Customizing placehorlder in billing/shipping forms

I am using woocommerce_checkout_fields filter for customizing the placeholders in WooCommerce checkout page.

  add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );
  function custom_override_checkout_fields( $fields ) {
    $fields['billing']['billing_first_name']['placeholder'] = 'Name';
    $fields['billing']['billing_last_name']['placeholder'] = 'Surname';
    $fields['billing']['billing_email']['placeholder'] = 'Email';
    $fields['billing']['billing_company']['placeholder'] = 'Company Name';
    $fields['billing']['billing_phone']['placeholder'] = 'Phone';
    $fields['billing']['billing_postcode']['placeholder'] = 'Zip Code';
    $fields['billing']['billing_city']['placeholder'] = 'City';

    $fields['shipping']['shipping_first_name']['placeholder'] = 'Name';
    $fields['shipping']['shipping_last_name']['placeholder'] = 'Surname';
    $fields['shipping']['shipping_city']['placeholder'] = 'City';
    $fields['shipping']['shipping_postcode']['placeholder'] = 'Zip Code';
    return $fields;
  }

This work fine only for checkout page form.

How to customize 'placeholders' in all shipping and billing forms?

Thanks.

via Chebli Mohamed