| Form N-CSR Cover | 6 Months Ended |
| Sep. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | BlackRock Allocation Target Shares |
| Entity Central Index Key | 0001221845 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| Shareholder Report | 6 Months Ended | |
| Sep. 30, 2024 USD ($) Holding | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | BlackRock Allocation Target Shares | |
| Entity Central Index Key | 0001221845 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Sep. 30, 2024 | |
| C000003891 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | BATS: Series C Portfolio | |
| Class Name | BATS: Series C Portfolio | |
| Trading Symbol | BRACX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about BATS: Series C Portfolio (the “Fund”) for the period of April 1, 2024 to September 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports | |
| Additional Information Phone Number | (800) 441‑7762 | |
| Additional Information Website | blackrock.com/fundreports | |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a BATS: Series C Portfolio $ (a) 0.00 % (b)(c) (a) Rounds to less than $1. (b) Annualized. (c) Rounds to less than 0.01%. | |
| Expenses Paid, Amount | $ 0 | [1] |
| Expense Ratio, Percent | 0% | [2],[3] |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. | |
| Average Annual Return [Table Text Block] | Average annual total returns 6-Month 1 Year 5 Years 10 Years BATS: Series C Portfolio 5.62 % 14.46 % 1.72 % 3.17 % Bloomberg U.S. Aggregate Bond Index 5.26 11.57 0.33 1.84 Bloomberg U.S. Credit Index 5.66 13.81 1.07 2.79 | |
| 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. | |
| Updated Performance Information Location [Text Block] | Visit blackrock.com | |
| Net Assets | $ 456,840,337 | |
| Holdings Count | Holding | 873 | |
| Investment Company Portfolio Turnover | 211% | |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets $ Number of Portfolio Holdings 873 Portfolio Turnover Rate 211 % | |
| Holdings [Text Block] | What did the Fund invest in? (as of September 30, 2024) Portfolio composition Investment Type Percent of Total (a) Corporate Bonds 82.6 % U.S. Treasury Obligations 10.3 % Foreign Government Obligations 3.7 % Preferred Securities 1.5 % Municipal Bonds 1.3 % Foreign Agency Obligations 0.6 % Credit quality allocation Credit Rating (b) Percent of Total (a) AAA/Aaa (c) 10.3 % AA/Aa 5.7 % A 31.8 % BBB/Baa 50.7 % BB/Ba 0.8 % N/R 0.7 % (a) Excludes short-term securities, short investments and options, if any. (b) For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. (c) The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Quality Explanation [Text Block] | The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Ratings Selection [Text Block] | For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. | |
| C000003892 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | BATS: Series M Portfolio | |
| Class Name | BATS: Series M Portfolio | |
| Trading Symbol | BRAMX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about BATS: Series M Portfolio (the “Fund”) for the period of April 1, 2024 to September 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports | |
| Additional Information Phone Number | (800) 441‑7762 | |
| Additional Information Website | blackrock.com/fundreports | |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a BATS: Series M Portfolio $ (a) 0.00 % (b)(c) (a) Rounds to less than $1. (b) Annualized. (c) Rounds to less than 0.01%. | |
| Expenses Paid, Amount | $ 0 | [4] |
| Expense Ratio, Percent | 0% | [5],[6] |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. | |
| Average Annual Return [Table Text Block] | Average annual total returns 6-Month 1 Year 5 Years 10 Years BATS: Series M Portfolio 5.97 % 13.06 % 0.55 % 1.82 % Bloomberg U.S. Aggregate Bond Index 5.26 11.57 0.33 1.84 Bloomberg MBS Index 5.60 12.32 0.04 1.41 | |
| 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. | |
| Updated Performance Information Location [Text Block] | Visit blackrock.com | |
| Net Assets | $ 1,233,967,780 | |
| Holdings Count | Holding | 1,154 | |
| Investment Company Portfolio Turnover | 396% | |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets $ Number of Portfolio Holdings 1,154 Portfolio Turnover Rate 396 % | |
| Holdings [Text Block] | What did the Fund invest in? (as of September 30, 2024) Portfolio composition Investment Type Percent of Total (a) U.S. Government Sponsored Agency Securities 91.8 % Non-Agency Mortgage-Backed Securities 6.1 % Asset-Backed Securities 2.1 % Credit quality allocation Credit Rating (b) Percent of Total (a) AAA/Aaa (c) 97.3 % AA/Aa 0.5 % A 0.2 % BBB/Baa 0.1 % N/R 1.9 % (a) Excludes short-term securities, short investments and options, if any. (b) For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. (c) The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Quality Explanation [Text Block] | The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Ratings Selection [Text Block] | For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. | |
