Acquisitions (Narrative) (Details) $ in Millions		3 Months Ended		9 Months Ended
	Oct. 02, 2015 USD ($) country	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)
Business Acquisition [Line Items]
Cash paid for acquisitions, net of cash acquired				$ 113	$ 3,383
Goodwill		$ 7,209		7,209		$ 7,167
Goodwill, Acquired During Period				57
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		16	$ 13	46	$ 54
Goodwill		914		914
Goodwill, Acquired During Period				53
naviHealth
Business Acquisition [Line Items]
Goodwill		322		322
Harvard Drug
Business Acquisition [Line Items]
Goodwill		$ 634		$ 634