v3.25.4
Shareholder Report, Average Annual Return (Details)
12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
C000162163      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Value Line Larger Companies Focused Fund Inc.-Institutional Class    
C000020637      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Value Line Larger Companies Focused Fund Inc.-Investor Class    
Without Sales Load [Member] | C000162163      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.92% 10.46% 15.26%
Without Sales Load [Member] | C000020637      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.58% 10.18% 15.01%
VALUELINE INDEX: S&P 500®      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index    
Average Annual Return, Percent 17.88% 14.42% 14.82%
VALUELINE INDEX: S&P 500®      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index    
Average Annual Return, Percent 17.88% 14.42% 14.82%
VALUELINE INDEX: RUSSELL 1000® GROWTH INDEX      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index    
Average Annual Return, Percent 18.56% 15.32% 18.13%
VALUELINE INDEX: RUSSELL 1000® GROWTH INDEX      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index    
Average Annual Return, Percent 18.56% 15.32% 18.13%