Senior Unsecured Notes and Secured Debt - Summary of Principal Activity (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Amount
Ending balance	$ 14,600,333
Senior unsecured notes
Amount
Beginning balance	11,707,961	$ 11,509,533
Debt issued	1,050,000	1,250,000
Debt extinguished	0	(1,533,752)
Foreign currency	(278,949)	(17,437)
Ending balance	$ 12,479,012	$ 11,208,344
Weighted Avg. Interest Rate
Beginning balance	3.67%	3.67%
Debt issued	0.0308	0.0250
Debt extinguished	0	0.0242
Foreign currency	0.0451	0.0437
Ending balance	3.86%	3.71%
Secured debt
Amount
Beginning balance	$ 2,202,312	$ 2,378,073
Debt issued	89,804	2,693
Debt assumed	221,159	0
Debt extinguished	(276,252)	(70,144)
Principal payments	(44,125)	(48,710)
Foreign currency	(71,577)	7,869
Ending balance	$ 2,121,321	$ 2,269,781
Weighted Avg. Interest Rate
Beginning balance	3.03%	3.27%
Debt issued	0.0457	0.0375
Debt assumed	0.0432	0
Debt extinguished	0.0428	0.0602
Principal payments	0.0336	0.0339
Foreign currency	0.0317	0.0297
Ending balance	3.91%	3.10%