Earnings and Dividends per Share and Unit - Summary of Dividend and Distribution Paid per Unit (Details) - $ / shares	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Dividends and distributions paid	$ 0.44	$ 0.41	$ 1.30	$ 1.23

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