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    <Log type="Info">'Monetary' elements on report '0601 - Disclosure - Organization and Significant Accounting Policies (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '06021 - Disclosure - Acquisition of FDR Holdings Limited (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '0605 - Disclosure - Receivables from Customers (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '06061 - Disclosure - Property and Equipment (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '06073 - Disclosure - Debt (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Shares' elements on report '06089 - Disclosure - Equity (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '0610 - Disclosure - Gain on Contract Extinguishments, Net (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '06126 - Disclosure - Income Taxes (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '061313 - Disclosure - Employee Benefit Plans (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '06143 - Disclosure - Derivative Instruments and Hedging Activities (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '0616 - Disclosure - Commitments and Contingencies (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '0620 - Disclosure - Other Financial Information (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '06213 - Disclosure - Information about Subsidiary Company (Details Textual)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '0622 - Disclosure - Subsequent Event (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 0110 - Statement - Consolidated Balance Sheet</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2009'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2008'</Log>
    <Log type="Info">Process Flow-Through: 0111 - Statement - Consolidated Balance Sheet (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 0120 - Statement - Consolidated Statements of Income</Log>
    <Log type="Info">Process Flow-Through: 0130 - Statement - Consolidated Statements of Cash Flows</Log>
    <Log type="Info">Process Flow-Through: 0150 - Statement - Consolidated Statements of Comprehensive Income</Log>
  </Logs>
  <InputFiles>
    <File>ne-20111231.xml</File>
    <File>ne-20111231.xsd</File>
    <File>ne-20111231_cal.xml</File>
    <File>ne-20111231_def.xml</File>
    <File>ne-20111231_lab.xml</File>
    <File>ne-20111231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
