I thing I found the solution :
@media(min-width:992px) {
/*Alignement de menu*/
ul.dropdown-menu ul {
left: -190px !important;
}
}
And I add this :
.navbar .pull-left > li > .dropdown-menu .dropdown-menu, .navbar .nav > li > .dropdown-menu.pull-left .dropdown-menu {
font-size: 12px;
right: 100% !important;
}
Thank you