Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net (loss) income	$ (103,344)	$ 508,027	$ 716,603
Other comprehensive (loss) gain:
Unrealized losses on available for sale debt securities	(1,236)	(637)	(131)
Losses on interest rate swaps reclassified into earnings from accumulated other comprehensive income	0	0	1,391
Other comprehensive (loss) gain	(1,236)	(637)	1,260
Comprehensive (loss) income	(104,580)	507,390	717,863
Comprehensive loss (income) attributable to noncontrolling interests	(703)	(33,906)	(50,445)
Comprehensive (loss) income attributable to AIR	(105,283)	473,484	667,418
AIMCO Properties, LP [Member]
Net (loss) income	(103,344)	508,027	716,603
Other comprehensive (loss) gain:
Unrealized losses on available for sale debt securities	(1,236)	(637)	(131)
Losses on interest rate swaps reclassified into earnings from accumulated other comprehensive income			1,391
Other comprehensive (loss) gain	(1,236)	(637)	1,260
Comprehensive (loss) income	(104,580)	507,390	717,863
Comprehensive loss (income) attributable to noncontrolling interests	798	(187)	(8,220)
Comprehensive (loss) income attributable to AIR	$ (103,782)	$ 507,203	$ 709,643