2.2.0.7 false Income Taxes 11001 - Disclosure - Income Taxes true false false false 1 USD false false Unit12 Standard http://www.xbrl.org/2003/instance pure xbrli 0 Unit1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit13 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Income Taxes 0 esv_IncomeTaxesAbstract esv false na duration INCOME TAXES [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string INCOME TAXES [Abstract] false 3 Income Taxes 1 us-gaap_IncomeTaxDisclosureTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 <div> <div style="width: 800px;"> <div style="text-indent: 0pt; display: block;"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;" align="justify"><font style="display: inline; font-family: Times New Roman; font-size: 11pt; font-weight: bold;" class="_mt">Note 10 – Income Taxes</font></div> <div style="text-indent: 0pt; display: block;"> </div> <div style="text-indent: 0pt; display: block;"> <div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"><font style="display: inline; font-family: Times New Roman; font-size: 11pt;" class="_mt"><font style="letter-spacing: 5pt;" class="_mt">   </font> Subsequent to our redomestication to the U.K. in December 2009, we reorganized our worldwide operations, which included, among other things, the transfer of ownership of several of our drilling rigs among our subsidiaries during the second quarter of 2010.  A $<font class="_mt">22.5</font> million income tax liability associated with the gain on the intercompany transfer was deferred and is being amortized on a straight-line basis over the remaining useful lives of the associated assets that were transferred, which range from five to thirty years. The pre-tax profit of the selling subsidiary resulting from the intercompany transfer was eliminated from our consolidated financial statements. Similarly, the carrying value of the assets in our consolidated financial statements remained at the historical net depreciated cost prior to the intercompany transfer and did not reflect the asset disposal transaction of the selling subsidiary or the asset acquisition transaction of the acquiring subsidiary.</font></div></div></div></div> </div> Note 10 – Income Taxes       Subsequent to our redomestication to the U.K. in December 2009, we reorganized our worldwide false false false us-types:textBlockItemType textblock Description containing the entire income tax disclosure. Examples include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 136, 172 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 44, 45, 46, 47, 48, 49 false 1 2 false UnKnown UnKnown UnKnown false true