v2.4.0.8
Guarantee Of Registered Securities (Condensed Consolidating Statements Of Cash Flows) (Details) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
OPERATING ACTIVITIES    
Net cash (used in) provided by operating activities of continuing operations $ 989.3 $ 731.3
INVESTING ACTIVITIES    
Additions to property and equipment (631.8) (591.4)
Maturities of short-term investments 50.0 50.0
Payments to Acquire Marketable Securities 33.3 0
Other 2.4 1.5
Net cash provided by (used in) investing activities of continuing operations (612.7) (539.9)
FINANCING ACTIVITIES    
Cash dividends paid (351.2) (233.3)
Reduction of long-term borrowings (23.7) (23.7)
Proceeds from exercise of share options 2.4 22.0
Advances from (to) affiliates   0
Other (15.8) (13.8)
Net cash provided by (used in) financing activities (388.3) (248.8)
DISCONTINUED OPERATIONS    
Operating activities (67.9) 52.6
Investing activities 58.8 8.5
Net cash provided by discontinued operations (9.1) 61.1
Effect of exchange rate changes on cash and cash equivalents 0.2 (1.0)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (20.6) 2.7
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 165.6 487.1
CASH AND CASH EQUIVALENTS, END OF PERIOD 145.0 489.8
Ensco Plc [Member]
    
OPERATING ACTIVITIES    
Net cash (used in) provided by operating activities of continuing operations (34.8) (58.5)
FINANCING ACTIVITIES    
Cash dividends paid (351.2) (233.3)
Proceeds from exercise of share options 2.4 22.0
Advances from (to) affiliates 385.8 301.5
Other (11.6) (12.1)
Net cash provided by (used in) financing activities 25.4 78.1
DISCONTINUED OPERATIONS    
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (9.4) 19.6
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 46.5 271.8
CASH AND CASH EQUIVALENTS, END OF PERIOD 37.1 291.4
ENSCO International Inc. [Member]
    
OPERATING ACTIVITIES    
Net cash (used in) provided by operating activities of continuing operations (25.3) (106.3)
INVESTING ACTIVITIES    
Additions to property and equipment (15.2) 0
Other 0 0.3
Net cash provided by (used in) investing activities of continuing operations (15.2) 0.3
FINANCING ACTIVITIES    
Proceeds from exercise of share options   0
Advances from (to) affiliates 40.0 105.0
Other 0  
Net cash provided by (used in) financing activities 40.0 105.0
DISCONTINUED OPERATIONS    
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (0.5) (1.0)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 0.5 1.7
CASH AND CASH EQUIVALENTS, END OF PERIOD 0 0.7
Pride International, Inc. [Member]
    
OPERATING ACTIVITIES    
Net cash (used in) provided by operating activities of continuing operations (43.6) (47.9)
FINANCING ACTIVITIES    
Advances from (to) affiliates 44.0 8.9
Net cash provided by (used in) financing activities 44.0 8.9
DISCONTINUED OPERATIONS    
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 0.4 (39.0)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 4.9 85.0
CASH AND CASH EQUIVALENTS, END OF PERIOD 5.3 46.0
Other Non-Guarantor Subsidiaries Of Ensco [Member]
    
OPERATING ACTIVITIES    
Net cash (used in) provided by operating activities of continuing operations 1,093.0 944.0
INVESTING ACTIVITIES    
Additions to property and equipment (616.6) (591.4)
Maturities of short-term investments 50.0 50.0
Payments to Acquire Marketable Securities (33.3)  
Other 2.4 1.2
Net cash provided by (used in) investing activities of continuing operations (597.5) (540.2)
FINANCING ACTIVITIES    
Reduction of long-term borrowings (23.7) (23.7)
Advances from (to) affiliates (469.8) (415.4)
Other (4.2) (1.7)
Net cash provided by (used in) financing activities (497.7) (440.8)
DISCONTINUED OPERATIONS    
Operating activities (67.9) 52.6
Investing activities 58.8 8.5
Net cash provided by discontinued operations (9.1) 61.1
Effect of exchange rate changes on cash and cash equivalents 0.2 (1.0)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (11.1) 23.1
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 113.7 128.6
CASH AND CASH EQUIVALENTS, END OF PERIOD $ 102.6 $ 151.7