Schedule of VIEs (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Total Assets	$ 24,717,786	$ 23,929,404
Total Liabilities	13,491,743	13,415,723
NHP/PMB L.P. | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets	749,834	649,128
Total Liabilities	251,352	238,168
Other identified VIEs | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets	3,949,294	4,095,102
Total Liabilities	1,556,136	1,653,036
Tax credit VIEs | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets	458,953	614,490
Total Liabilities	$ 103,992	$ 204,746