Acquisitions (Narrative) (Details) $ in Millions		3 Months Ended
	Oct. 02, 2015 USD ($) country	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)
Business Acquisition [Line Items]
Cash paid for acquisitions, net of cash acquired		$ 9	$ 1,399
Goodwill		7,261		$ 7,167
Goodwill, Acquired During Period		95
Cordis
Business Acquisition [Line Items]
Cash paid for acquisitions, net of cash acquired	$ 1,900
Number of countries in which the entity operates | country	50
Number of principal countries | country	20
Transaction and integration costs		14	$ 21
Goodwill		943
Goodwill, Acquired During Period		82
naviHealth
Business Acquisition [Line Items]
Goodwill		334
Harvard Drug
Business Acquisition [Line Items]
Goodwill		$ 634