EQUITY OF AMERICAN ASSETS TRUST, INC. - Summary of Income Tax Status of Dividends Per Share Paid (Details) - $ / shares													12 Months Ended
	Dec. 22, 2022	Sep. 22, 2022	Jun. 23, 2022	Mar. 24, 2022	Dec. 23, 2021	Sep. 23, 2021	Jun. 24, 2021	Mar. 25, 2021	Dec. 24, 2020	Sep. 24, 2020	Jun. 25, 2020	Mar. 26, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity [Abstract]
Ordinary income (in USD per share)													$ 1.18	$ 0.73	$ 0.66
Capital gain (in USD per share)													0	0	0
Return of capital (in USD per share)													0.10	0.43	0.34
Total (in dollars per share)	$ 0.32	$ 0.32	$ 0.32	$ 0.32	$ 0.30	$ 0.30	$ 0.28	$ 0.28	$ 0.25	$ 0.25	$ 0.20	$ 0.30	$ 1.28	$ 1.16	$ 1.00
Ordinary income													92.10%	62.60%	66.00%
Capital gain													0.00%	0.00%	0.00%
Return of capital													7.90%	37.40%	34.00%
Total													100.00%	100.00%	100.00%