The former Sun editor, who quit at the height of the phone hacking scandal in July 2011, received "between £6m and £8m", made up of cash payments for loss of service, pension enhancement, money for legal costs, a car and an office, sources told The Guardian.
News International, owned by Rupert Murdoch's News Corporation, has never disclosed the exact figure, but previous reports had suggested that Brooks was given £1.7m in cash, a London office and a chauffeur-driven limousine.
The deal is thought to have "clawback" arrangements, meaning Brooks would have to pay some of the money back in certain circumstances, such as if she was found guilty of a criminal offence relating to her employment.
The 44-year-old will stand trial in September 2013 after being charged with conspiring to intercept communications without lawful authority between October 2000 and August 2006.
Brooks is also facing specific phone hacking charges related to trade union boss Andy Gilchrist and murdered schoolgirl Milly Dowler.
In addition, she is charged with conspiracy to pervert the course of justice over accusations she attempted to conceal evidence from police investigating the phone hacking scandal and illegal payments to public officials.