$9 billion man? Presidential candidate Donald Trump to unveil details of his personal fortune

Celebrity businessman and Republican presidential candidate Donald Trump is revealing details about a fortune he estimated last month at nearly $9 billion.

That number, if accurate, would make Trump the wealthiest person to ever run for president. He's expected to file a financial disclosure document on Wednesday.

How much Trump will reveal is uncertain. The form asks for estimates only in broad ranges. Even if Trump were to include a full summary of his assets and debts, skepticism remains about his net worth.

Trump, for example, valued his personal brand and marketing deals at $3.3 billion. Forbes Magazine, however, valued his brand at just $125 million. And Trump himself has noted even his own estimates of his wealth can vary based on his mood.