XML 46 R31.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Goodwill and Other Intangible Assets and Liabilities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes In The Carrying Amount Of Goodwill | The carrying amount of goodwill as of December 31, 2015 is detailed below by reporting unit (in millions):
| December 31, 2015 |  | December 31, 2014
| Gross Carrying Amount |  | Accumulated Impairment Losses |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Impairment Losses |  | Net Carrying Amount
Floaters |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period | $ | 3,081.4 |  |  | $ | (2,997.9 | ) |  | $ | 83.5 |  |  | $ | 3,081.4 |  |  | $ | — |  |  | $ | 3,081.4 |
Loss on impairment | — |  |  | (83.5 | ) |  | (83.5 | ) |  | — |  |  | (2,997.9 | ) |  | (2,997.9 | )
Balance, end of period | $ | 3,081.4 |  |  | $ | (3,081.4 | ) |  | $ | — |  |  | $ | 3,081.4 |  |  | $ | (2,997.9 | ) |  | $ | 83.5 |
Jackups |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period | $ | 192.6 |  |  | $ | — |  |  | $ | 192.6 |  |  | $ | 192.6 |  |  | $ | — |  |  | $ | 192.6 |
Loss on impairment | — |  |  | (192.6 | ) |  | (192.6 | ) |  | — |  |  | — |  |  | — |
Balance, end of period | $ | 192.6 |  |  | $ | (192.6 | ) |  | $ | — |  |  | $ | 192.6 |  |  | $ | — |  |  | $ | 192.6 |
Schedule of Other Intangible Assets and Liabilities | The gross carrying amounts of our drilling contract intangibles, which we consider to be definite-lived intangibles assets and intangible liabilities, and accumulated amortization as of December 31, 2015 and 2014 were as follows (in millions):
| December 31, 2015 |  | December 31, 2014
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Drilling contract intangible assets |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period | $ | 209.0 |  |  | $ | (163.3 | ) |  | $ | 45.7 |  |  | $ | 209.0 |  |  | $ | (130.6 | ) |  | $ | 78.4 |
Amortization | — |  |  | (41.4 | ) |  | (41.4 | ) |  | — |  |  | (32.7 | ) |  | (32.7 | )
Balance, end of period | $ | 209.0 |  |  | $ | (204.7 | ) |  | $ | 4.3 |  |  | $ | 209.0 |  |  | $ | (163.3 | ) |  | $ | 45.7 |
Drilling contract intangible liabilities |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period | $ | 278.0 |  |  | $ | (237.3 | ) |  | $ | 40.7 |  |  | $ | 278.0 |  |  | $ | (208.9 | ) |  | $ | 69.1 |
Amortization | — |  |  | (28.1 | ) |  | (28.1 | ) |  | — |  |  | (28.4 | ) |  | (28.4 | )
Balance, end of period | $ | 278.0 |  |  | $ | (265.4 | ) |  | $ | 12.6 |  |  | $ | 278.0 |  |  | $ | (237.3 | ) |  | $ | 40.7 |
Schedule of Expected Amortization Income (Expense) | We amortize the drilling contract intangibles to operating revenues over the respective remaining drilling contract terms on a straight-line basis. The estimated net increase to future operating revenues related to the amortization of these intangible assets and liabilities as of December 31, 2015, is as follows (in millions):
2016 |  | $ | 8.3 |
Total |  | $ | 8.3 |

X
- Definition Schedule of Other Intangible Assets and Liabilities [Table Text Block] + References No definition available. + Details
Name: | esv_ScheduleOfOtherIntangibleAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | esv_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration