ido-everywhere

ido-everywhere is a variable defined in `ido.el'.
Its value is

nil

Documentation:
Non-nil if Ido-Everywhere mode is enabled.
See the command `ido-everywhere' for a description of this minor mode.
Setting this variable directly does not take effect;
either customize it (see the info node `Easy Customization')
or call the function `ido-everywhere'.

You can customize this variable.