Income Taxes	3 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	7. Income Taxes Fluctuations in our provision for income taxes as a percentage of pretax earnings (“effective tax rate”) are due to changes in international and U.S. state effective tax rates resulting from our business mix and discrete items. During the three months ended September 30, 2017 and 2016, the effective tax rate was 34.2 percent and 37.3 percent, respectively. The decrease in the effective tax rate was due to the impact of discrete items. At September 30, 2017 and June 30, 2017, we had $410 million and $417 million of unrecognized tax benefits, respectively. The September 30, 2017 and June 30, 2017 balances include $266 million and $268 million of unrecognized tax benefits, respectively, that if recognized, would have an impact on the effective tax rate. At September 30, 2017 and June 30, 2017, we had $97 million and $99 million, respectively, accrued for the payment of interest and penalties related to unrecognized tax benefits, which we recognize in the provision for income taxes in the condensed consolidated statements of earnings. These balances are gross amounts before any tax benefits and are included in deferred income taxes and other liabilities in the condensed consolidated balance sheets. It is reasonably possible that there could be a change in the amount of unrecognized tax benefits within the next 12 months due to activities of the U.S. Internal Revenue Service or other taxing authorities, possible settlement of audit issues, reassessment of existing unrecognized tax benefits or the expiration of statutes of limitations. We estimate that the range of the possible change in unrecognized tax benefits within the next 12 months is between zero and a net decrease of $35 million, exclusive of penalties and interest. We file income tax returns in the U.S. federal jurisdiction, various U.S. state jurisdictions, and various foreign jurisdictions. With few exceptions, we are subject to audit by taxing authorities for fiscal years 2008 through the current fiscal year. We are a party to a tax matters agreement with CareFusion Corporation ("CareFusion"), which has been acquired by Becton, Dickinson and Company. Under the tax matters agreement, CareFusion is obligated to indemnify us for certain tax exposures and transaction taxes prior to our fiscal 2010 spin-off of CareFusion. The indemnification receivable was $144 million and $142 million at September 30, 2017 and June 30, 2017, respectively, and is included in other assets in the condensed consolidated balance sheets.

7. Income Taxes

Fluctuations in our provision for income taxes as a percentage of pretax earnings (“effective tax rate”) are due to changes in international and U.S. state effective tax rates resulting from our business mix and discrete items.

During the three months ended September 30, 2017 and 2016, the effective tax rate was 34.2 percent and 37.3 percent, respectively. The decrease in the effective tax rate was due to the impact of discrete items.

At September 30, 2017 and June 30, 2017, we had $410 million and $417 million of unrecognized tax benefits, respectively. The September 30, 2017 and June 30, 2017 balances include $266 million and $268 million of unrecognized tax benefits, respectively, that if recognized, would have an impact on the effective tax rate.

At September 30, 2017 and June 30, 2017, we had $97 million and $99 million, respectively, accrued for the payment of interest and penalties related to unrecognized tax benefits, which we recognize in the provision for income taxes in the condensed consolidated statements of earnings. These balances are gross amounts before any tax benefits and are included in deferred income taxes and other liabilities in the condensed consolidated balance sheets.

It is reasonably possible that there could be a change in the amount of unrecognized tax benefits within the next 12 months due to activities of the U.S. Internal Revenue Service or other taxing authorities, possible settlement of audit issues, reassessment of existing unrecognized tax benefits or the expiration of statutes of limitations. We estimate that the range of the possible change in unrecognized tax benefits within the next 12 months is between zero and a net decrease of $35 million, exclusive of penalties and interest.

We file income tax returns in the U.S. federal jurisdiction, various U.S. state jurisdictions, and various foreign jurisdictions. With few exceptions, we are subject to audit by taxing authorities for fiscal years 2008 through the current fiscal year.

We are a party to a tax matters agreement with CareFusion Corporation ("CareFusion"), which has been acquired by Becton, Dickinson and Company. Under the tax matters agreement, CareFusion is obligated to indemnify us for certain tax exposures and transaction taxes prior to our fiscal 2010 spin-off of CareFusion. The indemnification receivable was $144 million and $142 million at September 30, 2017 and June 30, 2017, respectively, and is included in other assets in the condensed consolidated balance sheets.