Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Income Taxes
Effective Income Tax Rate Reconciliation, Percent	36.90%	34.60%	35.50%	36.30%
Unrecognized tax benefits					$ 542,000,000
Unrecognized tax benefits that would impact effective tax rate	$ 356,000,000		$ 356,000,000		357,000,000
Unrecognized tax benefits, interest and penalties accrued	158,000,000		158,000,000		169,000,000
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	225,000,000		225,000,000		$ 219,000,000
Minimum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	0		0
Maximum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	$ 195,000,000		$ 195,000,000
Federal | Minimum
Income Taxes
Tax years open for examination			2006
Federal | Maximum
Income Taxes
Tax years open for examination			2016
State and Local | Minimum
Income Taxes
Tax years open for examination			2006
State and Local | Maximum
Income Taxes
Tax years open for examination			2016
Foreign | Minimum
Income Taxes
Tax years open for examination			2006
Foreign | Maximum
Income Taxes
Tax years open for examination			2016