Earnings and Dividends per Share and Unit - Summary of Dividend and Distribution Paid per Unit (Details) - $ / shares	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Dividends and distributions paid	$ 0.43	$ 0.41	$ 0.86	$ 0.82

Dividends and distributions paid per share and unit.

No definition available.

Name:	airc_DividendsAndDistributionsPaidPerShareAndUnit
Namespace Prefix:	airc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration