<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:fnd="http://xbrl.sec.gov/fnd/2026"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="ftp7-20260706.xsd" xlink:type="simple"/>
    <context id="AsOf2026-07-06">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002087899</identifier>
        </entity>
        <period>
            <startDate>2026-07-06</startDate>
            <endDate>2026-07-06</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="AsOf2026-07-06" id="Fact000003">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="AsOf2026-07-06" id="Fact000004">0002087899</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="AsOf2026-07-06" id="Fact000010">S-6</dei:DocumentType>
    <dei:EntityRegistrantName contextRef="AsOf2026-07-06" id="Fact000011">FTP 7</dei:EntityRegistrantName>
    <dei:DocumentPeriodEndDate contextRef="AsOf2026-07-06" id="Fact000012">2026-07-06</dei:DocumentPeriodEndDate>
    <fnd:NmRule35d1TermDfnTextBlock contextRef="AsOf2026-07-06" id="Fact000013">

&lt;p style="font: bold 11pt/12pt Times New Roman, Times, Serif; margin: 2pt 0"&gt;Objective.&lt;/p&gt;

&lt;p style="font: 10pt/11pt Times New Roman, Times, Serif; margin: 2pt 0; text-indent: 0.25in"&gt;The Trust seeks to provide returns that
match the price return of the Underlying ETF up to a predetermined upside cap of 15.19% (before applicable sales charges and
organization costs) while providing a buffer against 100% of Underlying ETF losses (before applicable sales charges and organization
costs) during the period from July 6, 2026 to July 6, 2028. Under normal market conditions, the Trust will invest at least 80% of its
net assets in investments that provide exposure to companies in the S&amp;amp;P 500&lt;sup&gt;&#xae;&lt;/sup&gt; Index. The Trust is concentrated
(i.e., invests 25% or more of Trust assets) in investments that provide exposure to the information technology sector.&lt;/p&gt;

</fnd:NmRule35d1TermDfnTextBlock>
    <fnd:NmRule35d1TermSlctnCritTextBlock contextRef="AsOf2026-07-06" id="Fact000014">

&lt;p style="font: bold 11pt/12pt Times New Roman, Times, Serif; margin: 2pt 0"&gt;The Portfolio.&lt;/p&gt;

&lt;p style="font: 10pt/11pt Times New Roman, Times, Serif; margin: 2pt 0; text-indent: 0.25in"&gt;The Trust seeks to achieve its objective
by investing in a portfolio consisting of purchased and written FLEX Options and cash to pay for the annual operating expenses, creation
and development fee and organization costs of the Trust. Because a portion of your investment is held in cash to pay for these expenses,
and the cap and buffer amounts are determined independent of the cash component, such expenses will not further reduce the cap and buffer
amounts disclosed in this prospectus. The FLEX Options are listed on the Chicago Board Options Exchange (the &#x201c;CBOE&#x201d;) and are
guaranteed by the Options Clearing Corporation (the &#x201c;OCC&#x201d;). The FLEX Options reference shares of the Underlying ETF which
had a share price on the NYSE of $749.18 (the &#x201c;Initial Underlying ETF Level&#x201d;) at the time the FLEX Options were executed and
entitle or obligate the holder to purchase or sell shares of the Underlying ETF at each FLEX Option&#x2019;s strike price on July 6, 2028
(the &#x201c;FLEX Option Expiration Date&#x201d;). The FLEX Options are all European style options, which means that they are exercisable
at the strike price only on the FLEX Option Expiration Date. The FLEX Options are intended to be liquidated on or prior to the FLEX Option
Expiration Date, rather than be exercised, in order to avoid having the Trust receive shares of the Underlying ETF or be obligated to
deliver shares of the Underlying ETF.&lt;/p&gt;

