Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2015
Income Taxes
Effective Income Tax Rate Reconciliation, Percent	37.30%	36.00%	34.70%	37.40%
Net unfavorable/(favorable) discrete items, amount			$ 28,000,000
Unrecognized tax benefits	$ 530,000,000		530,000,000		$ 542,000,000
Unrecognized tax benefits that would impact effective tax rate	348,000,000		348,000,000		357,000,000
Unrecognized tax benefits, interest and penalties accrued	154,000,000		154,000,000		169,000,000
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	222,000,000		222,000,000		$ 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	$ 190,000,000		$ 190,000,000
Federal | Minimum
Income Taxes
Tax years open for examination	2006
Federal | Maximum
Income Taxes
Tax years open for examination	2015
State | Minimum
Income Taxes
Tax years open for examination	2006
State | Maximum
Income Taxes
Tax years open for examination	2015
Foreign | Minimum
Income Taxes
Tax years open for examination	2006
Foreign | Maximum
Income Taxes
Tax years open for examination	2015