Income Taxes	6 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 14 – Income Taxes New U.S. tax legislation, which is commonly referred to as the Tax Cuts and Job Act ("the Act") and which was enacted on December 22, 2017, reduces the U.S. federal corporate tax rate from 35% to 21%, requires companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred, and creates new taxes on certain foreign-sourced earnings. Under U.S. generally accepted accounting principles, companies must account for the effects of changes in income tax rates and laws in the period in which the legislation is enacted. However, the U.S. Securities and Exchange Commission (the "SEC") has provided guidance which allows companies to report financial results including provisional amounts that have been recorded for the income tax effects of the Act based upon a reasonable estimate of those effects once the necessary information to determine such an estimate is available. The SEC expects that accounting for the Act should be completed by companies by no later than one year from the enactment date of the Act. As of March 31, 2018, the Company has not completed its accounting for the tax effects of enactment of the Act; however, the Company has made what it believes is a reasonable estimate of the effects on its existing deferred tax balances and the one-time transition tax. As a result of these estimates, the Company recognized a provisional expense in the amount of $275 million, which is reflected in the Company's consolidated statement of income within Income tax provision. The Company will continue to make and adjust its calculations as additional analysis is completed and as it gains a more thorough understanding of the tax law. The Company is currently in the process of evaluating the new Global Intangible Low-Taxed Income’s ("GILTI") provisions and has not yet elected an accounting policy with respect to whether to reflect GILTI in its deferred tax calculations or not. Therefore, the Company has not made any adjustments related to the GILTI tax in its financial statements. Under the SEC guidance noted above, the Company will continue to analyze and assess the effects of the GILTI provisions of the Act. Provisional Amounts The Company believes that all provisional amounts reflected in its financial statements are based on the best estimates that can be made at this time. The Company will continue to analyze all impacts of the Act and will update provisional amounts as required. Deferred tax assets and liabilities The Company remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%. However, the Company is still analyzing certain aspects of the Act and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. The provisional amount recorded related to the re-measurement of the Company's deferred tax balance was a tax benefit of $285 million. Foreign tax effects The one-time transition tax is based on the Company's total post-1986 earnings and profits ("E&P") that the Company previously deferred from U.S. income taxes. The Company recorded a provisional amount for its one-time transition tax liability for all of its foreign subsidiaries, resulting in an increase in income tax expense of $561 million. However, the Company has not yet completed its calculation of the total post-1986 E&P for these foreign subsidiaries. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. This amount may change when the Company finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. As discussed in Note 8, the Company completed its acquisition of Bard on December 29, 2017. The net assets acquired included approximately $220 million of transition tax payable based on the Company's best estimate of its transition tax liability. The combined company's transition tax liability, 8% of which is payable per year over the next five years with the balance payable over the following three years, is approximately $781 million. The anticipated payment of this tax is expected to begin on January 15, 2019. No additional income taxes have been provided for any remaining undistributed foreign earnings not subject to the transition tax, or any additional outside basis difference inherent in these entities, as these amounts continue to be indefinitely reinvested in foreign operations. Determining the amount of unrecognized deferred tax liability related to any remaining undistributed foreign earnings not subject to the transition tax and additional outside basis difference in these entities (i.e., basis difference in excess of that subject to the one-time transition tax) is not practicable.

Note 14 – Income Taxes

New U.S. tax legislation, which is commonly referred to as the Tax Cuts and Job Act ("the Act") and which was enacted on December 22, 2017, reduces the U.S. federal corporate tax rate from 35% to 21%, requires companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred, and creates new taxes on certain foreign-sourced earnings. Under U.S. generally accepted accounting principles, companies must account for the effects of changes in income tax rates and laws in the period in which the legislation is enacted. However, the U.S. Securities and Exchange Commission (the "SEC") has provided guidance which allows companies to report financial results including provisional amounts that have been recorded for the income tax effects of the Act based upon a reasonable estimate of those effects once the necessary information to determine such an estimate is available. The SEC expects that accounting for the Act should be completed by companies by no later than one year from the enactment date of the Act.

As of March 31, 2018, the Company has not completed its accounting for the tax effects of enactment of the Act; however, the Company has made what it believes is a reasonable estimate of the effects on its existing deferred tax balances and the one-time transition tax. As a result of these estimates, the Company recognized a provisional expense in the amount of $275 million, which is reflected in the Company's consolidated statement of income within Income tax provision. The Company will continue to make and adjust its calculations as additional analysis is completed and as it gains a more thorough understanding of the tax law.

The Company is currently in the process of evaluating the new Global Intangible Low-Taxed Income’s ("GILTI") provisions and has not yet elected an accounting policy with respect to whether to reflect GILTI in its deferred tax calculations or not. Therefore, the Company has not made any adjustments related to the GILTI tax in its financial statements. Under the SEC guidance noted above, the Company will continue to analyze and assess the effects of the GILTI provisions of the Act.

Provisional Amounts

The Company believes that all provisional amounts reflected in its financial statements are based on the best estimates that can be made at this time. The Company will continue to analyze all impacts of the Act and will update provisional amounts as required.

Deferred tax assets and liabilities

The Company remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%. However, the Company is still analyzing certain aspects of the Act and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. The provisional amount recorded related to the re-measurement of the Company's deferred tax balance was a tax benefit of $285 million.

Foreign tax effects

The one-time transition tax is based on the Company's total post-1986 earnings and profits ("E&P") that the Company previously deferred from U.S. income taxes. The Company recorded a provisional amount for its one-time transition tax liability for all of its foreign subsidiaries, resulting in an increase in income tax expense of $561 million. However, the Company has not yet completed its calculation of the total post-1986 E&P for these foreign subsidiaries. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. This amount may change when the Company finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. As discussed in Note 8, the Company completed its acquisition of Bard on December 29, 2017. The net assets acquired included approximately $220 million of transition tax payable based on the Company's best estimate of its transition tax liability. The combined company's transition tax liability, 8% of which is payable per year over the next five years with the balance payable over the following three years, is approximately $781 million. The anticipated payment of this tax is expected to begin on January 15, 2019.

No additional income taxes have been provided for any remaining undistributed foreign earnings not subject to the transition tax, or any additional outside basis difference inherent in these entities, as these amounts continue to be indefinitely reinvested in foreign operations. Determining the amount of unrecognized deferred tax liability related to any remaining undistributed foreign earnings not subject to the transition tax and additional outside basis difference in these entities (i.e., basis difference in excess of that subject to the one-time transition tax) is not practicable.