Idle cash is lazy money that lies on accounts you cannot use in a centralize manner. In practice, this cash is usually on the local accounts of the subsidiaries, outside of normal corporate accounts.
Especially large companies may have huge sums of idle cash and minimizing it give a great opportunity to optimize your operating assets. The good news is that optimizing idle cash is relatively easy. In this entry, I will give a few hints to effectively decrease the amount of idle cash.