I have seen a statement from the minister about closing detention facilities and saving $78 million. The minister said:

Detention centres at Woomera and Singleton will be closed with plans to build further centres at Melbourne and Brisbane shelved.

Could the parliamentary secretary help me with the details of how that $78 million is arrived at? I assume that much of it is attributable to closing existing centres and saving the running costs there. How much of the saving is attributable to not building new centres? Does it include not having to run the new centres and that sort of thing?