&lt;p style="font: 10pt/11pt Times New Roman, Times, Serif; margin: 2pt 0; text-indent: 0.25in"&gt;The FLEX Options are intended to generate
returns based on the price performance of the Underlying ETF. Please note that the Trust&#x2019;s performance will not reflect the payment
of dividends by the Underlying ETF. The Underlying ETF is an exchange-traded fund (&#x201c;ETF&#x201d;) that seeks to track performance
of the S&amp;amp;P 500&lt;sup&gt;&#xae;&lt;/sup&gt; Index (the &#x201c;Underlying Index&#x201d;). The Underlying Index is composed of selected stocks from
five hundred (500) issuers, all of which are listed on national stock exchanges and spans a broad range of major industries. See &#x201c;The
Underlying ETF and the Underlying Index&#x201d; on page 14. The Trust is designed for Unit holders who intend to purchase Units at the
Trust&#x2019;s inception, the only day Units are available for sale, and hold them until July 6, 2028, the Trust&#x2019;s Mandatory Termination
Date, and seek a percentage total return per Unit that increases by any percentage increase in the price of the Underlying ETF relative
to the Initial Underlying ETF Level up to a maximum total return of 15.19% (before applicable sales charges and organization costs),
11.61% (after sales charges and organization costs for Units purchased through a traditional brokerage account) and 14.19% (after sales
charges and organization costs for Units purchased through a &#x201c;wrap fee&#x201d; account) (the &#x201c;Capped Return&#x201d;), while
also providing downside &#x201c;buffered&#x201d; protection of up to 100% of the decline in the Underlying ETF (before applicable sales
charges and organization costs) (&#x201c;Buffered Protection&#x201d;). The Buffered Protection of up to 100% of Underlying ETF losses is
taken into account before applicable sales charges and organization costs, meaning a Unit holder&#x2019;s maximum loss will be equal to
&#x2013;3.10% for Units purchased through a traditional brokerage account and &#x2013;0.87% for Units purchased through a &#x201c;wrap fee&#x201d;
account. See &#x201c;Fee Table&#x201d; in this prospectus for information regarding these fees and expenses.&lt;/p&gt;



&lt;p style="font: 10pt/11pt Times New Roman, Times, Serif; margin: 2pt 0"&gt;&lt;/p&gt;

&lt;p style="font: 10pt/11pt Times New Roman, Times, Serif; margin: 2pt 0; text-indent: 0.25in"&gt;&lt;span style="letter-spacing: -0.05pt"&gt;The
Capped Return and the Buffered Protection are based on the life of the Trust and are not an annualized rate of return. The percentage
increase or decrease of the Underlying ETF described above is the percentage increase or decrease of the Underlying ETF from when the
FLEX Option strike levels are set on the initial date of deposit to the close of the market on the FLEX Option Expiration Date. The Trust&#x2019;s
ability to achieve its investment objective is dependent on Unit holders purchasing Units at a price equal to their initial net asset
value ($10 per Unit) and holding them until the Trust&#x2019;s Mandatory Termination Date. The price at which you will be able to purchase
Units will be based on their valuation at the Evaluation Time on the Initial Date of Deposit, which will be higher than $10 per Unit (the
Trust&#x2019;s net asset value per Unit on the Initial Date of Deposit) because of the Trust&#x2019;s sales charges and organization costs,
which will impact your potential returns.&lt;/span&gt;&lt;/p&gt;

&lt;p style="font: 10pt/11pt Times New Roman, Times, Serif; margin: 2pt 0; text-indent: 0.25in"&gt;&lt;span style="letter-spacing: -0.05pt"&gt;&lt;b&gt;The
Trust may not be able to achieve the hypothetical returns set forth in this prospectus. The Trust&#x2019;s performance may be impacted
by a variety of factors, including, but not limited to, redemption activity, a dilution of your investment, unusual economic events, market
movements and changes in the liquidity of the FLEX Options. Redemption activity could cause the Trust to recognize income that the Trust
is required to distribute to maintain the Trust&#x2019;s RIC status and avoid the excise tax. Selling Securities to make these distributions
may impact the Trust&#x2019;s performance. The Trust&#x2019;s portfolio is not managed. In the unlikely event that the FLEX Options cannot
maintain their proper ratios, there may be a significant impact to the Trust&#x2019;s ability to meet its investment objective or follow
its principal investment strategy.&lt;/b&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="font: bold 11pt/12pt Times New Roman, Times, Serif; margin: 2pt 0"&gt;Illustrative Market Scenarios.&lt;/p&gt;

