| Form N-CSR Cover | 12 Months Ended |
| Aug. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | iShares Inc |
| Entity Central Index Key | 0000930667 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Aug. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Aug. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | iShares Inc |
| Entity Central Index Key | 0000930667 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Aug. 31, 2024 |
| C000087836 | |
| Shareholder Report [Line Items] | |
| Fund Name | iShares MSCI USA Equal Weighted ETF |
| Trading Symbol | EUSA |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about iShares MSCI USA Equal Weighted ETF (the “Fund”) for the period of September 1, 2023 to August 31, 2024 |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports |
| Additional Information Phone Number | 1-800-474-2737 |
| Additional Information Website | <span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; grid-area: auto; line-height: 12.8px; margin: 0px; overflow: visible; text-align: justify;">blackrock.com/fundreports</span></span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 12.8px; margin: 0px; overflow: visible; text-align: justify;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; grid-area: auto; line-height: 12.8px; margin: 0px; overflow: visible; text-align: justify;">blackrock.com/fundreports</span></span> |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment iShares MSCI USA Equal Weighted ETF $10 0.09% |
| Expenses Paid, Amount | $ 10 |
| Expense Ratio, Percent | 0.09% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year? U.S. stocks registered solid gains during the reporting period, as investor confidence increased over hopes of interest rate cuts and robust corporate earnings. The United States experienced stronger-than-expected economic growth driven by robust consumer spending and business investment. Meanwhile, inflation measures continued to trend downward, prompting comments by U.S. Federal Reserve Bank officials that indicated interest rate cuts would be forthcoming. Powered by artificial intelligence (“AI”), information technology stocks led the market for the majority of the reporting period. However, market sentiment pivoted toward more defensive sectors late in the reporting period amid growing uncertainty surrounding economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? For the reporting period, the largest contributor to the Fund’s performance was the financials sector, driven by financial services companies. The outperformance was due to significant merger and acquisition activity; banks consolidated to manage rising costs and regulatory pressures, while digital transformation spurred acquisitions in financial technology. Additionally, growing expectations of an interest rate cut by the U.S. Federal Reserve Bank fueled investor confidence and drove growth within the broader financial sector. Industrials stocks helped performance due to unexpectedly strong economic data, including higher durable goods orders and manufacturing growth. Enhanced infrastructure spending and reduced supply chain issues fueled sector growth. The information technology sector benefited, especially software and services, which saw solid performance fueled by continued investments in AI, cybersecurity, and cloud technology. What detracted from performance? There were no meaningful detractors to the Fund’s performance during the reporting period. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results. |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. |
