Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2017	Jun. 30, 2017
Income Taxes
Effective Income Tax Rate Reconciliation, Percent	34.20%	37.30%
Unrecognized tax benefits	$ 410	$ 417
Unrecognized tax benefits that would impact effective tax rate	266	268
Unrecognized tax benefits, interest and penalties accrued	97	99
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority	144	$ 142
Minimum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	0
Maximum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	$ 35
Federal \| Minimum
Income Taxes
Tax years open for examination	2008
State and Local \| Minimum
Income Taxes
Tax years open for examination	2008
Foreign \| Minimum
Income Taxes
Tax years open for examination	2008

Indemnification receivable from CareFusion related to certain pre-Spin tax exposures and transaction taxes.

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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