Business Combinations (Narrative) (Details) - USD ($)		12 Months Ended
	Nov. 13, 2018	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Business Combinations [Line Items]
Income (loss) from operations		$ 883,662,000	$ 733,088,000	$ 518,847,000
Revenue from Contract with Customer, Excluding Assessed Tax		3,196,825,000	2,957,013,000	2,606,572,000
Income tax expense (benefit)		409,157,000	111,414,000	114,255,000
Amortization of intangible assets		$ 45,127,000	$ 49,603,000	$ 42,514,000
U.S. Federal income tax rate		21.00%	21.00%
Acquisition related expenses		$ 0
Pro Forma [Member]
Business Combinations [Line Items]
Acquisition related expenses			$ 3,700,000
MatrixCare [Member]
Business Combinations [Line Items]
Percentage of acquisition shares	100.00%
Total purchase price of acquisition	$ 750,000,000.0
Revenues			79,200,000
Gain (loss) from acquisition			(9,100,000)
Amortization of intangible assets		19,000,000.0
Deferred revenue fair value adjustment		$ 5,300,000
MatrixCare [Member] | Excluding Impact Of Fair Value Purchase Price Adjustment To Deferred Revenue [Member]
Business Combinations [Line Items]
Revenues			84,600,000
Gain (loss) from acquisition			15,300,000
MatrixCare [Member] | Pro Forma [Member]
Business Combinations [Line Items]
Income tax expense (benefit)			1,800,000
Amortization of intangible assets			600,000
Net interest expense associated with debt issued			2,600,000
Acquisition related expenses			$ 16,700,000