DOC: improved the docstring of pandas.Index.min()

pandas/core/base.py

@@ -801,7 +801,31 @@ def argmax(self, axis=None):
         return nanops.nanargmax(self.values)
 
     def min(self):
-        """ The minimum value of the object """
+        """
+        Return the minimum value of the Index object.
+
+        Return the minimum value of the object within the same type.
+        The Index of a DataFrame can be accessed as pandas.DataFrame.index.
+
+        Returns
+        -------
+        Scalar or object.
+            minimum value
+
+        See Also
+        --------
+        Index.max : Return the maximum value of the object.
+
+        Examples
+        --------
+        >>> idx = pd.Index([3, 2, 1])
+        >>> idx.min() 
+        1
+
+        >>> idx = pd.Index(['c', 'b', 'a'])
+        >>> idx.min()
+        'a'
+        """
         return nanops.nanmin(self.values)
 
     def argmin(self, axis=None):