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    <dei:Security12bTitle contextRef="c-13" id="f-53">3.000% Notes due 2031</dei:Security12bTitle>
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    <dei:SecurityExchangeName contextRef="c-13" id="f-55">NYSE</dei:SecurityExchangeName>
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    <dei:SecurityExchangeName contextRef="c-14" id="f-58">NYSE</dei:SecurityExchangeName>
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    <dei:TradingSymbol contextRef="c-15" id="f-60">IBM 32A</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="c-15" id="f-61">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle contextRef="c-16" id="f-62">3.150% Notes due 2033</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="c-16" id="f-63">IBM 33A</dei:TradingSymbol>
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    <dei:Security12bTitle contextRef="c-17" id="f-65">3.450% Notes due 2034</dei:Security12bTitle>
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    <dei:SecurityExchangeName contextRef="c-17" id="f-67">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle contextRef="c-18" id="f-68">1.250% Notes due 2034</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="c-18" id="f-69">IBM 34</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="c-18" id="f-70">NYSE</dei:SecurityExchangeName>
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    <dei:Security12bTitle contextRef="c-25" id="f-89">3.800% Notes due 2045</dei:Security12bTitle>
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    <dei:Security12bTitle contextRef="c-26" id="f-92">Floating Rate Notes due 2028</dei:Security12bTitle>
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    <dei:Security12bTitle contextRef="c-27" id="f-95">6.22% Debentures due 2027</dei:Security12bTitle>
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    <dei:Security12bTitle contextRef="c-28" id="f-98">6.50% Debentures due 2028</dei:Security12bTitle>
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    <dei:Security12bTitle contextRef="c-29" id="f-101">5.875% Debentures due 2032</dei:Security12bTitle>
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    <dei:SecurityExchangeName contextRef="c-29" id="f-103">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle contextRef="c-30" id="f-104">7.00% Debentures due 2045</dei:Security12bTitle>
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    <dei:SecurityExchangeName contextRef="c-30" id="f-106">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle contextRef="c-31" id="f-107">7.125% Debentures due 2096</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="c-31" id="f-108">IBM 96</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="c-31" id="f-109">NYSE</dei:SecurityExchangeName>
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