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Senior Unsecured Notes and Secured Debt - Narrative (Details) - Senior unsecured notes	1 Months Ended	9 Months Ended
	Jul. 31, 2024 USD ($) day	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Jun. 30, 2026 CAD ($)	May 31, 2023 USD ($)
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Debt extinguished		$ 1,888,206,000	$ 1,299,575,000
2.750% Senior Unsecured Notes Due 2028
Debt Instrument [Line Items]
Interest rate (in percent)					2.75%
Principal amount					$ 1,035,000,000
2029 Exchangeable Notes
Debt Instrument [Line Items]
Interest rate (in percent)	3.125%
Principal amount	$ 1,035,000,000
Debt instrument, convertible, threshold percentage (in percent)	130.00%
Trading days \| day	20
Consecutive trading days \| day	30
Redemption price, percentage (in percent)	100.00%
2028 Exchangeable Notes
Debt Instrument [Line Items]
Debt extinguished		614,749,000
Canadian Dominated Unsecured Debt Due 2026
Debt Instrument [Line Items]
Principal amount		$ 1,933,496,000		$ 2,747,615,000
Debt instrument basis point spread on variable rate				0.05%
Interest rate margin (in percent)		0.65%