Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Income Taxes
Effective Income Tax Rate, Continuing Operations	38.00%	22.70%	35.50%	32.70%
Net Unfavorable/(Favorable) Discrete Items, Amount	$ 5	$ (57)	$ (18)	$ (51)
Net Unfavorable/(Favorable) Discrete Items, Percentage	1.00%	(12.70%)	(1.20%)	(3.70%)
Unrecognized Tax Benefits, Period Increase (Decrease)	5		61
Favorable impact of release of valuation allowance			(12)
Favorable impact of settlement of federal and state tax controversies			(67)
Tax Adjustments, Settlements, and Unusual Provisions		(64)		(64)
Unrecognized tax benefits	539		539		650
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	348		348		371
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	147		147		198
Significant Increase/(Decrease) in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	0		0
Significant Increase/(Decrease) in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	90		90
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	$ 203		$ 203		$ 186
Internal Revenue Service (IRS) | Minimum
Income Taxes
Tax years open for examination			2006
Tax years under examination			2006
Tax years closed that were under examination			2003
Internal Revenue Service (IRS) | Maximum
Income Taxes
Tax years open for examination			2014
Tax years under examination			2010
Tax years closed that were under examination			2005
State and Foreign Jurisdiction | Minimum
Income Taxes
Tax years open for examination			2003
State and Foreign Jurisdiction | Maximum
Income Taxes
Tax years open for examination			2014