Senior Unsecured Notes and Secured Debt - Summary of Principal Activity (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Amount
Ending balance	$ 16,049,955
Senior unsecured notes
Amount
Beginning balance	12,584,529	$ 11,707,961
Debt issued	1,035,000	1,050,000
Foreign currency	14,295	(278,949)
Ending balance	$ 13,633,824	$ 12,479,012
Weighted Avg. Interest Rate
Beginning balance	4.06%	3.67%
Debt issued	0.0275	0.0308
Foreign currency	0.0465	0.0451
Ending balance	4.02%	3.86%
Secured debt
Amount
Beginning balance	$ 2,129,954	$ 2,202,312
Debt issued	381,369	89,804
Debt assumed	344,023	221,159
Debt extinguished	(397,381)	(276,252)
Principal payments	(41,646)	(44,125)
Foreign currency	(188)	(71,577)
Ending balance	$ 2,416,131	$ 2,121,321
Weighted Avg. Interest Rate
Beginning balance	4.33%	3.03%
Debt issued	0.0510	0.0457
Debt assumed	0.0702	0.0432
Debt extinguished	0.0661	0.0428
Principal payments	0.0385	0.0336
Foreign currency	0.0391	0.0317
Ending balance	4.83%	3.91%