[1.8.x] Clarified the default form widgets for model number fields in docs

Backport of 77f3d7adb1 from master

docs/ref/models/fields.txt

@@ -562,7 +562,9 @@ decimal places::
 
     models.DecimalField(..., max_digits=19, decimal_places=10)
 
-The default form widget for this field is a :class:`~django.forms.TextInput`.
+The default form widget for this field is a :class:`~django.forms.NumberInput`
+when :attr:`~django.forms.Field.localize` is ``False`` or
+:class:`~django.forms.TextInput` otherwise.
 
 .. note::
 
@@ -859,7 +861,9 @@ can change the maximum length using the :attr:`~CharField.max_length` argument.
 
 A floating-point number represented in Python by a ``float`` instance.
 
-The default form widget for this field is a :class:`~django.forms.TextInput`.
+The default form widget for this field is a :class:`~django.forms.NumberInput`
+when :attr:`~django.forms.Field.localize` is ``False`` or
+:class:`~django.forms.TextInput` otherwise.
 
 .. _floatfield_vs_decimalfield:
 
@@ -914,7 +918,8 @@ The default form widget for this field is a
 
 An integer. Values from ``-2147483648`` to ``2147483647`` are safe in all
 databases supported by Django. The default form widget for this field is a
-:class:`~django.forms.TextInput`.
+:class:`~django.forms.NumberInput` when :attr:`~django.forms.Field.localize`
+is ``False`` or :class:`~django.forms.TextInput` otherwise.
 
 ``IPAddressField``
 ------------------