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Guarantee Of Registered Securities (Condensed Consolidating Statements Of Cash Flows) (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
OPERATING ACTIVITIES |  |
Net cash (used in) provided by operating activities of continuing operations | $ 130.5 | $ 800.2
INVESTING ACTIVITIES |  |
Purchases of short-term investments | (1,134.8) | (862.0)
Maturities of short-term investments | 897.0 | 1,032.0
Additions to property and equipment | (332.6) | (209.4)
Purchase of affiliate debt | 0.0 | 0.0
Other | 1.7 | 7.6
Net cash used in investing activities of continuing operations | (568.7) | (31.8)
FINANCING ACTIVITIES |  |
Proceeds from Issuance of Senior Long-term Debt |  | 585.5
Reduction of long-term borrowings | (537.0) | (684.8)
Cash dividends paid | (6.2) | (5.5)
Debt financing costs | (5.5) | 0.0
Advances from (to) affiliates | 0.0 | 0.0
Other | (3.6) | (1.9)
Net cash used in financing activities | (552.3) | (106.7)
Net cash (used in) provided by discontinued operations | (0.2) | 7.7
Effect of exchange rate changes on cash and cash equivalents | 0.6 | (0.4)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (990.1) | 669.0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 1,159.7 | 121.3
CASH AND CASH EQUIVALENTS, END OF PERIOD | 169.6 | 790.3
Ensco Plc [Member] |  |
OPERATING ACTIVITIES |  |
Net cash (used in) provided by operating activities of continuing operations | (17.8) | (83.4)
INVESTING ACTIVITIES |  |
Purchases of short-term investments | (563.0) | (862.0)
Maturities of short-term investments | 65.1 | 1,032.0
Additions to property and equipment | 0.0 | 0.0
Purchase of affiliate debt | (316.3) | (142.0)
Other | 0.0 | 0.0
Net cash used in investing activities of continuing operations | (814.2) | 28.0
FINANCING ACTIVITIES |  |
Proceeds from Issuance of Senior Long-term Debt |  | 585.5
Reduction of long-term borrowings | (220.7) | (542.8)
Cash dividends paid | (6.2) | (5.5)
Debt financing costs | (5.5) |
Advances from (to) affiliates | 247.7 | 638.9
Other | (2.6) | (1.9)
Net cash used in financing activities | 12.7 | 674.2
Net cash (used in) provided by discontinued operations | 0.0 | 0.0
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (819.3) | 618.8
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 892.6 | 94.0
CASH AND CASH EQUIVALENTS, END OF PERIOD | 73.3 | 712.8
ENSCO International Inc. [Member] |  |
OPERATING ACTIVITIES |  |
Net cash (used in) provided by operating activities of continuing operations | (50.5) | 130.8
INVESTING ACTIVITIES |  |
Purchases of short-term investments | 0.0 | 0.0
Maturities of short-term investments | 0.0 | 0.0
Additions to property and equipment | 0.0 | 0.0
Purchase of affiliate debt | 0.0 | 0.0
Other | 0.0 | 0.0
Net cash used in investing activities of continuing operations | 0.0 | 0.0
FINANCING ACTIVITIES |  |
Proceeds from Issuance of Senior Long-term Debt |  | 0.0
Reduction of long-term borrowings | 0.0 | 0.0
Cash dividends paid | 0.0 | 0.0
Debt financing costs | 0.0 |
Advances from (to) affiliates | 50.5 |
Payments for Advance to Affiliate |  | (130.8)
Other | 0.0 | 0.0
Net cash used in financing activities | 50.5 | (130.8)
Net cash (used in) provided by discontinued operations | 0.0 | 0.0
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | 0.0 | 0.0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 0.0 | 0.0
CASH AND CASH EQUIVALENTS, END OF PERIOD | 0.0 | 0.0
Pride International, Inc. [Member] |  |
OPERATING ACTIVITIES |  |
Net cash (used in) provided by operating activities of continuing operations | (53.9) | (60.4)
INVESTING ACTIVITIES |  |
Purchases of short-term investments | 0.0 | 0.0
Maturities of short-term investments | 0.0 | 0.0
Additions to property and equipment | 0.0 | 0.0
Purchase of affiliate debt | 0.0 | 0.0
Other | 0.0 | 0.0
Net cash used in investing activities of continuing operations | 0.0 | 0.0
FINANCING ACTIVITIES |  |
Proceeds from Issuance of Senior Long-term Debt |  | 0.0
Reduction of long-term borrowings | 0.0 | 0.0
Cash dividends paid | 0.0 | 0.0
Debt financing costs | 0.0 |
Advances from (to) affiliates | 37.9 | 84.5
Other | 0.0 | 0.0
Net cash used in financing activities | 37.9 | 84.5
Net cash (used in) provided by discontinued operations | 0.0 | 0.0
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (16.0) | 24.1
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 19.8 | 2.0
CASH AND CASH EQUIVALENTS, END OF PERIOD | 3.8 | 26.1
Other Non-Guarantor Subsidiaries Of Ensco [Member] |  |
OPERATING ACTIVITIES |  |
Net cash (used in) provided by operating activities of continuing operations | 252.7 | 813.2
INVESTING ACTIVITIES |  |
Purchases of short-term investments | (571.8) | 0.0
Maturities of short-term investments | 831.9 | 0.0
Additions to property and equipment | (332.6) | (209.4)
Purchase of affiliate debt | 0.0 | 0.0
Other | 1.7 | 7.6
Net cash used in investing activities of continuing operations | (70.8) | (201.8)
FINANCING ACTIVITIES |  |
Proceeds from Issuance of Senior Long-term Debt |  | 0.0
Reduction of long-term borrowings | 0.0 | 0.0
Cash dividends paid | 0.0 | 0.0
Debt financing costs | 0.0 |
Payments for Advance to Affiliate | (336.1) | (592.6)
Other | (1.0) | 0.0
Net cash used in financing activities | (337.1) | (592.6)
Net cash (used in) provided by discontinued operations | (0.2) | 7.7
Effect of exchange rate changes on cash and cash equivalents | 0.6 | (0.4)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (154.8) | 26.1
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 247.3 | 25.3
CASH AND CASH EQUIVALENTS, END OF PERIOD | 92.5 | 51.4
Consolidating Adjustments [Member] |  |
OPERATING ACTIVITIES |  |
Net cash (used in) provided by operating activities of continuing operations | 0.0 | 0.0
INVESTING ACTIVITIES |  |
Purchases of short-term investments | 0.0 | 0.0
Maturities of short-term investments | 0.0 | 0.0
Additions to property and equipment | 0.0 | 0.0
Purchase of affiliate debt | 316.3 | 142.0
Other | 0.0 | 0.0
Net cash used in investing activities of continuing operations | 316.3 | 142.0
FINANCING ACTIVITIES |  |
Proceeds from Issuance of Senior Long-term Debt |  | 0.0
Reduction of long-term borrowings | (316.3) | (142.0)
Cash dividends paid | 0.0 | 0.0
Debt financing costs | 0.0 |
Advances from (to) affiliates | 0.0 | 0.0
Other | 0.0 | 0.0
Net cash used in financing activities | (316.3) | (142.0)
Net cash (used in) provided by discontinued operations | 0.0 | 0.0
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | 0.0 | 0.0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 0.0 | 0.0
CASH AND CASH EQUIVALENTS, END OF PERIOD | $ 0.0 | $ 0.0

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