Senior Unsecured Notes and Secured Debt - Narrative (Details) - Senior Unsecured Notes £ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2024 USD ($) day	Dec. 31, 2024 USD ($)	Dec. 31, 2024 GBP (£)	May 31, 2023 USD ($)
2.750% Senior Unsecured Notes Due 2028
Debt Instrument [Line Items]
Principal | $				$ 1,035,000,000
Interest rate (in percentage)				2.75%
4.50% Senior Unsecured Notes Due 2034
Debt Instrument [Line Items]
Principal		$ 626,000,000	£ 500,000
Interest rate (in percentage)		4.50%	4.50%
2029 Exchangeable Notes
Debt Instrument [Line Items]
Principal | $	$ 1,035,000,000
Interest rate (in percentage)	3.125%
Debt instrument, convertible, threshold percentage of stock price trigger	130.00%
Debt instrument, convertible, threshold trading days | day	20
Consecutive trading days | day	30
Redemption price, percentage	100.00%
Conversion ratio		0.078218
2028 Exchangeable Notes
Debt Instrument [Line Items]
Conversion ratio		0.104862