Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended							3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2013 Minimum	Jun. 30, 2013 Minimum IRS proposed adjustments related to transfer pricing arrangements	Jun. 30, 2013 Maximum	Jun. 30, 2013 Maximum IRS proposed adjustments related to transfer pricing arrangements	Jun. 30, 2013 Federal	Jun. 30, 2013 State	Jun. 30, 2013 Foreign	Jun. 30, 2013 Retained Earnings	Jun. 30, 2013 Provision for income tax	Mar. 31, 2013 Provision for income tax	Dec. 31, 2012 Provision for income tax	Sep. 30, 2012 Provision for income tax	Jun. 30, 2012 Provision for income tax	Mar. 31, 2012 Provision for income tax	Dec. 31, 2011 Provision for income tax	Sep. 30, 2011 Provision for income tax	Jun. 30, 2011 Provision for income tax	Mar. 31, 2011 Provision for income tax	Dec. 30, 2010 Provision for income tax	Sep. 30, 2010 Provision for income tax
Income Taxes
Unfavorable/(favorable) nondeductible goodwill impairment, percentage	33.20%	0.00%	0.00%
Unfavorable/(favorable) nondeductible goodwill impairment, Value	$ 295
Unfavorable/(favorable) tax adjustments, settlements and unusual provisions	(64)
Unfavorable/(favorable) tax adjustments, settlements and unusual provisions	(7.20%)
Quantifying Misstatement in Current Year Financial Statements, Amount												15.0	14.0	0.6	0.6	0.6	0.6	0.6	0.6	0.6	596.0	596.0	596.0	596.0
Undistributed earnings of non-U.S. subsidiaries to be permanently reinvested	1,800
Tax Carryforward, Gross									146	693	114
Deferred Tax Assets, Tax Credit Carryforwards	158	120
Approximate amount of valuation allowance that applies to federal, state and international loss carryforwards that more likely than not will expire unutilized	76
Unrecognized tax benefits	650	654	747	731
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	371	337	332
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	0
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	335
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	198	209	267
Unrecognized tax benefits, Expense/(Benefit) to Income Tax Penalties and Interest Expense	24	(28)	36
Tax years open for examination					2003		2013
Tax years under examination					2003	2003	2010	2007
Income Tax Examination, Range of Possible Losses							399
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority							142
CareFusion payment to IRS	$ 450