Subsequent Events	3 Months Ended
Mar. 31, 2013
Subsequent Events [Abstract]
Subsequent Events	Note 14. Subsequent Events Subsequent to March 31, 2013, as a result of asset repayments in the CT Legacy Partners Portfolio, the JPMorgan repurchase obligation was reduced by $13.6 million, to $6.6 million as of May 6, 2013. On April 26, 2013, our board of directors approved a one-for-ten reverse stock split of our class A common stock which we effected on May 6, 2013. As a result of the reverse stock split, the number of outstanding shares of our class A common stock was reduced to 2,926,651 as of May 6, 2013. On May 6, 2013, we changed our name from Capital Trust, Inc. to Blackstone Mortgage Trust, Inc. and our stock ticker symbol from “CT” to “BXMT.”

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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