Even with the Rio Olympics posting lower ratings than the London Games four years ago, NBCUniversal made $250 million on the event.

That’s the number put out by CEO Steve Burke, who discussed the undertaking today at the Bank of America Merrill Lynch 2016 Media, Communications and Entertainment Conference at the Beverly Wilshire Hotel. Burke cited a 20% increase in ad sales.

Deadline.com notes: “Ratings were down about 17% in prime time this summer compared with the strong London Summer Olympics in 2012, and about 25% in the key 18-49 demo.”

But Burke called the Olympics a “tremendous success,” according to Deadline, which quotes the executive saying: “All the advertisers we talked to can’t wait to come back for Korea and Japan.”