Summary of Significant Accounting Policies (Effect of Revision on Affected Line Items Within Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Prepaid expenses and other current assets	$ 102,573		$ 127,532	$ 124,968
Total current assets	533,034		557,104	1,012,459
Total assets	2,867,117		3,030,240	3,519,923
Accrued payroll and benefits	56,023		67,792	57,510
Deferred revenue	175,488		149,810	171,937
Total current liabilities	437,920		423,647	526,372
Other liabilities	32,961		73,700	74,380
Total noncurrent liabilities	918,812		1,115,207	1,514,598
Total liabilities	1,356,732		1,538,854	2,040,970
Retained earnings	2,381,506		2,310,396	2,303,650
Accumulated other comprehensive loss	(2,227)		(2,227)	(3,417)
Total shareholders' equity	1,510,385	$ 1,509,217	1,491,386	1,478,953	$ 1,276,993	$ 1,293,517
Total liabilities and shareholders' equity	$ 2,867,117		3,030,240	3,519,923
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Prepaid expenses and other current assets			126,467	123,505
Total current assets			556,039	1,010,996
Total assets			3,029,175	3,518,460
Accrued payroll and benefits			66,642	56,705
Deferred revenue			144,840	167,576
Total current liabilities			417,527	521,206
Other liabilities			65,074	65,729
Total noncurrent liabilities			1,106,581	1,505,947
Total liabilities			1,524,108	2,027,153
Retained earnings			2,322,810	2,314,796
Accumulated other comprehensive loss			(960)	(2,209)
Total shareholders' equity		1,522,722	1,505,067	1,491,307	1,287,890	1,301,070
Total liabilities and shareholders' equity			3,029,175	3,518,460
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Prepaid expenses and other current assets			1,065	1,463
Total current assets			1,065	1,463
Total assets			1,065	1,463
Accrued payroll and benefits			1,150	805
Deferred revenue			4,970	4,361
Total current liabilities			6,120	5,166
Other liabilities			8,626	8,651
Total noncurrent liabilities			8,626	8,651
Total liabilities			14,746	13,817
Retained earnings			(12,414)	(11,146)
Accumulated other comprehensive loss			(1,267)	(1,208)
Total shareholders' equity		$ (13,505)	(13,681)	(12,354)	$ (10,897)	$ (7,553)
Total liabilities and shareholders' equity			$ 1,065	$ 1,463