| C000003893 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | BATS: Series S Portfolio | |
| Class Name | BATS: Series S Portfolio | |
| Trading Symbol | BRASX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about BATS: Series S Portfolio (the “Fund”) for the period of April 1, 2024 to September 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports | |
| Additional Information Phone Number | (800) 441‑7762 | |
| Additional Information Website | blackrock.com/fundreports | |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a BATS: Series S Portfolio $ (a) 0.00 % (b)(c) (a) Rounds to less than $1. (b) Annualized. (c) Rounds to less than 0.01%. | |
| Expenses Paid, Amount | $ 0 | [7] |
| Expense Ratio, Percent | 0% | [8],[9] |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. | |
| Average Annual Return [Table Text Block] | Average annual total returns 6-Month 1 Year 5 Years 10 Years BATS: Series S Portfolio 4.38 % 8.56 % 2.33 % 2.52 % Bloomberg U.S. Aggregate Bond Index 5.26 11.57 0.33 1.84 ICE BofA 1-3 Year U.S. Treasury Index 3.84 6.74 1.52 1.42 | |
| 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. | |
| Prior Market Index Comparison [Text Block] | An index that is a subset of ICE BofA US Treasury Index including all securities with a remaining term to final maturity less than 3 years. On December 1, 2023, the Fund began to compare its performance to the standard pricing time of the ICE BofA 1-3 Year U.S. Treasury Index (the “Index”). Index data prior to March 1, 2021 is for the Index’s standard pricing time of 3pm. Index data from March 1, 2021 through November 30, 2023 is for a custom 4pm pricing variant of the Index. Index returns beginning on December 1, 2023 reflect the Index’s new standard pricing time of 4pm. The change of the Index’s standard pricing time from 3pm to 4pm resulted in the discontinuation of the custom 4pm pricing variant used from March 1, 2021 through November 30, 2023. | |
| Updated Performance Information Location [Text Block] | Visit blackrock.com | |
| Net Assets | $ 391,181,350 | |
| Holdings Count | Holding | 613 | |
| Investment Company Portfolio Turnover | 55% | |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets $ Number of Portfolio Holdings 613 Portfolio Turnover Rate 55 % | |
| Holdings [Text Block] | What did the Fund invest in? (as of September 30, 2024) Portfolio composition Investment Type Percent of Total (a) Corporate Bonds 33.2 % Asset-Backed Securities 27.2 % U.S. Treasury Obligations 16.9 % U.S. Government Sponsored Agency Securities 13.0 % Non-Agency Mortgage-Backed Securities 9.4 % Foreign Government Obligations 0.3 % Credit quality allocation Credit Rating (b) Percent of Total (a) AAA/Aaa (c) 62.4 % AA/Aa 2.2 % A 12.9 % BBB/Baa 17.8 % N/R 4.7 % (a) Excludes short-term securities, short investments and options, if any. (b) For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. (c) The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Quality Explanation [Text Block] | The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Ratings Selection [Text Block] | For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. | |
| C000032703 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | BATS: Series P Portfolio | |
| Class Name | BATS: Series P Portfolio | |
| Trading Symbol | BATPX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about BATS: Series P Portfolio (the “Fund”) for the period of April 1, 2024 to September 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports | |
| Additional Information Phone Number | (800) 441‑7762 | |
| Additional Information Website | blackrock.com/fundreports | |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a BATS: Series P Portfolio $ (a) 0.00 % (b)(c) (a) Rounds to less than $1. (b) Annualized. (c) Rounds to less than 0.01%. | |
| Expenses Paid, Amount | $ 0 | [10] |
| Expense Ratio, Percent | 0% | [11],[12] |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. | |
| Average Annual Return [Table Text Block] | Average annual total returns 6-Month 1 Year 5 Years 10 Years BATS: Series P Portfolio 0.10 % 0.52 % 5.07 % 1.29 % Bloomberg U.S. Aggregate Bond Index 5.26 11.57 0.33 1.84 Bloomberg U.S. Treasury 7-10 Year Bond Index 5.57 10.98 (0.69 ) 1.52 Bloomberg U.S. Bellwether 10 Year Swap Index 6.23 12.12 (1.29 ) 1.57 | |
| 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. | |
| Updated Performance Information Location [Text Block] | Visit blackrock.com | |
| Net Assets | $ 4,156,032 | |
| Holdings Count | Holding | 15 | |
| Investment Company Portfolio Turnover | 0% | |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets $ Number of Portfolio Holdings 15 Portfolio Turnover Rate 0 % | |
| Holdings [Text Block] | What did the Fund invest in? (as of September 30, 2024) Portfolio composition Investment Type Percent of Total Fixed-Income Funds 100.0 % | |
