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v3.3.1.900

Property And Equipment (Narrative) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2015 USD ($) rigs $ / bbl | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) rigs $ / bbl | Sep. 30, 2014 USD ($) $ / bbl | Jun. 30, 2014 USD ($) rigs | Mar. 31, 2014 USD ($) | Dec. 31, 2015 USD ($) rigs $ / bbl | Dec. 31, 2014 USD ($) rigs $ / bbl | Dec. 31, 2013 USD ($) | Jan. 31, 2016 $ / bbl
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | $ 2,460,300 |  |  |  | $ 517,300 |  |  |  | $ 2,470,300 | $ 1,220,800 |  |
Cost of Services, Depreciation | 149,700 | $ 145,200 | $ 140,500 | $ 137,100 | 139,400 | $ 135,200 | $ 132,200 | $ 131,100 | 572,500 | 537,900 | $ 496,200 |
Assets held for sale | 5,500 |  |  |  | 152,400 |  |  |  | 5,500 | 152,400 |  |
Property and equipment | $ 12,719,400 |  |  |  | $ 14,975,500 |  |  |  | 12,719,400 | 14,975,500 |  |
Impairment of Long Lived Assets |  |  |  |  |  |  |  |  | 2,618,900 | 2,463,100 |  |
Impairment of Long-Lived Assets to be Disposed of |  |  |  |  |  |  |  |  | $ 148,600 | $ 1,242,300 |  |
Number of Rigs Committed to be Sold | rigs | 6 |  |  |  |  |  | 5 |  |  |  |  |
Price Per Barrel | $ / bbl | 35 |  |  |  | 55 | 95 |  |  | 35 | 55 |  |
Asset Impairment Charges | $ 2,744,000 | 2,400 | $ 0 | $ 0 | $ 3,515,200 | $ 0 | $ 703,500 | $ 0 | $ 2,746,400 | $ 4,218,700 | 0 |
Drilling rigs and equipment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Increase in drilling rigs and equipment |  |  |  |  |  |  |  |  | (2,300,000) |  |  |
Property and equipment | 11,001,800 |  |  |  | 13,253,200 |  |  |  | 11,001,800 | 13,253,200 |  |
Work in progress [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment | 1,537,600 |  |  |  | 1,587,300 |  |  |  | 1,537,600 | 1,587,300 |  |
Work in progress [Member] | Jackup Rigs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment | 259,800 |  |  |  | 179,300 |  |  |  | 259,800 | 179,300 |  |
Work in progress [Member] | Ultra Deepwater Drillships [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment | 1,085,200 |  |  |  | 820,100 |  |  |  | 1,085,200 | 820,100 |  |
Work in progress [Member] | Semisubmersible Rigs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment |  |  |  |  | 233,100 |  |  |  |  | 233,100 |  |
Work in progress [Member] | Premium Jackup Rigs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment | 71,100 |  |  |  | 59,200 |  |  |  | 71,100 | $ 59,200 |  |
ENSCO DS-2 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  |  |  |  |  |  | (288,000) |  |  |  |  |
Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | $ 115,800 | $ 25,600 |  |  | $ 407,900 |  | 546,400 |  |  |  |  |
Floaters [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  | $ 991,500 |  |  |  |  |
Impaired Long-Lived Assets Held and Used, Asset Description |  |  |  |  |  |  |  |  |  | 2 |  |
Cost of Services, Depreciation |  |  |  |  |  |  |  |  | $ 382,400 | $ 358,100 | 342,200 |
Number of Rigs Committed to be Sold | rigs |  |  |  |  |  |  |  |  | 3 | 6 |  |
Asset Impairment Charges |  |  |  |  |  |  |  |  | $ 1,778,400 | $ 3,982,300 |  |
Number Of Additional Rigs Committed To Be Sold | rigs |  |  |  |  | 1 |  |  |  |  |  |  |
Jackups [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Impaired Long-Lived Assets Held and Used, Asset Description |  |  |  |  |  |  |  |  |  | 10 |  |
Cost of Services, Depreciation |  |  |  |  |  |  |  |  | $ 175,700 | $ 171,200 | $ 147,500 |
Number of Rigs Committed to be Sold | rigs |  |  |  |  |  |  |  |  | 2 | 2 |  |
Asset Impairment Charges |  |  |  |  |  |  |  |  | $ 968,000 | $ 236,400 |  |
ensco 91 [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  |  |  |  |  |  |  |  | $ 10,000 |  |  |
Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Price Per Barrel | $ / bbl |  |  |  |  |  |  |  |  |  |  |  | 26

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