v3.25.2
Shareholder Report
 6 Months Ended
Apr. 30, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Tax-Managed Value Portfolio
Entity Central Index Key 0001140883
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2025
C000014305  
Shareholder Report [Line Items]  
Fund Name Tax-Managed Value Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Tax-Managed Value Portfolio (the "Fund") for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at www.eatonvance.com/open-end-mutual-fund-documents.php an selecting Eaton Vance Tax-Managed Value Fund. You can also request this information by contacting us at 1-800-262-1122.
Additional Information Phone Number 1-800-262-1122
Additional Information Website <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 12.8px; margin: 0px; overflow: visible; text-align: left; white-space-collapse: preserve-breaks;">www.eatonvance.com/open-end-mutual-fund-documents.php</span>
Expenses [Text Block]

What were the Fund costs for the last six months?

What were the Fund costs for the last six months?

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Tax-Managed Value Portfolio
$34
0.68%Footnote Reference1
Footnote Description
Footnote1
 Annualized
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.68% [1]
AssetsNet $ 935,222,794
Holdings Count | Holding 71
InvestmentCompanyPortfolioTurnover 31.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets
$935,222,794
# of Portfolio Holdings
71
Portfolio Turnover Rate
31%
Holdings [Text Block]

Sector Allocation (% of total investments)

Group By Asset Type Chart
Value
Value
Short-Term Investments
0.2%
Real Estate
3.4%
Communication Services
3.9%
Materials
5.2%
Utilities
5.7%
Energy
5.9%
Information Technology
6.7%
Consumer Staples
7.1%
Consumer Discretionary
7.3%
Health Care
15.8%
Industrials
16.2%
Financials
22.6%
Largest Holdings [Text Block]

Top Ten Holdings (% of total investments)Footnote Referencea

JPMorgan Chase & Co.
3.6%
Charles Schwab Corp.
3.2%
Home Depot, Inc.
3.1%
Chevron Corp.
2.7%
Sempra
2.6%
PNC Financial Services Group, Inc.
2.4%
Alphabet, Inc., Class A
2.4%
Stryker Corp.
2.3%
Ingersoll Rand, Inc.
2.3%
Micron Technology, Inc.
2.3%
Total
26.9%
Footnote Description
Footnotea
 Excluding cash equivalents
Material Fund Change [Text Block]
Updated Prospectus Phone Number 1-800-262-1122
[1] Annualized