| C000144517 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | BATS: Series E Portfolio | |
| Class Name | BATS: Series E Portfolio | |
| Trading Symbol | BATEX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about BATS: Series E Portfolio (the “Fund”) for the period of April 1, 2024 to September 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports | |
| Additional Information Phone Number | (800) 441‑7762 | |
| Additional Information Website | blackrock.com/fundreports | |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a BATS: Series E Portfolio $ (a) 0.06 % (b) (a) Rounds to less than $1. (b) Annualized. | |
| Expenses Paid, Amount | $ 0 | [13] |
| Expense Ratio, Percent | 0.06% | [14] |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. | |
| Average Annual Return [Table Text Block] | Average annual total returns 6-Month 1 Year 5 Years 10 Years BATS: Series E Portfolio 5.39 % 17.61 % 3.15 % 5.05 % Bloomberg Municipal Bond Index 2.69 10.37 1.39 2.52 Bloomberg Municipal High Yield Bond Index 5.88 17.38 3.07 4.52 Customized Reference Benchmark 4.77 15.20 2.56 N/A Customized Reference Benchmark (prior) 3.80 12.78 2.00 N/A | |
| 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. | |
| Prior Market Index Comparison [Text Block] | Beginning July 29, 2024, the Fund started to compare its performance to that of the Customized Reference Benchmark comprised of 60% Bloomberg Municipal Bond: High Yield (non-Investment Grade) Total Return Index, 20% Bloomberg Municipal Bond Rated Baa Index, and 20% Bloomberg Municipal Investment Grade ex BBB. Fund management believes that the new benchmark is more representative of the types of investments held within the Fund. The Customized Reference Benchmark commenced on September 30, 2016. Prior to July 29, 2024, the Fund compared its performance to that of the prior Customized Reference Benchmark, which is comprised of the Bloomberg Municipal Bond Index Total Return Index Value Unhedged (65%) and the Bloomberg Municipal Bond: High Yield (non-Investment Grade) Total Return Index (35%). The prior Customized Reference Benchmark commenced on September 30, 2016. | |
| Updated Performance Information Location [Text Block] | Visit blackrock.com | |
| Net Assets | $ 491,888,736 | |
| Holdings Count | Holding | 623 | |
| Investment Company Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets $ Number of Portfolio Holdings 623 Portfolio Turnover Rate 8 % | |
| Holdings [Text Block] | What did the Fund invest in? (as of September 30, 2024) Sector allocation Sector Percent of Total County/City/Special District/School District 31.9 % Transportation 16.9 % Utilities 15.9 % Education 14.5 % Health Care 11.5 % Tobacco 4.8 % Housing 4.5 % Credit quality allocation Credit Rating (a) Percent of Total AAA/Aaa 1.7 % AA/Aa 18.1 % A 15.5 % BBB/Baa 11.0 % BB/Ba 8.2 % B 1.2 % CCC/Caa 0.3 % N/R 44.0 % (a) For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. | |
| Credit Ratings Selection [Text Block] | For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. | |
| C000146955 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | BATS: Series A Portfolio | |
| Class Name | BATS: Series A Portfolio | |
| Trading Symbol | BATAX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about BATS: Series A Portfolio (the “Fund”) for the period of April 1, 2024 to September 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports | |
| Additional Information Phone Number | (800) 441‑7762 | |
| Additional Information Website | blackrock.com/fundreports | |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a BATS: Series A Portfolio $ (a) 0.01 % (b) (a) Rounds to less than $1. (b) Annualized. | |
| Expenses Paid, Amount | $ 0 | [15] |
| Expense Ratio, Percent | 0.01% | [16] |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. | |
| Average Annual Return [Table Text Block] | Average annual total returns 6-Month 1 Year 5 Years Since Fund BATS: Series A Portfolio 5.03 % 10.65 % 3.30 % 4.63 % Bloomberg U.S. Universal Index 5.40 12.08 0.70 2.15 Reference Benchmark 4.91 10.89 1.80 2.44 | |
| Performance Inception Date | Sep. 21, 2015 | |
| 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. | |
| Updated Performance Information Location [Text Block] | Visit blackrock.com | |
| Net Assets | $ 2,919,758,150 | |
| Holdings Count | Holding | 1,641 | |
| Investment Company Portfolio Turnover | 26% | |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets $ Number of Portfolio Holdings 1,641 Portfolio Turnover Rate 26 % | |
