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

12 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Schedule of Revenue and Gross Trade Receivables Percentage by Major Customers

The table below summarizes historical percent of revenue and gross trade receivables from CVS and OptumRx.

	Percent of Revenue						Percent of Gross Trade Receivables at June 30
	2017		2016		2015		2017		2016
CVS	23	%	25	%	27	%	20	%	22	%
OptumRx	11	%	7	%	0	%	1	%	1	%

Components of Property and Equipment

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

(in millions)	2017			2016
Land, building and improvements	$	1,637		$	1,735
Machinery and equipment	2,860			2,608
Furniture and fixtures	130			133
Total property and equipment, at cost	4,627			4,476
Accumulated depreciation and amortization	(2,748		)	(2,680		)
Property and equipment, net	$	1,879		$	1,796