Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 795,800	$ 7,989
Other comprehensive income (loss):
Reclassification of losses on cash flow hedges into earnings upon realization	[1]	621	2,338
Unrealized (losses) gains on available-for-sale securities		(3,013)	(1,031)
Unrealized gains (losses) on cash flow hedges		2,755	11,973
Other comprehensive income (loss)		363	13,280
Comprehensive income (loss)		796,163	21,269
Comprehensive (income) loss attributable to noncontrolling interests		(179,071)	(4,978)
Comprehensive income (loss) attributable to iStar Inc.		$ 617,092	$ 16,291

[1] Reclassified to “Net income from discontinued operations” in the Company’s consolidated statements of operations for the three months ended March 31, 2021 is $2,104. Reclassified to “Earnings from equity method investments” in the Company’s consolidated statements of operations for the three months ended March 31, 2022 and 2021 are $621 and $234, respectively.