Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg U.S. Universal Index (Reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.58% | 0.06% | 2.44% |
| Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index (Reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.62% | 4.50% | 6.52% |
| BlackRock High Yield Portfolio | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 9.42% | 4.73% | 6.54% |