Business Combinations (Narrative) (Details) - USD ($) $ in Thousands				12 Months Ended
	Jan. 06, 2019	Nov. 13, 2018	Jul. 06, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Oct. 15, 2018
Business Combinations [Line Items]
Revenues				$ 2,606,572	$ 2,340,196	$ 2,066,737
Income (loss) from operations				518,847	521,312	418,743
Amortization of intangible assets				74,900	46,400
Income from operations				579,263	541,831	425,798
Acquisition related expenses				6,123		10,076
Income tax expense (benefit)				$ 114,255	$ 205,724	$ 76,459
U.S. Federal income tax rate				21.00%	28.00%	35.00%
Other Acquisitions [Member]
Business Combinations [Line Items]
Assets acquired				$ 434,064
Acquisition related expenses				6,100
MatrixCare [Member]
Business Combinations [Line Items]
Percentage of acquisition shares		100.00%
Total purchase price of acquisition		$ 750,000		750,000
Revenues				79,200
Income (loss) from operations				(9,100)
Assets acquired				837,721
Deferred revenue, fair value adjustment				5,300
Amortization of intangible assets				19,000
MatrixCare [Member] | Excluding Impact Of Fair Value Purchase Price Adjustment To Deferred Revenue [Member]
Business Combinations [Line Items]
Revenues				84,600
Income (loss) from operations				15,300
MatrixCare [Member] | Pro Forma [Member]
Business Combinations [Line Items]
Amortization of intangible assets				600	$ 8,300
Net interest expense associated with debt issued				2,600	12,700
Acquisition related expenses				3,700	16,700
Income tax expense (benefit)				$ 1,800	$ 3,200
Healthcarefirst [Member]
Business Combinations [Line Items]
Percentage of acquisition shares			100.00%
Total purchase price of acquisition			$ 126,300
HB Healthcare [Member]
Business Combinations [Line Items]
Percentage of acquisition shares							100.00%
Propeller Health [Member]
Business Combinations [Line Items]
Total purchase price of acquisition	$ 242,900
Income (loss) from operations	$ 1,900