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v3.22.0.1

Equity Method Investment in ARO Equity Method Investment In ARO - Summarized Financial Data (Details) - USD ($) $ in Millions | 4 Months Ended | 8 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Assets [Abstract] |  |  |  |  |  |
Cash and cash equivalents | $ 607.6 | $ 608.7 |  | $ 608.7 | $ 325.8 |
Other | 90.5 | 117.8 |  | 117.8 | 386.5 |
TOTAL ASSETS | 2,595.6 | 2,609.2 |  | 2,609.2 | 12,873.2 |
Total current assets | 1,212.4 | 1,206.6 |  | 1,206.6 | 1,172.9 |
Liabilities [Abstract] |  |  |  |  |  |
Liabilities, Current | 390.6 | 422.0 |  | 422.0 | 426.8 |
Investment Owned, Balance [Abstract] |  |  |  |  |  |
EQUITY IN EARNINGS (LOSSES) OF ARO | 3.1 | 6.1 |  |  | (7.8) | $ (12.6)
Related Party Transactions [Abstract] |  |  |  |  |  |
Accounts payable |  | 49.1 |  | 49.1 | 30.9 |
ARO |  |  |  |  |  |
Related Party Transactions [Abstract] |  |  |  |  |  |
Lease revenue | 21.7 | 35.4 | $ 58.2 |  | 52.2 |
Secondment revenue | 1.1 | 1.5 | 49.9 |  | 21.6 |
Transition Services revenue | 0.0 | 0.0 | 17.3 |  | 1.3 |
Total revenue from ARO (1) | 22.8 | 36.9 | 125.4 |  | 75.1 |
ARO |  |  |  |  |  |
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] |  |  |  |  |  |
Equity Method Investment Summarized Fin Information Revenue |  |  | 410.5 | 470.6 | 549.4 |
Equity Method Investment Summarized Financial Information Contract Drilling |  |  | 280.2 | 362.3 | 388.2 |
Equity Method Investment Summarized Financial Information Depreciation |  |  | 40.3 | 65.2 | 54.8 |
Equity Method Investment Summarized Financial Information General And Administrative Expense |  |  | 27.1 | 17.8 | 24.2 |
Equity Method Investment Summarized Financial Information Operating Income |  |  | 62.9 | 25.3 | 82.2 |
Equity Method Investment Summarized Financial Information Other Expense, Net |  |  | 28.6 | 13.4 | 26.7 |
Equity Method Investment Summarized Financial Information Provision For Income Taxes |  |  | 9.7 | 7.9 | 14.2 |
Equity Method Investment Summarized Fin Information Net Income Loss |  |  | 24.6 | 4.0 | 41.3 |
Assets [Abstract] |  |  |  |  |  |
Cash and cash equivalents |  | 270.8 |  | 270.8 | 237.7 |
Other |  | 135.0 |  | 135.0 | 120.9 |
Assets, Noncurrent |  | 775.8 |  | 775.8 | 804.0 |
TOTAL ASSETS |  | 1,181.6 |  | 1,181.6 | 1,162.6 |
Liabilities [Abstract] |  |  |  |  |  |
Liabilities, Current |  | 79.9 |  | 79.9 | 70.8 |
Liabilities, Noncurrent |  | 956.7 |  | 956.7 | 950.8 |
Liabilities |  | 1,036.6 |  | 1,036.6 | 1,021.6 |
ARO |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |
Total current assets |  | 348.1 |  | 348.1 | 585.2 |
Liabilities [Abstract] |  |  |  |  |  |
Maximum exposure to loss |  | 299.0 |  | 299.0 | 554.3 |
Investment Owned, Balance [Abstract] |  |  |  |  |  |
50% interest in ARO net income (loss) | 6.0 | (4.0) | 12.3 |  | 20.7 |
Amortization of basis differences | (2.9) | 10.1 | (24.9) |  | (28.5) |
EQUITY IN EARNINGS (LOSSES) OF ARO | $ 3.1 | 6.1 | $ (12.6) |  | (7.8) |
Related Party Transactions [Abstract] |  |  |  |  |  |
Accounts payable |  | $ 10.8 |  | $ 10.8 | $ 38.3 |

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