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        <measure>shares</measure>
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        <measure>iso4217:USD</measure>
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        <measure>pure</measure>
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    <dei:EntityRegistrantName contextRef="c-1" id="f-2">ARMOUR Residential REIT, Inc.</dei:EntityRegistrantName>
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    <ffd:FormTp contextRef="c-1" id="f-4">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="c-1" id="f-5">424B5</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="c-1" id="f-6">EX-FILING FEES</ffd:FeeExhibitTp>
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    <ffd:CfwdPrrFctvDt contextRef="c-3" id="f-24">2024-03-28</ffd:CfwdPrrFctvDt>
    <ffd:CfwdPrevslyPdFee contextRef="c-3" decimals="2" id="f-25" unitRef="usd">1371.57</ffd:CfwdPrevslyPdFee>
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    <ffd:TtlPrevslyPdAmt contextRef="c-1" decimals="2" id="f-28" unitRef="usd">0</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="c-1" decimals="2" id="f-29" unitRef="usd">0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="c-1" decimals="2" id="f-30" unitRef="usd">56724.58</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c-2" id="f-31">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:30.02pt"&gt;Calculated in accordance with Rule 457(c) and Rule 457(r) under the Securities Act of 1933, as amended (the &#x201c;Securities Act&#x201d;). As of the date hereof, 544,352 shares offered under the registrant&#x2019;s prospectus supplement, dated January 28, 2026, filed with the Securities and Exchange Commission on January 28, 2026 (Registration No. 333-278327) remain unsold (the &#x201c;Unsold Shares&#x201d;). A registration fee for the Unsold Shares was paid when such shares were initially registered on the Registrant&#x2019;s prospectus supplement dated January 28, 2026 to the Registration Statement on Form S-3 (Registration Statement No. 333-278327) filed by the Registrant on March 28, 2024 under the Securities Act. Pursuant to Rule 415(a)(6) under the Securities Act, the Unsold Shares are included on and offered, in addition to the 25,000,000 shares registered hereby, under this prospectus supplement (Registration No. 333-278327). Accordingly, no filing fee is due for the Unsold Shares.&lt;/span&gt;&lt;div style="margin-top:3pt;padding-left:40.5pt;text-indent:-40.5pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:120%"&gt;(2)&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:30.02pt"&gt;Calculated pursuant to Rule 457(c) and Rule 457(r) under the Securities Act, based upon the average of the high and low price per share of the common stock of the registrant as reported on the New York Stock Exchange on July 22, 2026.&lt;/span&gt;&lt;/div&gt;Calculated in accordance with Rule 457(c) and Rule 457(r) under the Securities Act, based upon the average of the high and low price per share of the common stock of the Registrant as reported on the New York Stock Exchange on January 26, 2026.</ffd:OfferingNote>
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