Acquisitions Schedule of Estimated Fair Values of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Mar. 31, 2016	Jun. 30, 2015
Business Acquisition [Line Items]
Redeemable noncontrolling interests acquired	$ 119
Goodwill	6,888	$ 5,070
naviHealth [Member]
Business Acquisition [Line Items]
Total Identifiable Intangible Assets Acquired	115
Cash and Equivalents	53
Trade Receivables	34
Inventories	0
Prepaid Expense and Other	14
Property and Equipment	5
Other Assets	1
Accounts Payable	(2)
Other accrued liabilities	(93)
Deferred Income Tax Liabilities and Other Liabilities	(43)
Redeemable noncontrolling interests acquired	119
Total identifiable net assets/(liabilities) acquired	(35)
Goodwill	326
Total net assets acquired	291
Harvard Drug Group [Member]
Business Acquisition [Line Items]
Total Identifiable Intangible Assets Acquired	600
Cash and Equivalents	44
Trade Receivables	67
Inventories	49
Prepaid Expense and Other	11
Property and Equipment	16
Other Assets	1
Accounts Payable	(48)
Other accrued liabilities	(36)
Deferred Income Tax Liabilities and Other Liabilities	(104)
Redeemable noncontrolling interests acquired	0
Total identifiable net assets/(liabilities) acquired	600
Goodwill	549
Total net assets acquired	1,149
Cordis [Member]
Business Acquisition [Line Items]
Total Identifiable Intangible Assets Acquired	815
Cash and Equivalents	0
Trade Receivables	0
Inventories	220
Prepaid Expense and Other	4
Property and Equipment	97
Other Assets	17
Accounts Payable	(95)
Other accrued liabilities	(13)
Deferred Income Tax Liabilities and Other Liabilities	0
Redeemable noncontrolling interests acquired	0
Total identifiable net assets/(liabilities) acquired	1,045
Goodwill	828
Total net assets acquired	1,873
Customer relationships | naviHealth [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	38
Customer relationships | Harvard Drug Group [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	470
Customer relationships | Cordis [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	230
Trade Names | naviHealth [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	16
Trade Names | Harvard Drug Group [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	130
Trade Names | Cordis [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	130
Developed technology and other | naviHealth [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	61
Developed technology and other | Harvard Drug Group [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	0
Developed technology and other | Cordis [Member]
Business Acquisition [Line Items]
Identifiable Definite-Lived Intangible Assets	400
In Process Research and Development [Member] | naviHealth [Member]
Business Acquisition [Line Items]
Identifiable Indefinite-Lived Intangible Assets	0
In Process Research and Development [Member] | Harvard Drug Group [Member]
Business Acquisition [Line Items]
Identifiable Indefinite-Lived Intangible Assets	0
In Process Research and Development [Member] | Cordis [Member]
Business Acquisition [Line Items]
Identifiable Indefinite-Lived Intangible Assets	$ 55