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v3.3.1.900

Goodwill and Other Intangible Assets and Liabilities (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 29, 2016 $ / shares | Dec. 31, 2015 USD ($) $ / shares $ / bbl | Sep. 30, 2015 $ / shares | Dec. 31, 2015 USD ($) $ / shares $ / bbl | Dec. 31, 2014 USD ($) $ / shares $ / bbl | Jan. 31, 2016 $ / bbl | Jun. 30, 2015 $ / shares | Dec. 02, 2014 $ / shares | Sep. 30, 2014 $ / bbl | Dec. 31, 2013 USD ($)
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Expense (Income), Net, Next Twelve Months |  | $ (8.3) |  | $ (8.3) |  |  |  |  |  |
Asset Impairment Charges, Assumptions Used, Weighted Average Capital Cost |  |  |  | 11.50% |  |  |  |  |  |
Price Per Barrel | $ / bbl |  | 35 |  | 35 | 55 |  |  |  | 95 |
Goodwill |  | $ 0.0 |  | $ 0.0 | $ 276.1 |  |  |  |  |
Drilling contract intangible assets, Gross Carrying Amount |  | 209.0 |  | 209.0 | 209.0 |  |  |  |  | $ 209.0
Intangible Assets, Accumulated Amortization [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  | (163.3) | (130.6) |  |  |  |  |
Amortization |  |  |  | (41.4) | (32.7) |  |  |  |  |
Balance, end of period |  | (204.7) |  | (204.7) | (163.3) |  |  |  |  |
Intangible Assets, Net Carrying Amount [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  | 45.7 | 78.4 |  |  |  |  |
Amortization |  |  |  | (41.4) | (32.7) |  |  |  |  |
Balance, end of period |  | 4.3 |  | 4.3 | 45.7 |  |  |  |  |
Drilling contract intangible liabilities, Gross Carrying Amount |  | 278.0 |  | 278.0 | 278.0 |  |  |  |  | 278.0
Intangible Liabilities, Accumulated Amortization [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  | (237.3) | (208.9) |  |  |  |  |
Amortization |  |  |  | (28.1) | (28.4) |  |  |  |  |
Balance, end of period |  | (265.4) |  | (265.4) | (237.3) |  |  |  |  |
Intangible Liabilities, Net Carrying Amount [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of period |  |  |  | 40.7 | 69.1 |  |  |  |  |
Amortization |  |  |  | (28.1) | (28.4) |  |  |  |  |
Balance, end of period |  | 12.6 |  | 12.6 | 40.7 |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
Total |  | $ 8.3 |  | $ 8.3 |  |  |  |  |  |
Share Price | $ / shares |  |  |  |  |  |  |  | $ 25.88 |  |
Average Share Price | $ / shares |  | $ 16.34 | $ 17.21 |  |  |  |  |  |  |
Asset Impairment Charges, Assumptions Used, Terminal Growth Rate |  |  |  | 3.00% |  |  |  |  |  |
Floaters [Member] |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill, Gross |  | $ 3,081.4 |  | $ 3,081.4 | 3,081.4 |  |  |  |  | 3,081.4
Goodwill |  | 0.0 |  | 0.0 | 83.5 |  |  |  |  | 3,081.4
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
Goodwill, Impaired, Accumulated Impairment Loss |  | (3,081.4) |  | (3,081.4) | (2,997.9) |  |  |  |  | 0.0
Goodwill, Impairment Loss |  |  |  | (83.5) | (2,997.9) |  |  |  |  |
Jackups [Member] |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill, Gross |  | 192.6 |  | 192.6 | 192.6 |  |  |  |  | 192.6
Goodwill |  | 0.0 |  | 0.0 | 192.6 |  |  |  |  | 192.6
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
Goodwill, Impaired, Accumulated Impairment Loss |  | $ (192.6) |  | (192.6) | $ 0.0 |  |  |  |  | $ 0.0
Goodwill, Impairment Loss |  |  |  | $ (192.6) |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
Share Price During The Period | $ / shares |  |  |  | $ 13.26 | $ 25.88 |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
Share Price During The Period | $ / shares |  |  |  | $ 22.21 | 41.99 |  |  |  |  |
Weighted Average [Member] |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
Share Price | $ / shares |  |  |  |  | $ 35.23 |  | $ 25.31 |  |  |
Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |
Price Per Barrel | $ / bbl |  |  |  |  |  | 26 |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
Share Price During The Period | $ / shares | $ 8.00 |  |  |  |  |  |  |  |  |

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