| Line Graph [Table Text Block] | Fund MSCI USA Index MSCI USA Equal Weighted Index Aug 14 $10,000 $10,000 $10,000 Sep 14 $9,843 $9,844 $9,844 Oct 14 $10,081 $10,081 $10,081 Nov 14 $10,347 $10,349 $10,349 Dec 14 $10,315 $10,317 $10,317 Jan 15 $10,023 $10,026 $10,026 Feb 15 $10,606 $10,612 $10,612 Mar 15 $10,453 $10,459 $10,459 Apr 15 $10,545 $10,555 $10,555 May 15 $10,686 $10,696 $10,696 Jun 15 $10,483 $10,493 $10,493 Jul 15 $10,691 $10,703 $10,703 Aug 15 $10,048 $10,053 $10,053 Sep 15 $9,659 $9,787 $9,666 Oct 15 $10,341 $10,595 $10,350 Nov 15 $10,372 $10,632 $10,383 Dec 15 $10,091 $10,453 $10,102 Jan 16 $9,442 $9,897 $9,450 Feb 16 $9,523 $9,877 $9,533 Mar 16 $10,290 $10,553 $10,304 Apr 16 $10,451 $10,605 $10,465 May 16 $10,612 $10,799 $10,627 Jun 16 $10,606 $10,827 $10,624 Jul 16 $11,086 $11,238 $11,106 Aug 16 $11,108 $11,255 $11,129 Sep 16 $11,131 $11,267 $11,152 Oct 16 $10,847 $11,054 $10,870 Nov 16 $11,402 $11,453 $11,429 Dec 16 $11,511 $11,666 $11,541 Jan 17 $11,793 $11,908 $11,825 Feb 17 $12,171 $12,376 $12,206 Mar 17 $12,154 $12,394 $12,190 Apr 17 $12,256 $12,528 $12,295 May 17 $12,339 $12,699 $12,380 Jun 17 $12,491 $12,778 $12,532 Jul 17 $12,675 $13,039 $12,719 Aug 17 $12,577 $13,081 $12,621 Sep 17 $12,917 $13,348 $12,964 Oct 17 $13,067 $13,654 $13,117 Nov 17 $13,557 $14,069 $13,608 Dec 17 $13,709 $14,222 $13,764 Jan 18 $14,328 $15,038 $14,387 Feb 18 $13,729 $14,486 $13,787 Mar 18 $13,646 $14,133 $13,704 Apr 18 $13,666 $14,190 $13,727 May 18 $13,889 $14,536 $13,953 Jun 18 $14,029 $14,634 $14,094 Jul 18 $14,442 $15,160 $14,513 Aug 18 $14,784 $15,662 $14,857 Sep 18 $14,765 $15,733 $14,839 Oct 18 $13,623 $14,641 $13,693 Nov 18 $13,974 $14,926 $14,048 Dec 18 $12,591 $13,582 $12,655 Jan 19 $13,862 $14,699 $13,935 Feb 19 $14,406 $15,191 $14,485 Mar 19 $14,495 $15,471 $14,577 Apr 19 $15,041 $16,092 $15,128 May 19 $14,018 $15,074 $14,100 Jun 19 $15,066 $16,133 $15,159 Jul 19 $15,228 $16,382 $15,325 Aug 19 $14,749 $16,098 $14,844 Sep 19 $15,176 $16,384 $15,276 Oct 19 $15,374 $16,741 $15,477 Nov 19 $15,955 $17,370 $16,065 Dec 19 $16,348 $17,879 $16,462 Jan 20 $16,158 $17,914 $16,273 Feb 20 $14,756 $16,453 $14,862 Mar 20 $12,021 $14,367 $12,108 Apr 20 $13,689 $16,256 $13,785 May 20 $14,552 $17,102 $14,657 Jun 20 $14,783 $17,492 $14,889 Jul 20 $15,547 $18,530 $15,659 Aug 20 $16,251 $19,922 $16,370 Sep 20 $15,891 $19,179 $16,012 Oct 20 $15,811 $18,680 $15,932 Nov 20 $18,043 $20,841 $18,186 Dec 20 $18,825 $21,700 $18,977 Jan 21 $18,645 $21,499 $18,796 Feb 21 $19,615 $22,060 $19,777 Mar 21 $20,461 $22,890 $20,634 Apr 21 $21,486 $24,136 $21,672 May 21 $21,794 $24,252 $21,987 Jun 21 $22,156 $24,927 $22,356 Jul 21 $22,447 $25,517 $22,652 Aug 21 $22,971 $26,270 $23,184 Sep 21 $22,009 $25,029 $22,213 Oct 21 $23,272 $26,775 $23,490 Nov 21 $22,580 $26,506 $22,793 Dec 21 $23,630 $27,553 $23,854 Jan 22 $22,238 $25,993 $22,451 Feb 22 $21,970 $25,232 $22,182 Mar 22 $22,459 $26,119 $22,677 Apr 22 $20,672 $23,751 $20,873 May 22 $20,685 $23,699 $20,886 Jun 22 $18,763 $21,737 $18,947 Jul 22 $20,432 $23,765 $20,632 Aug 22 $19,772 $22,834 $19,965 Sep 22 $17,874 $20,716 $18,048 Oct 22 $19,460 $22,361 $19,652 Nov 22 $20,681 $23,577 $20,886 Dec 22 $19,605 $22,191 $19,800 Jan 23 $21,205 $23,664 $21,418 Feb 23 $20,503 $23,086 $20,708 Mar 23 $20,389 $23,906 $20,595 Apr 23 $20,293 $24,210 $20,499 May 23 $19,805 $24,367 $20,005 Jun 23 $21,318 $25,992 $21,535 Jul 23 $22,210 $26,887 $22,439 Aug 23 $21,490 $26,434 $21,714 Sep 23 $20,452 $25,194 $20,667 Oct 23 $19,551 $24,614 $19,758 Nov 23 $21,467 $26,935 $21,684 Dec 23 $23,056 $28,204 $23,291 Jan 24 $22,864 $28,644 $23,097 Feb 24 $23,910 $30,181 $24,153 Mar 24 $24,949 $31,141 $25,207 Apr 24 $23,675 $29,855 $23,921 May 24 $24,289 $31,281 $24,545 Jun 24 $24,272 $32,400 $24,531 Jul 24 $25,263 $32,807 $25,533 Aug 24 $25,880 $33,598 $26,158 |
