$1M/mo for 10 more years.

“A restating of the airline's financial obligations for concourse D, the now-shuttered Hopkins expansion built in the 1990s for Continental Airlines, which merged with United in 2010. United is still on the hook for paying off the outstanding debt on the $110-million concourse; it should be paid off in 2029.”

https://www.google.com/amp/s/articles.cleveland.com/travel/index.ssf/2016/03/united_airlines_reduces_gate_o.amp