| Holdings [Text Block] | What did the Fund invest in? (as of September 30, 2024) Portfolio composition Investment Type Percent of Total (a) Asset-Backed Securities 52.8 % Non-Agency Mortgage-Backed Securities 46.4 % Floating Rate Loan Interests 0.4 % U.S. Government Sponsored Agency Securities 0.4 % Corporate Bonds — % (b) Credit quality allocation Credit Rating (c) Percent of Total (a) AAA/Aaa (d) 38.4 % AA/Aa 6.9 % A 3.1 % BBB/Baa 3.7 % BB/Ba 3.6 % B 1.0 % CCC/Caa 1.9 % CC/Ca 2.0 % C 0.7 % D 0.1 % N/R 38.6 % (a) Excludes short-term securities, short investments and options, if any. (b) Rounds to less than 0.1%. (c) For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. (d) The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Quality Explanation [Text Block] | The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa. | |
| Credit Ratings Selection [Text Block] | For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change. | |
| C000227189 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | BATS: Series V Portfolio | |
| Class Name | BATS: Series V Portfolio | |
| Trading Symbol | BATVX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about BATS: Series V Portfolio (the “Fund”) for the period of April 1, 2024 to September 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at blackrock.com/fundreports | |
| Additional Information Phone Number | (800) 441‑7762 | |
| Additional Information Website | blackrock.com/fundreports | |
| Expenses [Text Block] | What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a BATS: Series V Portfolio $ (a) 0.01 % (b) (a) Rounds to less than $1. (b) Annualized. | |
| Expenses Paid, Amount | $ 0 | [17] |
| Expense Ratio, Percent | 0.01% | [18] |
| Performance Past Does Not Indicate Future [Text] | Past performance is not an indication of future results. | |
| Average Annual Return [Table Text Block] | Average annual total returns 6-Month 1 Year Since Fund BATS: Series V Portfolio 1.83 % 3.58 % 2.08 % Bloomberg Municipal Bond Index 2.69 10.37 0.15 SIFMA Municipal Swap Index 1.74 3.49 2.08 | |
| Performance Inception Date | May 05, 2021 | |
| 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. | |
| Updated Performance Information Location [Text Block] | Visit blackrock.com | |
| Net Assets | $ 128,807,392 | |
| Holdings Count | Holding | 85 | |
| Investment Company Portfolio Turnover | 145% | |
| Additional Fund Statistics [Text Block] | Key Fund statistics Net Assets $ Number of Portfolio Holdings 85 Portfolio Turnover Rate 145 % | |
| Holdings [Text Block] | What did the Fund invest in? (as of September 30, 2024) Sector allocation Sector Percent of Total County/City/Special District/School District 31.1 % Housing 24.0 % Health Care 18.2 % Education 12.1 % Utilities 11.3 % Transportation 3.3 % | |
| [1]Rounds to less than $1.[2]Annualized.[3]Rounds to less than 0.01%.[4]Rounds to less than $1.[5]Annualized.[6]Rounds to less than 0.01%.[7]Rounds to less than $1.[8]Annualized.[9]Rounds to less than 0.01%.[10]Rounds to less than $1.[11]Annualized.[12]Rounds to less than 0.01%.[13]Rounds to less than $1.[14]Annualized.[15]Rounds to less than $1.[16]Annualized.[17]Rounds to less than $1.[18]Annualized. | ||
| Shareholder Report, Line Graph (Details) | 6 Months Ended | 12 Months Ended | 41 Months Ended | 60 Months Ended | 108 Months Ended | 120 Months Ended |
| Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | |
| C000003891 [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | BATS: Series C Portfolio | |||||
| Average Annual Return, Percent | 5.62% | 14.46% | 1.72% | 3.17% | ||
| C000003892 [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | BATS: Series M Portfolio | |||||
| Average Annual Return, Percent | 5.97% | 13.06% | 0.55% | 1.82% | ||
| C000003893 [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | BATS: Series S Portfolio | |||||
| Average Annual Return, Percent | 4.38% | 8.56% | 2.33% | 2.52% | ||
| C000032703 [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | BATS: Series P Portfolio | |||||
| Average Annual Return, Percent | 0.10% | 0.52% | 5.07% | 1.29% | ||
| C000144517 [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | BATS: Series E Portfolio | |||||
| Average Annual Return, Percent | 5.39% | 17.61% | 3.15% | 5.05% | ||
| C000146955 [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | BATS: Series A Portfolio | |||||
| Average Annual Return, Percent | 5.03% | 10.65% | 3.30% | 4.63% | ||
| C000227189 [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | BATS: Series V Portfolio | |||||
| Average Annual Return, Percent | 1.83% | 3.58% | 2.08% | |||
| Bloomberg U S Aggregate Bond Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||||
| Average Annual Return, Percent | 5.26% | 11.57% | 0.33% | 1.84% | ||
| Bloomberg Municipal Bond Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||
| Average Annual Return, Percent | 2.69% | 10.37% | 0.15% | 1.39% | 2.52% | |
| Bloomberg U S Universal Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Universal Index | |||||
| Average Annual Return, Percent | 5.40% | 12.08% | 0.70% | 2.15% | ||
| Bloomberg U S Credit Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Credit Index | |||||
| Average Annual Return, Percent | 5.66% | 13.81% | 1.07% | 2.79% | ||
| Bloomberg MBS Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg MBS Index | |||||