| Average Annual Return [Table Text Block] | Average annual total returns ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 1 Year 5 Years 10 Years Fund NAV ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 20.43 % 11.90 % 9.98 % Fund Market ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 20.39 11.92 9.98 MSCI USA Index ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 27.10 15.85 12.88 MSCI USA Equal Weighted Index ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 20.47 12.00 10.09 |
| No Deduction of Taxes [Text Block] | Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. |
| AssetsNet | $ 809,091,984 |
| Holdings Count | Holding | 596 |
| Advisory Fees Paid, Amount | $ 597,103 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ $809,091,984 Number of Portfolio Holdings ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 596 Net Investment Advisory Fees ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ $597,103 Portfolio Turnover Rate ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 26% |
| Holdings [Text Block] | Sector allocation Sector Percent of Total Investments Footnote Reference Industrials ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 16.1 % Financials ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 15.2 Information Technology ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 15.2 Health Care ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 12.1 Consumer Discretionary ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9.0 Consumer Staples ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 6.6 Real Estate ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 6.2 Materials ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 5.5 Utilities ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 5.2 Energy ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4.7 Communication Services ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4.2 |
| Largest Holdings [Text Block] | Ten largest holdings Security Percent of Total Investments Footnote Reference Best Buy Co., Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 % Prudential Financial, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 MetLife, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 Zoom Video Communications, Inc., Class A ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 Aflac, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 Hartford Financial Services Group, Inc. (The) ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 MongoDB, Inc., Class A ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 Visa, Inc., Class A ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 Mastercard, Inc., Class A ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 Fiserv, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.2 |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Aug. 31, 2024 | Aug. 31, 2014 | Jul. 31, 2024 | Jun. 30, 2024 | May 31, 2024 | Apr. 30, 2024 | Mar. 31, 2024 | Feb. 29, 2024 | Jan. 31, 2024 | Dec. 31, 2023 | Nov. 30, 2023 | Oct. 31, 2023 | Sep. 30, 2023 | Aug. 31, 2023 | Jul. 31, 2023 | Jun. 30, 2023 | May 31, 2023 | Apr. 30, 2023 | Mar. 31, 2023 | Feb. 28, 2023 | Jan. 31, 2023 | Dec. 31, 2022 | Nov. 30, 2022 | Oct. 31, 2022 | Sep. 30, 2022 | Aug. 31, 2022 | Jul. 31, 2022 | Jun. 30, 2022 | May 31, 2022 | Apr. 30, 2022 | Mar. 31, 2022 | Feb. 28, 2022 | Jan. 31, 2022 | Dec. 31, 2021 | Nov. 30, 2021 | Oct. 31, 2021 | Sep. 30, 2021 | Aug. 31, 2021 | Jul. 31, 2021 | Jun. 30, 2021 | May 31, 2021 | Apr. 30, 2021 | Mar. 31, 2021 | Feb. 28, 2021 | Jan. 31, 2021 | Dec. 31, 2020 | Nov. 30, 2020 | Oct. 31, 2020 | Sep. 30, 2020 | Aug. 31, 2020 | Jul. 31, 2020 | Jun. 30, 2020 | May 31, 2020 | Apr. 30, 2020 | Mar. 31, 2020 | Feb. 29, 2020 | Jan. 31, 2020 | Dec. 31, 2019 | Nov. 30, 2019 | Oct. 31, 2019 | Sep. 30, 2019 | Aug. 31, 2019 | Jul. 31, 2019 | Jun. 30, 2019 | May 31, 2019 | Apr. 30, 2019 | Mar. 31, 2019 | Feb. 28, 2019 | Jan. 31, 2019 | Dec. 31, 2018 | Nov. 30, 2018 | Oct. 31, 2018 | Sep. 30, 2018 | Aug. 31, 2018 | Jul. 31, 2018 | Jun. 30, 2018 | May 31, 2018 | Apr. 30, 2018 | Mar. 31, 2018 | Feb. 28, 2018 | Jan. 31, 2018 | Dec. 31, 2017 | Nov. 30, 2017 | Oct. 31, 2017 | Sep. 30, 2017 | Aug. 31, 2017 | Jul. 31, 2017 | Jun. 30, 2017 | May 31, 2017 | Apr. 30, 2017 | Mar. 31, 2017 | Feb. 28, 2017 | Jan. 31, 2017 | Dec. 31, 2016 | Nov. 30, 2016 | Oct. 31, 2016 | Sep. 30, 2016 | Aug. 31, 2016 | Jul. 31, 2016 | Jun. 30, 2016 | May 31, 2016 | Apr. 30, 2016 | Mar. 31, 2016 | Feb. 29, 2016 | Jan. 31, 2016 | Dec. 31, 2015 | Nov. 30, 2015 | Oct. 31, 2015 | Sep. 30, 2015 | Aug. 31, 2015 | Jul. 31, 2015 | Jun. 30, 2015 | May 31, 2015 | Apr. 30, 2015 | Mar. 31, 2015 | Feb. 28, 2015 | Jan. 31, 2015 | Dec. 31, 2014 | Nov. 30, 2014 | Oct. 31, 2014 | Sep. 30, 2014 | |
| MSCI USA Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI USA Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 33,598 | $ 10,000 | $ 32,807 | $ 32,400 | $ 31,281 | $ 29,855 | $ 31,141 | $ 30,181 | $ 28,644 | $ 28,204 | $ 26,935 | $ 24,614 | $ 25,194 | $ 26,434 | $ 26,887 | $ 25,992 | $ 24,367 | $ 24,210 | $ 23,906 | $ 23,086 | $ 23,664 | $ 22,191 | $ 23,577 | $ 22,361 | $ 20,716 | $ 22,834 | $ 23,765 | $ 21,737 | $ 23,699 | $ 23,751 | $ 26,119 | $ 25,232 | $ 25,993 | $ 27,553 | $ 26,506 | $ 26,775 | $ 25,029 | $ 26,270 | $ 25,517 | $ 24,927 | $ 24,252 | $ 24,136 | $ 22,890 | $ 22,060 | $ 21,499 | $ 21,700 | $ 20,841 | $ 18,680 | $ 19,179 | $ 19,922 | $ 18,530 | $ 17,492 | $ 17,102 | $ 16,256 | $ 14,367 | $ 16,453 | $ 17,914 | $ 17,879 | $ 17,370 | $ 16,741 | $ 16,384 | $ 16,098 | $ 16,382 | $ 16,133 | $ 15,074 | $ 16,092 | $ 15,471 | $ 15,191 | $ 14,699 | $ 13,582 | $ 14,926 | $ 14,641 | $ 15,733 | $ 15,662 | $ 15,160 | $ 14,634 | $ 14,536 | $ 14,190 | $ 14,133 | $ 14,486 | $ 15,038 | $ 14,222 | $ 14,069 | $ 13,654 | $ 13,348 | $ 13,081 | $ 13,039 | $ 12,778 | $ 12,699 | $ 12,528 | $ 12,394 | $ 12,376 | $ 11,908 | $ 11,666 | $ 11,453 | $ 11,054 | $ 11,267 | $ 11,255 | $ 11,238 | $ 10,827 | $ 10,799 | $ 10,605 | $ 10,553 | $ 9,877 | $ 9,897 | $ 10,453 | $ 10,632 | $ 10,595 | $ 9,787 | $ 10,053 | $ 10,703 | $ 10,493 | $ 10,696 | $ 10,555 | $ 10,459 | $ 10,612 | $ 10,026 | $ 10,317 | $ 10,349 | $ 10,081 | $ 9,844 |
