XML 100 R86.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Schedule II (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015
Allowance for Doubtful Accounts [Member] |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance Beginning of Year |  | $ 8.5 | $ 6.0 | $ 6.0
Additions Charged to Costs and Expenses |  | 2.6 | 2.5 | 1.7
(Deductions) Recoveries/Other | [1] | (0.3) | 0.0 | (1.7)
Balance End of Year |  | 10.8 | 8.5 | 6.0
Deferred Income Tax Charge [Member] |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance Beginning of Year |  | 13.3 | 13.4 | 14.5
Additions Charged to Costs and Expenses | [2] | 45.9 | 0.0 | 0.0
(Deductions) Recoveries/Other |  | (0.1) | (0.1) | (1.1)
Balance End of Year |  | 59.1 | $ 13.3 | $ 13.4
Previously Unrecorded Deferred Assets [Member] | Deferred Income Tax Charge [Member] |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Additions Charged to Costs and Expenses |  | $ 37.8 |  |
[1] | Consists of additions representing allowances and recoveries, less deductions representing receivables written off as uncollectible.
[2] | Addition includes $37.8 million of valuation allowance from prior years as a result of previously unrecorded deferred assets that have been subject to a full valuation allowance.

X
- Definition Valuation allowances and reserves deductions recoveries and other. + References No definition available. + Details
Name: | coo_ValuationAllowancesAndReservesDeductionsRecoveriesAndOther
Namespace Prefix: | coo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_MovementInValuationAllowancesAndReservesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForDoubtfulAccountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_DeferredIncomeTaxChargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowanceByDeferredTaxAssetAxis=coo_PreviouslyUnrecordedDeferredAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |