From the LA Times:

Ballmer, who was chief executive of Microsoft for 14 years, was chosen over competitors that included Los Angeles-based investors Tony Ressler and Bruce Karsh and a group that included David Geffen and executives from the Guggenheim Group, the Chicago-based owner of the Los Angeles Dodgers, according to three individuals familiar with the negotiations.

One of the individuals with knowledge of the negotiations said the Geffen group bid $1.6 billion and Ressler at $1.2 billion.

The Geffen group supposedly included an Apple employee by the name of Jimmy Iovine.