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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2014 Federal | Jun. 30, 2014 Federal Minimum | Jun. 30, 2014 Federal Maximum | Jun. 30, 2014 State | Jun. 30, 2014 Foreign | Jun. 30, 2014 State and Foreign Jurisdiction Minimum | Jun. 30, 2014 State and Foreign Jurisdiction Maximum | 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, 2014 Provision for income tax | Jun. 30, 2013 Retained Earnings
Income Taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Unfavorable/(Favorable) Discrete Items, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (37) |
Net Unfavorable/(Favorable) Discrete Items, Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2.10%) |
Unfavorable/(favorable) impact of settlements of federal and state tax controversies, settlements and unusual provisions, Amount | (80) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable/(Favorable) Impact of Release of Valuation Allowance, Amount | (12) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable/(Favorable) Impact of remeasurement of unrecognized tax benefits | 65 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable/(favorable) nondeductible goodwill impairment, Percent | 0.00% | 33.20% | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable/(favorable) nondeductible goodwill impairment, Value | 295 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable/(favorable) tax adjustments, settlements and unusual provisions, Value | (64) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable/(favorable) tax adjustments, settlements and unusual provisions, Percent | (7.20%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quantifying Misstatement in Current Year Financial Statements, Amount |  |  |  |  |  |  |  |  |  |  |  | 14.0 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |  | 15.0
Undistributed Earnings of Foreign Subsidiaries | 1,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Credit Carryforward, Amount |  |  |  |  | 210 |  |  | 1,300 | 85 |  |  |  |  |  |  |  |  |  |  |  |
Deferred Tax Assets, Tax Credit Carryforwards | 191 | 158 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approximate amount of valuation allowance that applies to federal, state and international loss carryforwards that more likely than not will expire unutilized | 92 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits | 510 | 650 | 654 | 747 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 322 | 371 | 337 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Increase/(Decrease) in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound | (25) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Increase/(Decrease) in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound | 10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 143 | 198 | 209 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | (46) | 24 | (28) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax years open for examination |  |  |  |  |  | 2006 | 2014 |  |  | 2003 | 2014 |  |  |  |  |  |  |  |  |  |
Tax years under examination |  |  |  |  |  | 2006 | 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax years closed that were under examination |  |  |  |  |  | 2003 | 2005 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority | $ 210 | $ 186 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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