ACCOUNTING POLICIES - Schedule of VIEs (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Total Assets	$ 24,725,433	$ 24,157,840
Total Liabilities	14,878,392	13,671,513
Variable Interest Entity, Primary Beneficiary | NHP/PMB L.P.
Variable Interest Entity [Line Items]
Total Assets	759,817	741,890
Total Liabilities	266,658	252,518
Variable Interest Entity, Primary Beneficiary | Other identified VIEs
Variable Interest Entity [Line Items]
Total Assets	1,597,957	1,699,949
Total Liabilities	354,828	333,185
Variable Interest Entity, Primary Beneficiary | Tax credit VIEs
Variable Interest Entity [Line Items]
Total Assets	29,746	128,240
Total Liabilities	4,024	16,767
Variable Interest Entity, Primary Beneficiary | Fonds Immobilier Groupe Maurice, S.E.C.
Variable Interest Entity [Line Items]
Total Assets	1,971,410	1,957,075
Total Liabilities	$ 1,204,619	$ 1,170,928