Debt - Debt Summary (Parenthetical) (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.20%	3.10%
Debt	$ 35,302,901	$ 30,879,263
Percentage of outstanding debt	100.00%	100.00%
GBP
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.00%	3.10%
Debt	$ 1,840,612	$ 1,714,653
Percentage of outstanding debt	5.20%	5.60%
CAD
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.50%	4.70%
Debt	$ 1,767,772	$ 1,262,508
Percentage of outstanding debt	5.00%	4.10%
EUR
Debt Instrument [Line Items]
Weighted Average Interest Rate	2.20%	2.10%
Debt	$ 12,291,550	$ 9,900,602
Percentage of outstanding debt	34.80%	32.10%
JPY
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.20%	1.10%
Debt	$ 3,110,101	$ 2,910,755
Percentage of outstanding debt	8.80%	9.40%
USD
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.10%	4.10%
Debt	$ 15,733,734	$ 14,457,872
Percentage of outstanding debt	44.60%	46.80%
Other
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.80%	3.60%
Debt	$ 559,132	$ 632,873
Percentage of outstanding debt	1.60%	2.00%