Income Taxes	6 Months Ended
Apr. 30, 2018
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income Taxes	Income Taxes Recent Tax Legislation The Tax Cuts and Jobs Act (2017 Act) was enacted into law on December 22, 2017 and significantly changes existing U.S. tax law. The 2017 Act adopts a territorial tax system, imposes a mandatory one-time transition tax on earnings of foreign subsidiaries that were previously tax deferred, and reduces the U.S. federal statutory tax rate from 35% to 21%. The reduction in the U.S. federal statutory tax rate is effective on January 1, 2018 which requires the Company to use a blended tax rate for fiscal 2018. Our blended tax rate is 23.34% for fiscal 2018 and is calculated by applying a pro-rated percentage based on the number of days in our fiscal 2018 before and after the January 1, 2018 effective date. For fiscal 2019 and subsequent years, the Company will utilize the enacted U.S. federal statutory tax rate of 21%. The 2017 Act includes several provisions that are effective for our fiscal 2019: (i) tax on global intangible low-taxed income (GILTI) of foreign subsidiaries, (ii) tax on certain payments between a U.S. Corporation and its foreign subsidiaries referred to as the base erosion and anti-abuse tax (BEAT), (iii) limitation on the tax deduction for interest payments, and (iv) expanded limitation on the tax deduction for compensation paid to certain executives. The 2017 Act is effective in the first quarter of fiscal 2018. As of April 30, 2018, we have not completed our accounting for the tax effects of the enactment of the 2017 Act. Consistent with SEC guidance, we recorded a provisional tax expense in our financial statements for the first quarter ending January 31, 2018, based on reasonable estimates of the tax effects of the 2017 Act. The provisional tax expense is subject to revisions as we gather and prepare additional information to complete our analysis of the 2017 Act, and interpret additional guidance issued by the FASB, Internal Revenue Service and U.S. Treasury Department. The provisional tax expense will be finalized during the measurement period, which should not extend beyond one year from the enactment date, and could be materially different than our provisional tax expense. The provisional tax expense is described in more detail below. During the first quarter, the Company recorded a $177.9 million provisional tax expense for the mandatory deemed repatriation of deferred foreign earnings and plans to pay the applicable amounts over eight years. The 2017 Act requires us to incur a one-time transition tax on deferred foreign income not previously subject to U.S. income tax at a rate of 15.5% for foreign cash and certain other net current assets, and 8% on the remaining deferred foreign income. We have not completed our analysis of the transition tax because we are still gathering information and analyzing the earnings and profits, and foreign tax credits which are critical inputs to the calculation. Estimates have been used for fiscal 2017 and part of fiscal 2018 because tax returns have not been filed for those years. During the first quarter, the Company recorded a provisional tax expense of $13.2 million to record changes to the deferred taxes resulting from the U.S. federal rate decreasing from 35% to 21%. The amount is calculated using the applicable tax rates in the years in which the deferred tax assets and liabilities are expected to reverse. The Company is still analyzing certain aspects of the 2017 Act and refining the calculations, which could affect the measurement of the deferred taxes or give rise to new deferred tax amounts. The re-measurement of deferred taxes included in our financial statements will be subject to further revisions if our current estimates vary from our actual future operating results. Due to the changes in the 2017 Act, we are reviewing our prior assertion that earnings from our foreign subsidiaries are indefinitely reinvested. For purposes of recording the provisional tax expense in fiscal 2018, we are no longer asserting that earnings from our foreign subsidiaries are indefinitely reinvested. Accordingly, in the first quarter we recorded provisional estimates relating to additional state income taxes of $8.1 million and withholding taxes of $2.8 million relating to the unremitted foreign earnings. We have not completed our analysis because we are still gathering additional information to quantify the impact to the individual states and to quantify the withholding taxes that would be owed when future dividends are paid to the U.S. As the Company completes its analysis appropriate changes will be made to the financial statements within the measurement period. The 2017 Act imposes a new tax on foreign earnings and profits in excess of a deemed return on tangible assets of foreign subsidiaries referred to as GILTI. The 2017 Act also imposes a new tax on certain payments between a U.S. Corporation and its foreign subsidiaries referred to as BEAT. These new provisions are effective for fiscal 2019. Due to the complexity of the new GILTI and BEAT tax rules, we are continuing to evaluate these new provisions and the application of GAAP. With respect to GILTI, the Company has not progressed sufficiently in its analysis