| Average Annual Return, Percent | 5.60% | 12.32% | 0.04% | 1.41% | ||
| ICE BofA 1 3 Year U S Treasury Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | ICE BofA 1-3 Year U.S. Treasury Index | |||||
| Average Annual Return, Percent | 3.84% | 6.74% | 1.52% | 1.42% | ||
| Bloomberg U S Treasury 7 10 Year Bond Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Treasury 7-10 Year Bond Index | |||||
| Average Annual Return, Percent | 5.57% | 10.98% | (0.69%) | 1.52% | ||
| Bloomberg U S Bellwether 10 Year Swap Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Bellwether 10 Year Swap Index | |||||
| Average Annual Return, Percent | 6.23% | 12.12% | (1.29%) | 1.57% | ||
| Bloomberg Municipal High Yield Bond Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg Municipal High Yield Bond Index | |||||
| Average Annual Return, Percent | 5.88% | 17.38% | 3.07% | 4.52% | ||
| Customized Reference Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Customized Reference Benchmark | |||||
| Average Annual Return, Percent | 4.77% | 15.20% | 2.56% | |||
| Customized Reference Benchmark prior [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Customized Reference Benchmark (prior) | |||||
| Average Annual Return, Percent | 3.80% | 12.78% | 2% | |||
| Reference Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Reference Benchmark | |||||
| Average Annual Return, Percent | 4.91% | 10.89% | 1.80% | 2.44% | ||
| SIFMA Municipal Swap Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | SIFMA Municipal Swap Index | |||||
| Average Annual Return, Percent | 1.74% | 3.49% | 2.08% |
| Shareholder Report, Holdings (Details) | Sep. 30, 2024 | |
| C000003891 [Member] | N R [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.70% | [1],[2] |
| C000003891 [Member] | Standard & Poor's, AAA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.30% | [1],[2],[3] |
| C000003891 [Member] | Standard & Poor's, AA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.70% | [1],[2] |
| C000003891 [Member] | Standard & Poor's, A Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 31.80% | [1],[2] |
| C000003891 [Member] | Standard & Poor's, BBB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 50.70% | [1],[2] |
| C000003891 [Member] | Standard & Poor's, BB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.80% | [1],[2] |
| C000003891 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 82.60% | [1] |
| C000003891 [Member] | Municipal Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.30% | [1] |
| C000003891 [Member] | U S Treasury Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.30% | [1] |
| C000003891 [Member] | Foreign Government Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | [1] |
| C000003891 [Member] | Preferred Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | [1] |
| C000003891 [Member] | Foreign Agency Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.60% | [1] |
| C000003892 [Member] | N R [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | [4],[5] |
| C000003892 [Member] | Standard & Poor's, AAA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 97.30% | [4],[5],[6] |
| C000003892 [Member] | Standard & Poor's, AA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.50% | [4],[5] |
| C000003892 [Member] | Standard & Poor's, A Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.20% | [4],[5] |
| C000003892 [Member] | Standard & Poor's, BBB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.10% | [4],[5] |
| C000003892 [Member] | U S Government Sponsored Agency Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 91.80% | [4] |
| C000003892 [Member] | Non Agency Mortgage Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.10% | [4] |
| C000003892 [Member] | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | [4] |
| C000003893 [Member] | N R [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.70% | [7],[8] |
| C000003893 [Member] | Standard & Poor's, AAA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 62.40% | [7],[8],[9] |
| C000003893 [Member] | Standard & Poor's, AA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | [7],[8] |
| C000003893 [Member] | Standard & Poor's, A Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.90% | [7],[8] |
| C000003893 [Member] | Standard & Poor's, BBB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.80% | [7],[8] |
| C000003893 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 33.20% | [7] |
| C000003893 [Member] | U S Treasury Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.90% | [7] |
| C000003893 [Member] | Foreign Government Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | [7] |
| C000003893 [Member] | U S Government Sponsored Agency Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13% | [7] |
| C000003893 [Member] | Non Agency Mortgage Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.40% | [7] |
| C000003893 [Member] | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 27.20% | [7] |
