
C000016338 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   16,229 15,131 14,172 13,078 12,814 14,140 12,095 11,328 10,952 10,503
C000016332 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   17,057 15,841 14,758 13,556 13,197 14,508 12,337 11,490 11,063 10,555
C000189656 [Member]                          
Account Value [Line Items]                          
Accumulated Value $ 10,000   $ 10,342 17,792 16,397 15,176 13,850 13,416 14,636 12,353 11,428 10,910  
C000131621 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   18,571 17,090 15,763 14,362 13,890 15,133 12,773 11,796 11,245 10,643
C000016325 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   21,790 19,525 17,717 15,918 15,033 16,697 13,391 12,351 11,835 10,971
C000016327 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   22,281 19,928 18,048 16,186 15,230 16,885 13,515 12,440 11,899 11,010
C000016326 [Member]                          
Account Value [Line Items]                          
Accumulated Value   9,425   20,060 18,008 16,374 14,766 13,953 15,548 12,490 11,561 11,104 10,317
C000016330 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   19,775 17,893 16,394 14,891 14,166 15,899 12,868 12,007 11,623 10,876
C000016331 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   20,757 18,682 17,029 15,404 14,581 16,303 13,123 12,177 11,722 10,927
C000189655 [Member]                          
Account Value [Line Items]                          
Accumulated Value 10,000   10,467 21,143 18,939 17,129 15,362 14,456 16,048 12,829 11,828 11,312  
C000131620 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   22,588 20,168 18,232 16,349 15,358 17,001 13,582 12,481 11,919 11,011
C000016319 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   25,702 22,449 19,997 17,708 16,343 18,237 14,024 12,888 12,397 11,269
C000016321 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   26,231 22,853 20,312 17,950 16,542 18,438 14,137 12,974 12,449 11,298
C000016320 [Member]                          
Account Value [Line Items]                          
Accumulated Value   9,425   23,612 20,667 18,461 16,391 15,160 16,965 13,082 12,048 11,622 10,586
C000016324 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   23,246 20,505 18,440 16,504 15,382 17,341 13,468 12,494 12,140 11,162
C000016318 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   24,452 21,452 19,207 17,091 15,868 17,806 13,742 12,705 12,274 11,220
C000189654 [Member]                          
Account Value [Line Items]                          
Accumulated Value 10,000   10,571 24,547 21,387 19,012 16,804 15,464 17,237 13,234 12,129 11,654  
C000131619 [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   26,632 23,150 20,559 18,157 16,701 18,567 14,220 13,025 12,492 11,318
MSCI ACWI IMI [Member]                          
Account Value [Line Items]                          
Accumulated Value   10,000   31,119 25,451 22,119 19,005 16,887 18,976 14,092 13,281 13,014 11,706
Bloomberg U.S. Aggregate [Member]                          
Account Value [Line Items]                          
Accumulated Value   $ 10,000   11,431 11,130 10,766 10,243 10,600 11,664 11,746 10,666 9,869 $ 9,949
MSCI ACWI IMI (Inception Date 4/10/17) [Member]                          
Account Value [Line Items]                          
Accumulated Value 10,000   10,742 28,557 23,355 20,297 17,440 15,496 17,413 12,932 12,187 11,943  
Bloomberg U.S. Aggregate (Inception Date 4/10/17) [Member]                          
Account Value [Line Items]                          
Accumulated Value $ 10,000   $ 10,164 $ 11,678 $ 11,370 $ 10,998 $ 10,465 $ 10,829 $ 11,916 $ 12,000 $ 10,897 $ 10,082