and has not made an accounting policy election to treat taxes due on the GILTI inclusion as a current period expense or factor such amounts into the measurement of our deferred taxes. The Company will continue its evaluation and make a policy election within the measurement period. The 2017 Act limits the future deductions relating to interest expense and certain executive compensation. These provisions are generally effective for the Company in fiscal 2019. Pursuant to transition rules provided in the 2017 Act relating to the deduction for executive compensation, companies will be allowed tax deductions for performance based plans in existence on or before November 2, 2017 and not materially modified after that date. Based on our current interpretation of the transition rules, we believe the Company will be able to deduct the executive compensation relating to those plans. Therefore, we have not recorded any provisional tax expense this quarter or prior quarters. As additional guidance, to clarify the transition rules, is provided by the tax authorities we will make appropriate changes within the measurement period. Effective Tax Rate The Company's effective tax rates were a benefit of 12.9% and expense of 4.2% for the second quarters of fiscal 2018 and 2017, respectively, and an expense of 147.8% and 4.7% for the first six months of fiscal 2018 and 2017, respectively. The decrease in our effective tax rate for the second quarter of fiscal 2018 compared to the second quarter of fiscal 2017 was due primarily to a reduction in U.S. income related to acquisition and integration activities in CooperSurgical. The increase in our effective tax rate for the first six months of fiscal 2018 compared to the first six months of fiscal 2017 was primarily due to the charge of $202.0 million related to the 2017 Act. Our effective tax rate for the first six months of fiscal 2018 was higher than the U.S. Statutory rate because of the discrete tax expense relating to the 2017 Act, which was partially offset by a favorable mix of income from our foreign jurisdictions with lower tax rates and an excess tax benefit from share-based compensation. Our effective tax rate for the first six months of fiscal 2017 was lower than the U.S. Statutory rate primarily because of a favorable mix of income from our foreign jurisdictions with lower tax rates and an excess tax benefit from share-based compensation. We recognize the benefit from a tax position only if it is more likely than not that the position would be sustained upon audit based solely on the technical merits of the tax position. As of April 30, 2018 and October 31, 2017, Cooper had unrecognized tax benefits of $63.6 million and $59.9 million respectively. The increase is primarily related to current period transfer pricing. It is our policy to recognize interest and penalties directly related to income taxes as additional income tax expense. It is reasonably possible that $6.1 million of unrecognized tax benefits could be settled during the next twelve months. The Company is subject to United States Federal income tax examinations for fiscal 2015 through 2017 and the Internal Revenue Service has notified the Company that it will audit our U.S. Consolidated Corporation Income Tax Returns for fiscal 2015 and 2016. Cooper remains subject to income tax examinations in other significant tax jurisdictions including the United Kingdom, Japan, France and Australia for the tax years 2013 through 2017. Diverted Profits Tax (DPT) The United Kingdom tax authorities (U.K. Tax Authorities) enacted a Diverted Profits Tax (DPT) as of April 1, 2015 on profits of multinationals that they deemed artificially diverted from the United Kingdom. The tax rate is 25%. DPT is intended to apply in two situations; (a) where a foreign company has artificially avoided having a taxable presence in the United Kingdom and (b) where a group adopts a structure which lacks economic substance in order to divert profits from the United Kingdom. During fiscal 2017, the U.K. Tax Authorities began an inquiry regarding the application of the DPT in fiscal 2015. We believe that the transactions in question were at arm’s length with no intention to divert profit from the United Kingdom and therefore are outside the intended reach of the DPT. On December 20, 2017, the U.K. Tax Authorities issued a DPT charging notice of approximately GBP 31.0 million with respect to the transfer out of the United Kingdom of certain intellectual property rights in connection with the 2014 acquisition of Sauflon Pharmaceutical Ltd. Although taxes were paid on the transfer, the U.K. Tax Authorities are challenging the value assigned to such property. We intend to contest the charging notice vigorously. The process for resolving such a notice can be lengthy and could involve litigation. The DPT legislation provides a one year review period, however, it requires prepayment of the charging notice to be made within 30 days of its issuance. As required, the payment of GBP 31.0 million was made on January 19, 2018. The company continues to cooperate with the U.K. Tax Authorities to resolve this issue. The outcome of this matter cannot be predicted with certainty and may have an adverse impact on our financial condition and results.

