Voila ce que ça donne:
[root@localhost ~]# yum list installed libreoffice-*
Modules complémentaires chargés : langpacks, refresh-packagekit
http://repos.fedorapeople.org/repos/spot/chromium-stable/fedora-20/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
Essai d'un autre miroir.
Paquets installés
libreoffice-calc.i686 1:4.1.4.2-1.fc20 installed
libreoffice-core.i686 1:4.1.4.2-1.fc20 installed
libreoffice-draw.i686 1:4.1.4.2-1.fc20 installed
libreoffice-emailmerge.i686 1:4.1.4.2-1.fc20 installed
libreoffice-graphicfilter.i686 1:4.1.4.2-1.fc20 installed
libreoffice-impress.i686 1:4.1.4.2-1.fc20 installed
libreoffice-langpack-fr.i686 1:4.1.4.2-1.fc20 installed
libreoffice-math.i686 1:4.1.4.2-1.fc20 installed
libreoffice-opensymbol-fonts.noarch 1:4.1.4.2-1.fc20 installed
libreoffice-pdfimport.i686 1:4.1.4.2-1.fc20 installed
libreoffice-pyuno.i686 1:4.1.4.2-1.fc20 installed
libreoffice-ure.i686 1:4.1.4.2-1.fc20 installed
libreoffice-writer.i686 1:4.1.4.2-1.fc20 installed