Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Income Taxes
Effective Income Tax Rate, Continuing Operations	44.10%	37.20%	34.20%	37.60%
Net Unfavorable/(Favorable) Discrete Items, Amount	$ 38	$ 2	$ (23)	$ 6
Net Unfavorable/(Favorable) Discrete Items, Percentage	7.70%	0.30%	(2.40%)	0.60%
(Favorable) impact of settlement of federal and state tax controversies			(67)
Unrecognized Tax Benefits, Period Increase (Decrease)	56		56
Unrecognized tax benefits	520		520		650
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	339		339		371
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	140		140		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	75		75
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	$ 190		$ 190		$ 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