Unsecured Senior Notes - Unsecured Convertible Senior Notes Outstanding (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2023	Jul. 31, 2023	Dec. 31, 2022	Mar. 31, 2017
Unsecured Senior Notes
Unsecured Senior Notes
Long term debt, gross	$ 2,480,750		$ 2,480,750		$ 2,350,000
Unamortized deferred financing costs	(8,806)		(8,806)		(11,620)
Total carrying amount	2,456,583		2,456,583		2,329,211
Unamortized discount—Convertible Notes
Unsecured Senior Notes
Unamortized discount	(9,085)		(9,085)		(118)
Unamortized discount—Senior Notes
Unsecured Senior Notes
Unamortized discount	$ (6,276)		$ (6,276)		(9,051)
2023 Convertible Notes
Unsecured Senior Notes
Coupon Rate	4.38%		4.38%			4.375%
Effective Rate	4.57%		4.57%
Remaining Period of Amortization			0 years
Long term debt, gross	$ 0		$ 0		250,000
2027 Convertible Notes
Unsecured Senior Notes
Coupon Rate	6.75%		6.75%	6.75%
Effective Rate	7.48%		7.48%
Remaining Period of Amortization			3 years 9 months 18 days
Long term debt, gross	$ 380,750		$ 380,750		0
2023 Senior Notes
Unsecured Senior Notes
Coupon Rate	5.50%		5.50%
Effective Rate	5.71%		5.71%
Remaining Period of Amortization			1 month 6 days
Long term debt, gross	$ 300,000		$ 300,000		300,000
2024 Senior Notes
Unsecured Senior Notes
Coupon Rate	3.75%		3.75%
Effective Rate	3.94%		3.94%
Remaining Period of Amortization			1 year 3 months 18 days
Long term debt, gross	$ 400,000		$ 400,000		400,000
2025 Senior Notes
Unsecured Senior Notes
Coupon Rate	4.75%		4.75%
Effective Rate	5.04%		5.04%
Remaining Period of Amortization			1 year 6 months
Long term debt, gross	$ 500,000		$ 500,000		500,000
2026 Senior Notes
Unsecured Senior Notes
Coupon Rate	3.63%		3.63%
Effective Rate	3.77%		3.77%
Remaining Period of Amortization			2 years 9 months 18 days
Long term debt, gross	$ 400,000		$ 400,000		400,000
2027 Senior Notes
Unsecured Senior Notes
Coupon Rate	4.375%		4.375%
Effective Rate	4.49%		4.49%
Remaining Period of Amortization			3 years 3 months 18 days
Long term debt, gross	$ 500,000		$ 500,000		$ 500,000
LIBOR | 2025 Senior Notes
Unsecured Senior Notes
Long term debt, gross	$ 470,000		$ 470,000
Pricing margin (as a percent)		2.53%
SOFR
Unsecured Senior Notes
Pricing margin (as a percent)	2.53%
SOFR | 2027 Senior Notes
Unsecured Senior Notes
Pricing margin (as a percent)			2.95%