v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
C000234047 [Member] | Foreign Agency Obligations [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.70% [1]
C000234047 [Member] | Municipal Bonds [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.90% [1]
C000234047 [Member] | Corporate Bond Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 90.40% [1]
C000234048 [Member] | Foreign Agency Obligations [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.80% [2]
C000234048 [Member] | Municipal Bonds [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50% [2]
C000234048 [Member] | Corporate Bond Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 88.70% [2]
C000234049 [Member] | U S Government Sponsored Agency Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80% [3]
C000234049 [Member] | U S Treasury Obligations [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.20% [3]
C000234050 [Member] | U S Government Sponsored Agency Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40% [4]
C000234050 [Member] | U S Treasury Obligations [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.60% [4]
C000234051 [Member] | Corporate Bond Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [5]
C000234051 [Member] | U S Government Sponsored Agency Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.00% [5]
C000234051 [Member] | Non Agency Mortgage Backed Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.50% [5]
C000234051 [Member] | Asset-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40% [5]
C000253864 [Member] | BlackRock Cash Funds Treasury SL Agency Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000253864 [Member] | U S Treasury Bills 4 32 07 14 26 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000253864 [Member] | U S Treasury Bills 4 40 06 02 26 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000253864 [Member] | U S Treasury Bills 4 00 08 14 26 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253864 [Member] | U S Treasury Bills 3 79 08 24 26 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253864 [Member] | U S Treasury Bills 4 03 02 19 27 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253864 [Member] | U S Treasury Bills 3 98 08 10 26 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253864 [Member] | U S Treasury Bills 4 05 11 13 26 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253864 [Member] | U S Treasury Bills 3 75 02 05 27 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000253864 [Member] | U S Treasury Bills 3 90 09 14 26 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000253864 [Member] | U S Treasury Obligations [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 59.80%
C000253864 [Member] | Commercial Paper [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000253864 [Member] | Certificates of Deposit [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.30%
C000253864 [Member] | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000253864 [Member] | Futures contracts net cumulative appreciation [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.60%
C000253864 [Member] | Liabilities in Excess of Other Assets [Member]  
Holdings [Line Items]  
Percent of Net Asset Value (5.20%)
[1]
Excludes short-term securities.
[2]
Excludes short-term securities.
[3] Excludes short-term securities.
[4]
Excludes short-term securities.
[5]
Excludes short-term securities.