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v3.20.1

Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 456,600,000 | $ 405,900,000 |
Operating Expenses [Abstract] |  |  |
Contract drilling (exclusive of depreciation) | 476,000,000.0 | 332,600,000 |
Asset Impairment Charges | 2,808,200,000 | 0 |
Depreciation expense | 164,500,000 | 125,000,000.0 |
General and administrative | 53,400,000 | 29,600,000 |
Equity in earnings of ARO | 6,300,000 | 0 |
OPERATING LOSS | (3,051,800,000) | (81,300,000) |
Property and equipment, net | 12,157,200,000 | 12,508,900,000 | $ 15,096,900,000
Reconciling Items |  |  |
Operating Expenses [Abstract] |  |  |
Property and equipment, net | (740,600,000) |  |
Operating Segments [Member] | Floaters |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 179,600,000 | 232,700,000 |
Operating Expenses [Abstract] |  |  |
Contract drilling (exclusive of depreciation) | 213,900,000 | 181,800,000 |
Asset Impairment Charges | 2,554,300,000 |  |
Depreciation expense | 89,400,000 | 84,800,000 |
General and administrative | 0 | 0 |
Equity in earnings of ARO | 0 |  |
OPERATING LOSS | (2,678,000,000.0) | (33,900,000) |
Property and equipment, net | 7,442,500,000 | 9,383,600,000 |
Operating Segments [Member] | Jackups |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 212,800,000 | 157,000,000.0 |
Operating Expenses [Abstract] |  |  |
Contract drilling (exclusive of depreciation) | 226,100,000 | 135,400,000 |
Asset Impairment Charges | 253,900,000 |  |
Depreciation expense | 58,500,000 | 36,900,000 |
General and administrative | 0 | 0 |
Equity in earnings of ARO | 0 |  |
OPERATING LOSS | (325,700,000) | (15,300,000) |
Property and equipment, net | 4,036,000,000.0 | 3,091,700,000 |
Operating Segments [Member] | ARO |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 140,300,000 |  |
Operating Expenses [Abstract] |  |  |
Contract drilling (exclusive of depreciation) | 108,300,000 |  |
Asset Impairment Charges | 0 |  |
Depreciation expense | 13,000,000.0 |  |
General and administrative | 8,300,000 |  |
Equity in earnings of ARO | 0 |  |
OPERATING LOSS | 10,700,000 |  |
Property and equipment, net | 740,600,000 |  |
Operating Segments [Member] | Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 64,200,000 | 16,200,000 |
Operating Expenses [Abstract] |  |  |
Contract drilling (exclusive of depreciation) | 36,000,000.0 | 15,400,000 |
Asset Impairment Charges | 0 |  |
Depreciation expense | 11,100,000 | 0 |
General and administrative | 0 | 0 |
Equity in earnings of ARO | 0 |  |
OPERATING LOSS | 17,100,000 | 800,000 |
Property and equipment, net | 678,700,000 | 0 |
Corporate, Non-Segment [Member] | Reconciling Items |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (140,300,000) | 0 |
Operating Expenses [Abstract] |  |  |
Contract drilling (exclusive of depreciation) | (108,300,000) | 0 |
Asset Impairment Charges | 0 |  |
Depreciation expense | (7,500,000) | 3,300,000 |
General and administrative | 45,100,000 | 29,600,000 |
Equity in earnings of ARO | 6,300,000 |  |
OPERATING LOSS | $ (75,900,000) | (32,900,000) |
Property and equipment, net |  | $ 33,600,000 |

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