Term Loans (Details) € in Millions, £ in Millions	1 Months Ended
	Jan. 31, 2023 USD ($) extension	Sep. 30, 2023 USD ($)	Sep. 30, 2023 GBP (£)	Sep. 30, 2023 EUR (€)	Dec. 31, 2022 USD ($)	Oct. 31, 2018 USD ($)
Multicurrency Unsecured Debt | Unsecured Debt Maturing In January 2024
Debt
Maximum amount of loan	$ 1,500,000,000
Face amount of loan		$ 1,000,000,000
Number of extension options | extension	2
Length of extension option	12 months
Borrowing rate over applicable benchmark rate (in basis points) | extension	80
Stated interest rate (as a percent)		5.00%	5.00%	5.00%
Multicurrency Unsecured Debt | Unsecured Debt Maturing In January 2024 | Term Loans
Debt
Face amount of loan		$ 90,000,000	£ 705.0	€ 85.0
Senior Unsecured Term Loans
Debt
Deferred finance costs balance		$ 2,300,000			$ 200,000
Senior Unsecured Term Loans | $250 million senior unsecured term loan due March 2024
Debt
Face amount of loan						$ 250,000,000
Stated interest rate (as a percent)		3.80%	3.80%	3.80%