Mr Wilson Uwujaren, Head of Media and Public Information at the EFCC made the declaration on Monday in Abuja.
He stated that verified intelligence reports showed that Idris raked off the funds through bogus consultancies and other illegal activities using proxies, family members and close associates.
Uwujaren added that the funds were laundered through real estate investments in Kano and in Abuja.
He explained that Idris was arrested after he failed to honour invitations by the EFCC to respond to issues connected to the fraudulent acts.