foreach my $arrayItem1(@{$HOAOH1->{details}})
{
    foreach my $arrayItem2(@{$HOAOH2->{details}})
    {
        foreach my $keyArrayItem1(sort keys %$arrayItem1)
        {
            if ($arrayItem1->{$keyArrayItem1} eq $arrayItem2->{$keyArrayItem1})
            {
                print "Match:$arrayItem1->{$keyArrayItem1} $arrayItem2->{$keyArrayItem1}\n";
            }
        }
    }
}

__END__
Match:AB AB
Match:1234 1234
Match:CD CD
Match:5678 5678
Match:EF EF
Match:91011 91011
Match:GH GH
Match:121314 121314
Match:cccc cccc
Match:IJ IJ
Match:151617 151617