Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Net income	$ 118,556	$ 100,263
Other comprehensive income
Unrealized gain (loss) on foreign currency translation	21,858	(45,222)
Realized and unrealized (loss) gain on derivative financial instruments	(24,052)	45,514
Other comprehensive (loss) income	(2,194)	292
Comprehensive income	116,362	100,555
Comprehensive income attributable to non-controlling interests	(799)	(576)
Comprehensive income attributable to Blackstone Mortgage Trust, Inc.	$ 115,563	$ 99,979