amount in millions

if you want to change sitewide the unit of the money in millions (or billions/thousands), the following worked perfect for us.

We added the following code in our template.php, for overriding the theme for the money field, where the amount is followed bij 'million'
It even works in the money converter.
Please note, that it only works if you use money field site wide for millions.

function YOURTHEME_money_field($amount, $currency, $display_options, $separator = "\xC2\xA0") {
  $output = '';
  foreach (explode('|', $display_options) as $option) {
    switch ($option) {
      case 'a':
        // The amount.
        $output .= $amount . ' ' .t('million');
        break;
      case 's':
        // Currency symbol.
        $currency_symbols = currency_api_get_symbols();
        if (isset($currency_symbols[$currency])) {
          $output .= $currency_symbols[$currency];
          break;
        }
        // Fall back to currency code.
      case 'c':
        // Currency code.
        $output .= $currency;
        break;
      case '+':
        // Separator.
        $output .= $separator;
        break;
    }
  }
  return $output;
}