ACCOUNTING POLICIES - Schedule of VIEs (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Variable Interest Entity
Total Assets	$ 24,628,155	$ 24,717,786
Total Liabilities	13,742,219	13,491,743
Variable Interest Entity | NHP/PMB L.P.
Variable Interest Entity
Total Assets	756,063	749,834
Total Liabilities	260,217	251,352
Variable Interest Entity | Other identified VIEs
Variable Interest Entity
Total Assets	3,892,070	3,949,294
Total Liabilities	1,532,677	1,556,136
Variable Interest Entity | Tax credit VIEs
Variable Interest Entity
Total Assets	443,332	458,953
Total Liabilities	$ 82,126	$ 103,992