Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Schedule of Revenue and Gross Trade Receivables Percentage by Major Customers

The following table summarizes historical percent of revenue and gross trade receivables from CVS and OptumRx:

	Percent of Revenue						Percent of Gross Trade Receivables at June 30
	2018		2017		2016		2018		2017
CVS	25	%	23	%	25	%	22	%	20	%
OptumRx	11	%	11	%	7	%	4	%	1	%

Components of Property and Equipment

The following table presents the components of property and equipment, net at June 30:

(in millions)	2018			2017
Land, building and improvements	$	2,115		$	1,637
Machinery and equipment	3,006			2,860
Furniture and fixtures	139			130
Total property and equipment, at cost	5,260			4,627
Accumulated depreciation and amortization	(2,773		)	(2,748		)
Property and equipment, net	$	2,487		$	1,879