Lamar's salary from the Los Angeles Lakers is OFF-LIMITS. That's his. She can't touch it. (--And we're talking up to $33 million over the next four years.)

But they'll have a joint account for bills and other expenses, and Lamar will be solely responsible for stocking it.

Khloe also gets an annual lump sum. We don't know how much it is, but it's set in stone over the length of the marriage. In other words, they could be married 50 years and it would still theoretically remain the same.

(Although you'd think if they're still married 50 years from now, their finances would have intermingled a long time ago, and we wouldn't be talking about legal documents like this anymore.)

One last detail we hadn't heard yet . . . Lamar is buying them a house. A nice house. It'll cost a minimum of $5 million. (--Khloe's mom, KRIS JENNER, reportedly made Lamar agree to that.)