[Tex/LaTex] Hanging Indents / Text Wrapping

formattinghorizontal alignmentindentationparagraphs

I'm trying to implement a command to be used in place of the itemize/enumerate environments. The idea is that I want to have a command (\detail), which can be used to construct an itemized list without being contained in an environment. The problem I'm having is that when a line is longer than the page width and consequently wraps to the next line, I don't seem to have any control over the indentation of the wrapped text. I've tried the hanging package and \hangindent, but haven't had much luck.

I've included a minimum example below and the output that I get when compiled. Ideally, I would like the wrapped text to be indented such that the first word on the second line aligns with the first word of the first line.

\documentclass{article}
\newcommand{\detail}[1]{-- {#1}}

\begin{document}
    \noindent\textbf{This is a header}\\
    \detail{This is a detail.}\\
    \detail{This is a detail that has too many words in it and consequently runs onto the next line of the page, and I want it to have a hanging indent.}
\end{document}

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Best Answer

A simplification of the already answered: 

\documentclass{article}
\def\D{\par\noindent\makebox[1em][l]{-- }\hangindent1em}
\begin{document}
\subsubsection*{This is a header}
\D This is a detail
\D This is a detail that has too many words in it and consequently runs onto The next line of the page, and I want it to have a hanging indent.
\end{document}

MWE

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