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Guarantee Of Registered Securities Guarantee Of Registered Securities (Condensed Consolidating Statements of Comprehensive Income) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
NET LOSS | $ (140.5) | $ (24.6)
OTHER COMPREHENSIVE INCOME (LOSS), NET: |  |
Net change in fair value of derivatives | 2.7 | 3.1
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income | (2.2) | 0.9
Other | (0.1) | 0.5
NET OTHER COMPREHENSIVE INCOME | 0.4 | 4.5
COMPREHENSIVE LOSS | (140.1) | (20.1)
COMPREHENSIVE (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 0.4 | (1.1)
COMPREHENSIVE LOSS ATTRIBUTABLE TO ENSCO | (139.7) | (21.2)
Ensco Plc [Member] |  |
NET LOSS | (140.1) | (25.7)
OTHER COMPREHENSIVE INCOME (LOSS), NET: |  |
Net change in fair value of derivatives | 0.0 | 0.0
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income | 0.0 | 0.0
Other | 0.0 | 0.0
NET OTHER COMPREHENSIVE INCOME | 0.0 | 0.0
COMPREHENSIVE LOSS | (140.1) | (25.7)
COMPREHENSIVE (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 0.0 | 0.0
COMPREHENSIVE LOSS ATTRIBUTABLE TO ENSCO | (140.1) | (25.7)
ENSCO International Inc. [Member] |  |
NET LOSS | (11.5) | 8.7
OTHER COMPREHENSIVE INCOME (LOSS), NET: |  |
Net change in fair value of derivatives | 2.7 | 3.1
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income | (2.2) | 0.9
Other | 0.0 | 0.0
NET OTHER COMPREHENSIVE INCOME | 0.5 | 4.0
COMPREHENSIVE LOSS | (11.0) | 12.7
COMPREHENSIVE (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 0.0 | 0.0
COMPREHENSIVE LOSS ATTRIBUTABLE TO ENSCO | (11.0) | 12.7
Pride International, Inc. [Member] |  |
NET LOSS | (6.9) | 7.6
OTHER COMPREHENSIVE INCOME (LOSS), NET: |  |
Net change in fair value of derivatives | 0.0 | 0.0
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income | 0.0 | 0.0
Other | 0.0 | 0.0
NET OTHER COMPREHENSIVE INCOME | 0.0 | 0.0
COMPREHENSIVE LOSS | (6.9) | 7.6
COMPREHENSIVE (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 0.0 | 0.0
COMPREHENSIVE LOSS ATTRIBUTABLE TO ENSCO | (6.9) | 7.6
Other Non-Guarantor Subsidiaries Of Ensco [Member] |  |
NET LOSS | (87.6) | 50.4
OTHER COMPREHENSIVE INCOME (LOSS), NET: |  |
Net change in fair value of derivatives | 0.0 | 0.0
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income | 0.0 | 0.0
Other | (0.1) | 0.5
NET OTHER COMPREHENSIVE INCOME | (0.1) | 0.5
COMPREHENSIVE LOSS | (87.7) | 50.9
COMPREHENSIVE (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 0.4 | (1.1)
COMPREHENSIVE LOSS ATTRIBUTABLE TO ENSCO | (87.3) | 49.8
Consolidating Adjustments [Member] |  |
NET LOSS | 105.6 | (65.6)
OTHER COMPREHENSIVE INCOME (LOSS), NET: |  |
Net change in fair value of derivatives | 0.0 | 0.0
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income | 0.0 | 0.0
Other | 0.0 | 0.0
NET OTHER COMPREHENSIVE INCOME | 0.0 | 0.0
COMPREHENSIVE LOSS | 105.6 | (65.6)
COMPREHENSIVE (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 0.0 | 0.0
COMPREHENSIVE LOSS ATTRIBUTABLE TO ENSCO | $ 105.6 | $ (65.6)

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