Shareholder Report, Line Graph (Details) - USD ($) |
4 Months Ended | 12 Months Ended | 16 Months Ended | 24 Months Ended | 28 Months Ended | 36 Months Ended | 40 Months Ended | 48 Months Ended | 52 Months Ended | 60 Months Ended | 64 Months Ended | 72 Months Ended | 84 Months Ended | 96 Months Ended | 108 Months Ended | 120 Months Ended | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 21, 2020 |
Apr. 30, 2016 |
Apr. 30, 2021 |
Apr. 30, 2026 |
Apr. 30, 2017 |
Apr. 30, 2022 |
Apr. 30, 2018 |
Apr. 30, 2023 |
Apr. 30, 2019 |
Apr. 30, 2024 |
Apr. 30, 2020 |
Apr. 30, 2025 |
Apr. 30, 2021 |
Apr. 30, 2026 |
Apr. 30, 2022 |
Apr. 30, 2023 |
Apr. 30, 2024 |
Apr. 30, 2025 |
Apr. 30, 2026 |
|
| C000198231 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Class K Shares | ||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 10,357 | $ 11,815 | $ 11,091 | $ 9,489 | $ 14,440 | $ 11,178 | $ 10,683 | $ 11,611 | $ 12,209 | $ 18,242 | ||||||||
| C000103257 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Investor C Shares (with sales charge) | ||||||||||||||||||
| Accumulated Value | 10,000 | 10,240 | 11,572 | 10,753 | 9,096 | 13,688 | 10,486 | 9,908 | 10,654 | 11,188 | 16,635 | ||||||||
| C000103256 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Investor A Shares (with sales charge) | ||||||||||||||||||
| Accumulated Value | 9,475 | 9,776 | 11,129 | 10,417 | 8,880 | 13,463 | 10,390 | 9,887 | 10,716 | 11,252 | 16,730 | ||||||||
| C000103258 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||||
| Accumulated Value | 10,000 | 10,357 | 11,815 | 11,091 | 9,488 | 14,423 | 11,159 | 10,661 | 11,582 | 12,198 | 18,183 | ||||||||
| C000121567 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||||
| Accumulated Value | 10,000 | 10,432 | 10,955 | 11,531 | 11,298 | 11,876 | 11,527 | 12,230 | 15,135 | 17,702 | 21,009 | ||||||||
| C000121568 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Investor A Shares (with sales charge) | ||||||||||||||||||
| Accumulated Value | 9,475 | 9,851 | 10,314 | 10,834 | 10,585 | 11,106 | 10,747 | 11,366 | 14,029 | 16,377 | 19,395 | ||||||||
| C000121569 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Investor C Shares (with sales charge) | ||||||||||||||||||
| Accumulated Value | 10,000 | 10,320 | 10,725 | 11,172 | 10,840 | 11,283 | 10,848 | 11,388 | 13,946 | 16,281 | 19,281 | ||||||||
| C000166017 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Class K Shares | ||||||||||||||||||
| Accumulated Value | 10,000 | 10,431 | 10,963 | 11,542 | 11,321 | 11,904 | 11,565 | 12,268 | 15,183 | 17,769 | 21,115 | ||||||||
| C000223507 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Class K Shares | ||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 10,814 | $ 10,155 | $ 10,215 | $ 10,979 | $ 12,377 | $ 14,911 | ||||||||||||
| C000223508 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Investor A Shares (with sales charge) | ||||||||||||||||||
| Accumulated Value | 9,475 | 10,246 | 9,587 | 9,620 | 10,311 | 11,579 | 13,914 | ||||||||||||
| C000223506 [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||||
| Accumulated Value | 10,000 | 10,814 | 10,155 | 10,215 | 10,974 | 12,365 | 14,889 | ||||||||||||
| MSCI Emerging Markets Index Net [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | MSCI Emerging Markets Index (Net) | ||||||||||||||||||
| Accumulated Value | 10,000 | 10,000 | 10,783 | 11,913 | 8,806 | 14,500 | 8,233 | 13,769 | 9,046 | 12,117 | 9,862 | 18,019 | 14,467 | 14,717 | 13,758 | 15,117 | 16,481 | 24,176 | |
| MSCI World Index Net [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | MSCI World Index (Net) | ||||||||||||||||||
| Accumulated Value | 10,000 | 11,465 | 12,981 | 13,822 | 13,268 | 19,282 | 18,604 | 19,195 | 22,724 | 25,487 | 32,917 | ||||||||
| ICE BofA 3 Month U S Treasury Bill Index [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | ICE BofA 3-Month U.S. Treasury Bill Index | ||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 10,040 | $ 10,158 | $ 10,379 | $ 10,594 | $ 10,606 | $ 10,614 | $ 10,914 | $ 11,499 | $ 12,061 | $ 12,537 | ||||||||
| MSCI Emerging Markets Minimum Volatility Index Net [Member] | |||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||
| Line Graph and Table Measure Name | MSCI Emerging Markets Minimum Volatility Index (Net) | ||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 10,662 | $ 10,223 | $ 9,795 | $ 10,260 | $ 11,302 | $ 13,614 | ||||||||||||