Debt Debt, Textuals (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.20%
Letters of Credit, Maximum Borrowing Capacity	$ 1,000		$ 1,000		$ 39,000
Line of Credit Facility, Remaining Borrowing Capacity	1,214,000		1,214,000
Repayments of Other Debt			6,500	$ 5,300
Repayments of Debt			509,200	1,228,500
Losses on early extinguishment of debt, net	0	$ (25)	0	(25)
Interest Paid, Including Capitalized Interest, Operating and Investing Activities			159,500	172,500
Unamortized Debt Issuance Expense	$ 38,513		38,513		$ 43,981
Proceeds from Issuance of Debt			$ 688,500	$ 1,336,100
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.67%		4.67%		4.64%
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate	6.26%		6.26%		6.50%
Total Debt with Fixed Interest	81.00%	84.00%	81.00%	84.00%
Proceeds from Construction Loans Payable			$ 33,533	$ 0
Payments of Debt Issuance Costs			0	15,246
Increase (Decrease) in Insurance Liabilities			46,000
April 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment				500
January 2028
Debt Instrument [Line Items]
Notes Payable to Bank, Noncurrent	$ 628,594		628,594		$ 641,250
Line of Credit Facility, Amount Outstanding	285,000		285,000		120,000
Line of Credit Facility, Increase (Decrease), Net			655,000	530,000
Debt Instrument, Periodic Payment			12,700	12,700
Payments of Debt Issuance Costs			14,100
Bank Credit Facility 2028
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	285,000		285,000		120,000
Debt Instrument, Periodic Payment			490,000	1,210,000
October 2032
Debt Instrument [Line Items]
Line of Credit Facility, Increase (Decrease), Net				800,000
Building Credit Facility February 2037
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	33,533	$ 0	33,533	$ 0
Proceeds from Construction Loans Payable			33,500
Unsecured Debt [Member] | April 2027 [Member]
Debt Instrument [Line Items]
Senior Notes	136,924		136,924		136,924
Unsecured Debt [Member] | December 2027 [Member]
Debt Instrument [Line Items]
Senior Notes	550,000		550,000		550,000
Unsecured Debt [Member] | August 2030
Debt Instrument [Line Items]
Senior Notes	850,000		850,000		850,000
Unsecured Debt [Member] | June 2029 [Member]
Debt Instrument [Line Items]
Senior Notes	750,000		750,000		750,000
Unsecured Debt [Member] | May 2031
Debt Instrument [Line Items]
Senior Notes	800,000		800,000		800,000
Unsecured Debt [Member] | October 2032
Debt Instrument [Line Items]
Senior Notes	$ 800,000		$ 800,000		$ 800,000