Income Taxes

Recent Tax Legislation

The Tax Cuts and Jobs Act (2017 Act) was enacted into law on December 22, 2017 and significantly changes existing U.S. tax law. The 2017 Act adopts a territorial tax system, imposes a mandatory one-time transition tax on earnings of foreign subsidiaries that were previously tax deferred, and reduces the U.S. federal statutory tax rate from 35% to 21%. The reduction in the U.S. federal statutory tax rate is effective on January 1, 2018 which requires the Company to use a blended tax rate for fiscal 2018. Our blended tax rate is 23.34% for fiscal 2018 and is calculated by applying a pro-rated percentage based on the number of days in our fiscal 2018 before and after the January 1, 2018 effective date. For fiscal 2019 and subsequent years, the Company will utilize the enacted U.S. federal statutory tax rate of 21%.

The 2017 Act includes several provisions that are effective for our fiscal 2019: (i) tax on global intangible low-taxed income (GILTI) of foreign subsidiaries, (ii) tax on certain payments between a U.S. Corporation and its foreign subsidiaries referred to as the base erosion and anti-abuse tax (BEAT), (iii) limitation on the tax deduction for interest payments, and (iv) expanded limitation on the tax deduction for compensation paid to certain executives.

The 2017 Act is effective in the first quarter of fiscal 2018. As of April 30, 2018, we have not completed our accounting for the tax effects of the enactment of the 2017 Act. Consistent with SEC guidance, we recorded a provisional tax expense in our financial statements for the first quarter ending January 31, 2018, based on reasonable estimates of the tax effects of the 2017 Act. The provisional tax expense is subject to revisions as we gather and prepare additional information to complete our analysis of the 2017 Act, and interpret additional guidance issued by the FASB, Internal Revenue Service and U.S. Treasury Department. The provisional tax expense will be finalized during the measurement period, which should not extend beyond one year from the enactment date, and could be materially different than our provisional tax expense. The provisional tax expense is described in more detail below.

During the first quarter, the Company recorded a $177.9 million provisional tax expense for the mandatory deemed repatriation of deferred foreign earnings and plans to pay the applicable amounts over eight years. The 2017 Act requires us to incur a one-time transition tax on deferred foreign income not previously subject to U.S. income tax at a rate of 15.5% for foreign cash and certain other net current assets, and 8% on the remaining deferred foreign income. We have not completed our analysis of the transition tax because we are still gathering information and analyzing the earnings and profits, and foreign tax credits which are critical inputs to the calculation. Estimates have been used for fiscal 2017 and part of fiscal 2018 because tax returns have not been filed for those years.

During the first quarter, the Company recorded a provisional tax expense of $13.2 million to record changes to the deferred taxes resulting from the U.S. federal rate decreasing from 35% to 21%. The amount is calculated using the applicable tax rates in the years in which the deferred tax assets and liabilities are expected to reverse. The Company is still analyzing certain aspects of the 2017 Act and refining the calculations, which could affect the measurement of the deferred taxes or give rise to new deferred tax amounts. The re-measurement of deferred taxes included in our financial statements will be subject to further revisions if our current estimates vary from our actual future operating results.

Due to the changes in the 2017 Act, we are reviewing our prior assertion that earnings from our foreign subsidiaries are indefinitely reinvested. For purposes of recording the provisional tax expense in fiscal 2018, we are no longer asserting that earnings from our foreign subsidiaries are indefinitely reinvested. Accordingly, in the first quarter we recorded provisional estimates relating to additional state income taxes of $8.1 million and withholding taxes of $2.8 million relating to the unremitted foreign earnings. We have not completed our analysis because we are still gathering additional information to quantify the impact to the individual states and to quantify the withholding taxes that would be owed when future dividends are paid to the U.S. As the Company completes its analysis appropriate changes will be made to the financial statements within the measurement period.

The 2017 Act imposes a new tax on foreign earnings and profits in excess of a deemed return on tangible assets of foreign subsidiaries referred to as GILTI. The 2017 Act also imposes a new tax on certain payments between a U.S. Corporation and its foreign subsidiaries referred to as BEAT. These new provisions are effective for fiscal 2019. Due to the complexity of the new GILTI and BEAT tax rules, we are continuing to evaluate these new provisions and the application of GAAP. With respect to GILTI, the Company has not progressed sufficiently in its analysis and has not made an accounting policy election to treat taxes due on the GILTI inclusion as a current period expense or factor such amounts into the measurement of our deferred taxes. The Company will continue its evaluation and make a policy election within the measurement period.

