Debt - March 2026 notes (Details) - USD ($)		9 Months Ended
	Mar. 10, 2021	Sep. 30, 2021	Sep. 30, 2022	Dec. 31, 2021
Debt
Principal amount			$ 1,637,500,000	$ 1,818,200,000
Debt issuance costs		$ 5,657,000
March 2026 Notes
Debt
Principal amount	$ 300,000,000.0		$ 300,000	$ 300,000
Interest rate (as a percent)	2.95%
Net proceeds from issuance of unsecured notes	$ 294,300,000
Offering discount	4,400,000
Debt issuance costs	$ 1,300,000