Term Loans (Details) $ in Thousands, € in Millions, £ in Millions	1 Months Ended			3 Months Ended
	Mar. 31, 2026 USD ($) extension_option	Mar. 31, 2026 EUR (€)	Jan. 31, 2024 USD ($)	Mar. 31, 2026 USD ($) extension_option	Mar. 31, 2025 USD ($)	Mar. 31, 2026 GBP (£) extension_option	Dec. 31, 2025 USD ($)
Debt
Proceeds from issuance of unsecured debt				$ 693,900	$ 0
4.91% Unsecured Term Loan Due January 2036 | Cross-currency swaps
Debt
Proceeds from issuance of unsecured debt	$ 500,000	€ 431.0
Unsecured Debt
Debt
Deferred finance costs balance	12,900			12,900			$ 9,400
Unsecured Debt | 4.91% Unsecured Term Loan Due January 2036
Debt
Face amount of loan	$ 693,900			$ 693,900
Stated interest rate (as a percent)	4.91%			4.91%		4.91%
Combined blended interest rate (as a percent)	4.34%			4.34%		4.34%
Outstanding debt balance	$ 693,900			$ 693,900
Unsecured Debt | Multi-Currency Term Loan
Debt
Face amount of loan	1,500,000			1,500,000
Unsecured Debt | Sterling-Denominated Term Loan Facility
Debt
Face amount of loan | £						£ 900.0
Outstanding debt balance	$ 1,200,000			$ 1,200,000
Number of extension options | extension_option	1			1		1
Extension period				12 months
Basis spread on variable rate (as a percent)				0.80%
Debt term				2 years
Unsecured Debt | Sterling-Denominated Term Loan Facility | Variable to fixed interest rate swap
Debt
Derivative, fixed interest rate (as a percent)	4.30%			4.30%		4.30%
Unsecured Debt | $800 Million Term Loan Agreement
Debt
Borrowings			$ 800,000
Unsecured Debt | $800 Million Term Loan Agreement Due August 2025
Debt
Borrowings			300,000
Unsecured Debt | $800 Million Term Loan Agreement Due August 2027
Debt
Borrowings			$ 500,000
Unsecured Debt | $800 Million Term Loan Agreement Due August 2027 | Interest rate swaps
Debt
Derivative, fixed interest rate (as a percent)			3.30%
Unsecured Debt | Term Loan Due June 2025
Debt
Borrowings			$ 500,000