Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2013
Income Taxes
Undistributed earnings from non-U.S. subsidiaries	$ 700,000,000
Deferred tax assets on tax credit carryforwards	378,000,000	$ 193,000,000
Valuation allowance on operating loss carryforwards	223,000,000
Unrecognized tax benefits	417,000,000	527,000,000	$ 542,000,000	$ 510,000,000
Unrecognized tax benefits that would impact effective tax rate	268,000,000	355,000,000	357,000,000
Unrecognized tax benefits, interest and penalties accrued	99,000,000	145,000,000	169,000,000
Unrecognized tax benefits, interest and penalties	12,000,000	9,000,000	$ 24,000,000
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	142,000,000	$ 172,000,000
Minimum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	0
Maximum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	45,000,000
Federal
Income Taxes
Tax credit carryforwards	$ 225,000,000
Federal | Minimum
Income Taxes
Tax years open for examination	2006
Federal | Maximum
Income Taxes
Tax years open for examination	2016
State and Local
Income Taxes
Tax credit carryforwards	$ 1,406,000,000
State and Local | Minimum
Income Taxes
Tax years open for examination	2006
State and Local | Maximum
Income Taxes
Tax years open for examination	2016
Foreign
Income Taxes
Tax credit carryforwards	$ 590,000,000
Foreign | Minimum
Income Taxes
Tax years open for examination	2006
Foreign | Maximum
Income Taxes
Tax years open for examination	2016