Debt - Debt Summary (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.60%	1.90%
Weighted Average Term	10 years 4 months 24 days	10 years 2 months 12 days
Debt	$ 17,715,054	$ 16,849,076
Credit Facilities [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	0.80%	0.80%
Weighted Average Term	1 year 7 months 6 days	2 years
Debt	$ 491,393	$ 171,794
Senior Notes [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.70%	2.00%
Weighted Average Term	11 years 7 months 6 days	11 years 2 months 12 days
Debt	$ 14,981,690	$ 14,275,870
Term Loans and Unsecured Other [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	0.50%	0.90%
Weighted Average Term	4 years 2 months 12 days	5 years 7 months 6 days
Debt	$ 1,825,195	$ 1,764,311
Secured Mortgage [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.10%	3.10%
Weighted Average Term	4 years 8 months 12 days	3 years
Debt	$ 416,776	$ 637,101