Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013
Income Taxes
Effective Income Tax Rate, Continuing Operations	23.20%	38.10%
Net Unfavorable/(Favorable) Discrete Items, Amount	$ (61)	$ 4
Net Unfavorable/(Favorable) Discrete Items, Percentage	(13.70%)	1.00%
(Favorable) impact of settlement of federal and state tax controversies	(63)
Unrecognized tax benefits	452		650
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	281		371
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	131		198
Significant Increase/(Decrease) in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	(20)
Significant Increase/(Decrease) in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	5
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	$ 171		$ 186
Minimum
Income Taxes
Tax years open for examination	2003
Tax years under examination	2006
Tax years closed that were under examination	2003
Maximum
Income Taxes
Tax years open for examination	2014
Tax years under examination	2010
Tax years closed that were under examination	2005