Revenue Recognition (Rental Income Table) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Leased Assets [Line Items]
Total cash rental income	$ 301,826
Straight-line rent adjustments	1,543	$ 828
Ground rent in revenue	7,738
Increase (Decrease) in Finance Receivables	3,725
Other rental revenue	134
Total revenues	314,966	$ 301,543
Operating Leases, Future Minimum Base Ground Payments Receivable	143,214
Straight Line Rent Adjustments, Net	327,525
Operating Leases, Future Minimum Payments Receivable	16,941,364
Operating Leases, Future Income to Be Recognized	17,412,103
Operating Leases, Future Minimum Base Ground Payments Receivable, Thereafter	87,272
Operating Leases, Future Minimum Payments Receivable, Thereafter	12,192,059
Operating Leases, Future Income to Be Recognized, in Five Years	971,066
Operating Leases, Future Minimum Base Ground Payments Receivable, In Five Years	11,130
Straight Line Rent Adjustments, in Five Years	24,719
Operating Leases, Future Minimum Payments Receivable, in Five Years	935,217
Operating Leases, Future Income to Be Recognized, Thereafter	12,463,566
Straight Line Rent Adjustments, Thereafter	184,235
Operating Leases, Future Income to Be Recognized, in Four Years	1,042,598
Operating Leases, Future Minimum Base Ground Payments Receivable, In Four Years	11,953
Straight Line Rent Adjustments, in Four Years	30,202
Operating Leases, Future Minimum Payments Receivable, in Four Years	1,000,443
Operating Leases, Future Income to Be Recognized, in Three Years	1,042,361
Operating Leases, Future Minimum Base Ground Payments Receivable, In Three Years	11,951
Straight Line Rent Adjustments, in Three Years	31,812
Operating Leases, Future Minimum Payments Receivable, in Three Years	998,598
Operating Leases, Future Income to Be Recognized, in Two Years	1,075,510
Operating Leases, Future Minimum Base Ground Payments Receivable, In Two Years	11,948
Straight Line Rent Adjustments, in Two Years	33,180
Operating Leases, Future Minimum Payments Receivable, in Two Years	1,030,382
Operating Leases, Future Minimum Base Ground Payments Receivable, Current	8,960
Straight Line Rent Adjustments, Current	23,377
Operating Leases, Future Minimum Payments Receivable, Current	784,665
Operating Leases, Future Income to Be Recognized, Current	817,002
Property Subject to Operating Lease
Operating Leased Assets [Line Items]
Total cash rental income	35,508
Building | Property Subject to Operating Lease
Operating Leased Assets [Line Items]
Total cash rental income	214,413
Land | Property Subject to Operating Lease
Operating Leased Assets [Line Items]
Total cash rental income	$ 51,905