The 2017 Act limits the future deductions relating to interest expense and certain executive compensation. These provisions are generally effective for the Company in fiscal 2019. Pursuant to transition rules provided in the 2017 Act relating to the deduction for executive compensation, companies will be allowed tax deductions for performance based plans in existence on or before November 2, 2017 and not materially modified after that date. Based on our current interpretation of the transition rules, we believe the Company will be able to deduct the executive compensation relating to those plans. Therefore, we have not recorded any provisional tax expense this quarter or prior quarters. As additional guidance, to clarify the transition rules, is provided by the tax authorities we will make appropriate changes within the measurement period.

Effective Tax Rate

The Company's effective tax rates were a benefit of 12.9% and expense of 4.2% for the second quarters of fiscal 2018 and 2017, respectively, and an expense of 147.8% and 4.7% for the first six months of fiscal 2018 and 2017, respectively. The decrease in our effective tax rate for the second quarter of fiscal 2018 compared to the second quarter of fiscal 2017 was due primarily to a reduction in U.S. income related to acquisition and integration activities in CooperSurgical. The increase in our effective tax rate for the first six months of fiscal 2018 compared to the first six months of fiscal 2017 was primarily due to the charge of $202.0 million related to the 2017 Act. Our effective tax rate for the first six months of fiscal 2018 was higher than the U.S. Statutory rate because of the discrete tax expense relating to the 2017 Act, which was partially offset by a favorable mix of income from our foreign jurisdictions with lower tax rates and an excess tax benefit from share-based compensation. Our effective tax rate for the first six months of fiscal 2017 was lower than the U.S. Statutory rate primarily because of a favorable mix of income from our foreign jurisdictions with lower tax rates and an excess tax benefit from share-based compensation.

We recognize the benefit from a tax position only if it is more likely than not that the position would be sustained upon audit based solely on the technical merits of the tax position. As of April 30, 2018 and October 31, 2017, Cooper had unrecognized tax benefits of $63.6 million and $59.9 million respectively. The increase is primarily related to current period transfer pricing. It is our policy to recognize interest and penalties directly related to income taxes as additional income tax expense. It is reasonably possible that $6.1 million of unrecognized tax benefits could be settled during the next twelve months.

The Company is subject to United States Federal income tax examinations for fiscal 2015 through 2017 and the Internal Revenue Service has notified the Company that it will audit our U.S. Consolidated Corporation Income Tax Returns for fiscal 2015 and 2016. Cooper remains subject to income tax examinations in other significant tax jurisdictions including the United Kingdom, Japan, France and Australia for the tax years 2013 through 2017.

Diverted Profits Tax (DPT)

The United Kingdom tax authorities (U.K. Tax Authorities) enacted a Diverted Profits Tax (DPT) as of April 1, 2015 on profits of multinationals that they deemed artificially diverted from the United Kingdom. The tax rate is 25%. DPT is intended to apply in two situations; (a) where a foreign company has artificially avoided having a taxable presence in the United Kingdom and (b) where a group adopts a structure which lacks economic substance in order to divert profits from the United Kingdom.

During fiscal 2017, the U.K. Tax Authorities began an inquiry regarding the application of the DPT in fiscal 2015. We believe that the transactions in question were at arm’s length with no intention to divert profit from the United Kingdom and therefore are outside the intended reach of the DPT.

On December 20, 2017, the U.K. Tax Authorities issued a DPT charging notice of approximately GBP 31.0 million with respect to the transfer out of the United Kingdom of certain intellectual property rights in connection with the 2014 acquisition of Sauflon Pharmaceutical Ltd. Although taxes were paid on the transfer, the U.K. Tax Authorities are challenging the value assigned to such property. We intend to contest the charging notice vigorously. The process for resolving such a notice can be lengthy and could involve litigation. The DPT legislation provides a one year review period, however, it requires prepayment of the charging notice to be made within 30 days of its issuance. As required, the payment of GBP 31.0 million was made on January 19, 2018. The company continues to cooperate with the U.K. Tax Authorities to resolve this issue. The outcome of this matter cannot be predicted with certainty and may have an adverse impact on our financial condition and results.