American International Group’s aircraft leasing unit, International Lease Finance Corp., announced Wednesday that Australian financial services conglomerate Macquarie Group Ltd. had bought 53 of its aircraft for $1.99 billion.

ILFR is one of the two largest aircraft leasing companies in the world; the current sale represents roughly five percent of its entire fleet. The planes are leased to 35 airlines in 27 countries, according to Macquarie AirFinance, the planes’ new owner.