| C000032703 [Member] | Fixed Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 100% | |
| C000144517 [Member] | N R [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 44% | [10] |
| C000144517 [Member] | Standard & Poor's, AAA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | [10] |
| C000144517 [Member] | Standard & Poor's, AA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 18.10% | [10] |
| C000144517 [Member] | Standard & Poor's, A Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15.50% | [10] |
| C000144517 [Member] | Standard & Poor's, BBB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11% | [10] |
| C000144517 [Member] | Standard & Poor's, BB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.20% | [10] |
| C000144517 [Member] | Standard & Poor's, B Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | [10] |
| C000144517 [Member] | Standard & Poor's, CCC Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | [10] |
| C000144517 [Member] | Transportation Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.90% | |
| C000144517 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15.90% | |
| C000144517 [Member] | County City Special District School District [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 31.90% | |
| C000144517 [Member] | Education [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.50% | |
| C000144517 [Member] | Tobacco [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.80% | |
| C000144517 [Member] | Housing [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.50% | |
| C000144517 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.50% | |
| C000146955 [Member] | N R [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 38.60% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, AAA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 38.40% | [11],[12],[13] |
| C000146955 [Member] | Standard & Poor's, AA Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.90% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, A Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.10% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, BBB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, BB Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, B Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, CCC Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, CC Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, C Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.70% | [11],[12] |
| C000146955 [Member] | Standard & Poor's, D Rating [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.10% | [11],[12] |
| C000146955 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | [11],[14] | |
| C000146955 [Member] | U S Government Sponsored Agency Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.40% | [11] |
| C000146955 [Member] | Non Agency Mortgage Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 46.40% | [11] |
| C000146955 [Member] | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 52.80% | [11] |
| C000146955 [Member] | Floating Rate Loan Interests [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.40% | [11] |
| C000227189 [Member] | Transportation Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.30% | |
| C000227189 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.30% | |
| C000227189 [Member] | County City Special District School District [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 31.10% | |
| C000227189 [Member] | Education [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.10% | |
| C000227189 [Member] | Housing [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 24% | |
| C000227189 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 18.20% | |
| [1]Excludes short-term securities, short investments and options, if any.[2]For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.[3]The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa.[4]Excludes short-term securities, short investments and options, if any.[5]For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.[6]The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa.[7]Excludes short-term securities, short investments and options, if any.[8]For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.[9]The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa.[10]For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.[11]Excludes short-term securities, short investments and options, if any.[12]For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&P Global Ratings or Moody’s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.[13]The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors, individual investments and/or issuers. Using this approach, the investment adviser has deemed unrated U.S. Government Sponsored Agency Securities and U.S. Treasury Obligations to be of similar credit quality as investments rated AAA/Aaa.[14]Rounds to less than 0.1%. | ||