| MSCI USA Equal Weighted Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI USA Equal Weighted Index | MSCI USA Equal Weighted Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 26,158 | $ 10,000 | $ 25,533 | $ 24,531 | $ 24,545 | $ 23,921 | $ 25,207 | $ 24,153 | $ 23,097 | $ 23,291 | $ 21,684 | $ 19,758 | $ 20,667 | $ 21,714 | $ 22,439 | $ 21,535 | $ 20,005 | $ 20,499 | $ 20,595 | $ 20,708 | $ 21,418 | $ 19,800 | $ 20,886 | $ 19,652 | $ 18,048 | $ 19,965 | $ 20,632 | $ 18,947 | $ 20,886 | $ 20,873 | $ 22,677 | $ 22,182 | $ 22,451 | $ 23,854 | $ 22,793 | $ 23,490 | $ 22,213 | $ 23,184 | $ 22,652 | $ 22,356 | $ 21,987 | $ 21,672 | $ 20,634 | $ 19,777 | $ 18,796 | $ 18,977 | $ 18,186 | $ 15,932 | $ 16,012 | $ 16,370 | $ 15,659 | $ 14,889 | $ 14,657 | $ 13,785 | $ 12,108 | $ 14,862 | $ 16,273 | $ 16,462 | $ 16,065 | $ 15,477 | $ 15,276 | $ 14,844 | $ 15,325 | $ 15,159 | $ 14,100 | $ 15,128 | $ 14,577 | $ 14,485 | $ 13,935 | $ 12,655 | $ 14,048 | $ 13,693 | $ 14,839 | $ 14,857 | $ 14,513 | $ 14,094 | $ 13,953 | $ 13,727 | $ 13,704 | $ 13,787 | $ 14,387 | $ 13,764 | $ 13,608 | $ 13,117 | $ 12,964 | $ 12,621 | $ 12,719 | $ 12,532 | $ 12,380 | $ 12,295 | $ 12,190 | $ 12,206 | $ 11,825 | $ 11,541 | $ 11,429 | $ 10,870 | $ 11,152 | $ 11,129 | $ 11,106 | $ 10,624 | $ 10,627 | $ 10,465 | $ 10,304 | $ 9,533 | $ 9,450 | $ 10,102 | $ 10,383 | $ 10,350 | $ 9,666 | $ 10,053 | $ 10,703 | $ 10,493 | $ 10,696 | $ 10,555 | $ 10,459 | $ 10,612 | $ 10,026 | $ 10,317 | $ 10,349 | $ 10,081 | $ 9,844 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended | |
| Aug. 31, 2024 | Aug. 31, 2014 | Aug. 31, 2024 | Aug. 31, 2024 | |
| C000087836 | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 20.43% | 11.90% | 9.98% | |
| MSCI USA Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI USA Index | |||
| Average Annual Return, Percent | 27.10% | 15.85% | 12.88% | |
| MSCI USA Equal Weighted Index | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI USA Equal Weighted Index | MSCI USA Equal Weighted Index | ||
| Average Annual Return, Percent | 20.47% | 12% | 10.09% | |
| Shareholder Report, Holdings (Details) - C000087836 | Aug. 31, 2024 |
| Best Buy Co., Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Prudential Financial, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| MetLife, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Zoom Video Communications, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Aflac, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Hartford Financial Services Group, Inc. (The) | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| MongoDB, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Visa, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Mastercard, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Fiserv, Inc. | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| Industrials | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.10% |
| Financials | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.20% |
| Information Technology | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.20% |
| Health Care | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.10% |
| Consumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| Consumer Staples | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| Real Estate | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.20% |
| Materials | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| Utilities | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| Energy | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.70% |
| Communication Services | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
