v3.26.1
Shareholder Report
 6 Months Ended
Apr. 30, 2026
USD ($)
shares
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Nicholas Equity Income Fund, Inc.
Entity Central Index Key 0000913131
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2026
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
CLASS I  
Shareholder Report [Line Items]  
Fund Name Nicholas Equity Income Fund, Inc.
Class Name Nicholas Equity Income Fund, Inc.
Trading Symbol NSEIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Nicholas Equity Income Fund, Inc. (the "Fund") for the period of November 1, 2025 to April 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.nicholasfunds.com/FundMaterials. You can also request this information by contacting us at 1-800-544-6547.
Additional Information Phone Number 1-800-544-6547
Additional Information Website www.nicholasfunds.com/FundMaterials
Expenses [Text Block]
What Were the Portfolio Costs for the Last Six Months?
(based on a hypothetical $10,000 investment)
Portfolio Name Costs of a $10,000 Investment Annualized Costs Paid as a Percentage of a $10,000 Investment
Nicholas Equity Income Fund $35 0.69%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.69%
Net Assets $ 468,070,827
Holdings Count | shares 61
Investment Company, Portfolio Turnover 38.20%
Additional Fund Statistics [Text Block]
Key Fund Statistics
As of April 30, 2026
Net Assets $468,070,827
Number of Portfolio Holdings 61
Portfolio Turnover Rate 38.20%
Holdings [Text Block]
Top Ten Equity Holdings
As of April 30, 2026
Name Percentage of Net Assets
Microsoft Corporation 2.96%
Union Pacific Corporation 2.62%
JPMorgan Chase & Co. 2.61%
PNC Financial Services Group, Inc. 2.52%
Johnson & Johnson 2.43%
U.S. Bancorp 2.39%
Texas Instruments Incorporated 2.35%
Charles Schwab Corporation 2.23%
Mircochip Technology Incorporated 2.22%
NextEra Energy, Inc. 2.17%
Total of top ten 24.50%
Sector Diversification (As a Percentage of Total Investments)
As of April 30, 2026
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Largest Holdings [Text Block]
Top Ten Equity Holdings
As of April 30, 2026
Name Percentage of Net Assets
Microsoft Corporation 2.96%
Union Pacific Corporation 2.62%
JPMorgan Chase & Co. 2.61%
PNC Financial Services Group, Inc. 2.52%
Johnson & Johnson 2.43%
U.S. Bancorp 2.39%
Texas Instruments Incorporated 2.35%
Charles Schwab Corporation 2.23%
Mircochip Technology Incorporated 2.22%
NextEra Energy, Inc. 2.17%
Total of top ten 24.50%