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Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Income Statement [Abstract] |  |
OPERATING REVENUES | $ 417.0 | $ 471.1
OPERATING EXPENSES |  |
Contract drilling (exclusive of depreciation) | 325.2 | 278.1
Depreciation | 115.2 | 109.2
General and administrative | 27.9 | 26.0
Total operating expenses | 468.3 | 413.3
OPERATING INCOME (LOSS) | (51.3) | 57.8
OTHER INCOME (EXPENSE) |  |
Interest income | 3.0 | 7.2
Interest expense, net | (65.6) | (58.6)
Other, net | (8.1) | (6.3)
Other income (expense), net | (70.7) | (57.7)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES | (122.0) | 0.1
PROVISION FOR INCOME TAXES |  |
Current income tax expense | 7.1 | 4.3
Deferred income tax expense | 11.3 | 19.8
Total provision for income taxes | 18.4 | 24.1
LOSS FROM CONTINUING OPERATIONS | (140.4) | (24.0)
LOSS FROM DISCONTINUED OPERATIONS, NET | (0.1) | (0.6)
NET LOSS | (140.5) | (24.6)
NET (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 0.4 | (1.1)
NET LOSS ATTRIBUTABLE TO ENSCO | $ (140.1) | $ (25.7)
EARNINGS (LOSS) PER SHARE - BASIC AND DILUTED |  |
Income (Loss) from Continuing Operations, Per Basic and Diluted Share | $ (0.32) | $ (0.09)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share | 0.00 | 0.00
Loss Per Share, Basic and Diluted | $ (0.32) | $ (0.09)
NET LOSS ATTRIBUTABLE TO ENSCO SHARES - BASIC AND DILUTED | $ (140.2) | $ (25.8)
WEIGHTED-AVERAGE SHARES OUTSTANDING |  |
Weighted Average Number of Shares Outstanding, Basic and Diluted | 433.6 | 300.6
Common Stock, Dividends, Per Share, Cash Paid | $ 0.01 | $ 0.01

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