Why not go to thier yahoo page, find thier balance sheet, and look up the debt figures? Since the Yahoo quarterly b/s isn't updated, try google (it's there.)
As of 10/4: "Freeport has paid down nearly half the debt it incurred from the takeover, the company says. Freeport's debt now stands at $7.7 billion, down from $14.2 billion at the time of the buy."
Ok, $7.7B less $620M. Other key pieces as of 9/30: $2.3B in cash, $2.1B in receivables, 2.7 in inventory offest by $4.6 in current liabilities. Q2 debt retired: $2.3B CashF excl debt pmts: $1.6B Q3 debt retired: $1.0B CashF excl debt pmts: $1.6B