&lt;p style="font: 10pt/11pt Times New Roman, Times, Serif; margin: 2pt 0; text-indent: 0.25in"&gt;&lt;span style="letter-spacing: -0.05pt"&gt;The
Trust seeks to provide returns based on the price performance of the Underlying ETF for Units purchased on the Trust&#x2019;s Initial Date
of Deposit at their initial net asset value of $10 per Unit and held until the Trust&#x2019;s Mandatory Termination Date as follows:&lt;/span&gt;&lt;/p&gt;

&lt;table cellpadding="0" cellspacing="0" style="font: 10pt/11pt Times New Roman, Times, Serif; width: 100%; margin-top: 0; margin-bottom: 0"&gt;&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 0"&gt;&lt;/td&gt;&lt;td style="width: 10pt"&gt;&lt;span style="letter-spacing: -0.05pt"&gt;&#x2022;&lt;/span&gt;&lt;/td&gt;&lt;td&gt;&lt;span style="letter-spacing: -0.05pt"&gt;&lt;b&gt;The price of the Underlying ETF increases above a Capped Return of 15.19%. &lt;/b&gt;If, at the
FLEX Option Expiration Date, the price of the Underlying ETF increased by greater than or equal to 15.19% compared to the price of the
Underlying ETF at the Trust&#x2019;s inception, the Trust seeks to provide Unit holders with a maximum total return of 15.19% (before applicable
sales charges and organization costs), 11.61% (after sales charges and organization costs for Units purchased through a traditional brokerage
account) and 14.19% (after sales charges and organization costs for Units purchased through a &#x201c;wrap fee&#x201d; account). If the
price of the Underlying ETF increases above the Capped Return, Unit holders will not participate in those gains beyond the Capped Return.&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;

&lt;table cellpadding="0" cellspacing="0" style="font: 10pt/11pt Times New Roman, Times, Serif; width: 100%; margin-top: 0; margin-bottom: 0"&gt;&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 0"&gt;&lt;/td&gt;&lt;td style="width: 10pt"&gt;&lt;span style="letter-spacing: -0.05pt"&gt;&#x2022;&lt;/span&gt;&lt;/td&gt;&lt;td&gt;&lt;span style="letter-spacing: -0.05pt"&gt;&lt;b&gt;The price of the Underlying ETF increases between 0% and a Capped Return of 15.19%.&lt;/b&gt; If,
at the FLEX Option Expiration Date, the price of the Underlying ETF increased between 0% and 15.19% compared to the price of the Underlying
ETF at the Trust&#x2019;s inception, the Trust seeks to provide Unit holders with a total return that increases by the approximate percentage
increase of the price of the Underlying ETF, up to a maximum return of 15.19% (before applicable sales charges and organization costs),
11.61% (after sales charges and organization costs for Units purchased through a traditional brokerage account) and 14.19% (after sales
charges and organization costs for Units purchased through a &#x201c;wrap fee&#x201d; account).&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;

&lt;table cellpadding="0" cellspacing="0" style="font: 10pt/11pt Times New Roman, Times, Serif; width: 100%; margin-top: 0; margin-bottom: 0"&gt;&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 0"&gt;&lt;/td&gt;&lt;td style="width: 10pt"&gt;&lt;span style="letter-spacing: -0.05pt"&gt;&#x2022;&lt;/span&gt;&lt;/td&gt;&lt;td&gt;&lt;span style="letter-spacing: -0.05pt"&gt;&lt;b&gt;The price of the Underlying ETF decreases between 0% and 100%.&lt;/b&gt; If, at the FLEX Option
Expiration Date, the price of the Underlying ETF decreased between 0% and 100% compared to the price of the Underlying ETF at the Trust&#x2019;s
inception, the Trust seeks to provide Unit holders with a &#x201c;buffered&#x201d; total return of approximately 0.01% less the applicable
sales charges and organization costs, meaning your maximum loss will be equal to &#x2013;3.10% for Units purchased through a traditional
brokerage account and &#x2013;0.87% for Units purchased through a &#x201c;wrap fee&#x201d; account. &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;

&lt;p style="font: bold 11pt/11pt Times New Roman, Times, Serif; margin: 6pt 0 2pt; text-align: center"&gt;&#160;&lt;/p&gt;

</fnd:NmRule35d1TermSlctnCritTextBlock>
</xbrl>
