Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Taxes
Favorable impact of settlements of federal and state tax controversies, settlements and unusual provisions, amount			$ (80,000,000)
Change in deferred tax assets valuation allowance, amount			(12,000,000)
Unfavorable impact due to remeasurement of unrecognized tax benefits, amount			65,000,000
Undistributed earnings from non-U.S. subsidiaries	$ 2,100,000,000
Deferred tax assets on tax credit carryforwards	193,000,000	$ 197,000,000
Valuation allowance on operating loss carryforwards	92,000,000
Unrecognized tax benefits	527,000,000	542,000,000	510,000,000	$ 650,000,000
Unrecognized tax benefits that would impact effective tax rate	355,000,000	357,000,000	322,000,000
Unrecognized tax benefits, interest and penalties accrued	145,000,000	169,000,000	143,000,000
Unrecognized tax benefits, interest and penalties	9,000,000	24,000,000	$ 46,000,000
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	172,000,000	219,000,000
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	155,000,000
Federal
Income Taxes
Tax credit carryforwards	$ 199,000,000
Federal | Minimum
Income Taxes
Tax years under examination	2006
Tax years open for examination	2006
Tax years closed that were under examination			2003
Federal | Maximum
Income Taxes
Tax years under examination	2014
Tax years open for examination	2016
Tax years closed that were under examination			2005
State and Local
Income Taxes
Tax credit carryforwards	$ 1,200,000,000
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	$ 94,000,000
Foreign | Minimum
Income Taxes
Tax years open for examination	2006
Foreign | Maximum
Income Taxes
Tax years open for examination	2016
Provision for Income Tax
Income Taxes
Net unfavorable/(favorable) discrete items, amount	$ (29,000,000)	$ 15,000,000	$ (37,000,000)
Net unfavorable/(favorable) discrete items, percent	(1.30%)	0.80%	(2.10%)