# {py:mod}`arelle.FunctionCustom`

```{py:module} arelle.FunctionCustom
```

```{autodoc2-docstring} arelle.FunctionCustom
:allowtitles:
```

## Module Contents

### Functions

````{list-table}
:class: autosummary longtable
:align: left

* - {py:obj}`call <arelle.FunctionCustom.call>`
  - ```{autodoc2-docstring} arelle.FunctionCustom.call
    :summary:
    ```
* - {py:obj}`callCfi <arelle.FunctionCustom.callCfi>`
  - ```{autodoc2-docstring} arelle.FunctionCustom.callCfi
    :summary:
    ```
* - {py:obj}`my_fn_PDxEV <arelle.FunctionCustom.my_fn_PDxEV>`
  - ```{autodoc2-docstring} arelle.FunctionCustom.my_fn_PDxEV
    :summary:
    ```
````

### Data

````{list-table}
:class: autosummary longtable
:align: left

* - {py:obj}`customFunctions <arelle.FunctionCustom.customFunctions>`
  - ```{autodoc2-docstring} arelle.FunctionCustom.customFunctions
    :summary:
    ```
````

### API

`````{py:exception} fnFunctionNotAvailable()
:canonical: arelle.FunctionCustom.fnFunctionNotAvailable

Bases: {py:obj}`Exception`

````{py:method} add_note()
:canonical: arelle.FunctionCustom.fnFunctionNotAvailable.add_note

````

```{py:class} args
:canonical: arelle.FunctionCustom.fnFunctionNotAvailable.args

```

````{py:method} with_traceback()
:canonical: arelle.FunctionCustom.fnFunctionNotAvailable.with_traceback

````

`````

````{py:function} call(xc: arelle.formula.XPathContext.XPathContext, p: arelle.formula.XPathParser.OperationDef, qname: arelle.ModelValue.QName, contextItem: arelle.formula.XPathContext.ContextItem, args: arelle.formula.XPathContext.ResultStack) -> arelle.formula.XPathContext.RecursiveContextItem
:canonical: arelle.FunctionCustom.call

```{autodoc2-docstring} arelle.FunctionCustom.call
```
````

````{py:function} callCfi(xc: arelle.formula.XPathContext.XPathContext, p: arelle.formula.XPathParser.OperationDef, qname: arelle.ModelValue.QName, cfSig: typing.Any, contextItem: arelle.formula.XPathContext.ContextItem, args: arelle.formula.XPathContext.ResultStack) -> typing.Any
:canonical: arelle.FunctionCustom.callCfi

```{autodoc2-docstring} arelle.FunctionCustom.callCfi
```
````

````{py:function} my_fn_PDxEV(xc: arelle.formula.XPathContext.XPathContext, p: arelle.formula.XPathParser.OperationDef, contextItem: arelle.formula.XPathContext.ContextItem, args: arelle.formula.XPathContext.ResultStack) -> list[float]
:canonical: arelle.FunctionCustom.my_fn_PDxEV

```{autodoc2-docstring} arelle.FunctionCustom.my_fn_PDxEV
```
````

````{py:data} customFunctions
:canonical: arelle.FunctionCustom.customFunctions
:type: dict[arelle.ModelValue.QName, typing.Callable]
:value: >
   None

```{autodoc2-docstring} arelle.FunctionCustom.customFunctions
```

````