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Guarantee Of Registered Securities (Condensed Consolidating Statements Of Income) (Details) (USD $)
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3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Guarantor Obligations [Line Items] | ||||
| OPERATING REVENUES | $ 1,203,000,000 | $ 1,130,300,000 | $ 2,332,900,000 | $ 2,170,600,000 |
| Contract drilling (exclusive of depreciation) | 576,000,000 | 527,200,000 | 1,128,600,000 | 1,007,000,000 |
| Asset Impairment Charges | 991,500,000 | 0 | 991,500,000 | 0 |
| Depreciation | 139,400,000 | 132,000,000 | 278,600,000 | 259,900,000 |
| General and administrative | 36,200,000 | 36,400,000 | 74,300,000 | 74,200,000 |
| OPERATING (LOSS) INCOME | (540,100,000) | 434,700,000 | (140,100,000) | 829,500,000 |
| OTHER INCOME (EXPENSE), NET | (30,800,000) | (39,800,000) | (59,900,000) | (69,600,000) |
| (LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES | (570,900,000) | 394,900,000 | (200,000,000) | 759,900,000 |
| INCOME TAX PROVISION | 48,000,000 | 48,500,000 | 100,900,000 | 99,300,000 |
| DISCONTINUED OPERATIONS, NET | (550,700,000) | 16,200,000 | (572,000,000) | 21,900,000 |
| NET INCOME | (1,169,600,000) | 362,600,000 | (872,900,000) | 682,500,000 |
| NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS | (3,100,000) | (1,700,000) | (7,300,000) | (4,500,000) |
| NET INCOME ATTRIBUTABLE TO ENSCO | (1,172,700,000) | 360,900,000 | (880,200,000) | 678,000,000 |
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Ensco Plc [Member]
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| Guarantor Obligations [Line Items] | ||||
| OPERATING REVENUES | 7,800,000 | 5,500,000 | 15,500,000 | 11,000,000 |
| Contract drilling (exclusive of depreciation) | 8,000,000 | 12,800,000 | 15,300,000 | 25,200,000 |
| Depreciation | 100,000 | 100,000 | 200,000 | |
| General and administrative | 14,500,000 | 16,200,000 | 30,800,000 | 33,100,000 |
| OPERATING (LOSS) INCOME | (14,700,000) | (23,600,000) | (30,700,000) | (47,500,000) |
| OTHER INCOME (EXPENSE), NET | (12,000,000) | (15,300,000) | (28,600,000) | (29,900,000) |
| (LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES | (26,700,000) | (38,900,000) | (59,300,000) | (77,400,000) |
| DISCONTINUED OPERATIONS, NET | 0 | |||
| EQUITY EARNINGS IN AFFILIATES, NET OF TAX | (1,146,000,000) | 399,800,000 | (820,900,000) | 755,400,000 |
| NET INCOME | (1,172,700,000) | 360,900,000 | (880,200,000) | 678,000,000 |
| NET INCOME ATTRIBUTABLE TO ENSCO | (1,172,700,000) | 360,900,000 | (880,200,000) | 678,000,000 |
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ENSCO International Inc. [Member]
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| Guarantor Obligations [Line Items] | ||||
| OPERATING REVENUES | 38,900,000 | 38,200,000 | 77,800,000 | 76,300,000 |
| Contract drilling (exclusive of depreciation) | 38,900,000 | 38,200,000 | 77,800,000 | 76,300,000 |
| Depreciation | 1,800,000 | 1,000,000 | 3,300,000 | 1,800,000 |
| General and administrative | 100,000 | 100,000 | 200,000 | 300,000 |
| OPERATING (LOSS) INCOME | (1,900,000) | (1,100,000) | (3,500,000) | (2,100,000) |
| OTHER INCOME (EXPENSE), NET | (1,400,000) | (5,700,000) | (5,400,000) | (13,100,000) |
| (LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES | (3,300,000) | (6,800,000) | (8,900,000) | (15,200,000) |
| INCOME TAX PROVISION | 7,600,000 | 31,200,000 | 38,400,000 | 60,700,000 |
| DISCONTINUED OPERATIONS, NET | 0 | |||
| EQUITY EARNINGS IN AFFILIATES, NET OF TAX | (1,481,500,000) | 78,800,000 | (1,387,500,000) | 190,500,000 |
| NET INCOME | (1,492,400,000) | 40,800,000 | (1,434,800,000) | 114,600,000 |
| NET INCOME ATTRIBUTABLE TO ENSCO | (1,492,400,000) | 40,800,000 | (1,434,800,000) | 114,600,000 |
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Pride International, Inc. [Member]
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| Guarantor Obligations [Line Items] | ||||
| OPERATING REVENUES | 0 | |||
| OTHER INCOME (EXPENSE), NET | (13,700,000) | (16,000,000) | (25,900,000) | (30,600,000) |
| (LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES | (13,700,000) | (16,000,000) | (25,900,000) | (30,600,000) |
| INCOME TAX PROVISION | 0 | 0 | 0 | 0 |
| DISCONTINUED OPERATIONS, NET | 0 | |||
| EQUITY EARNINGS IN AFFILIATES, NET OF TAX | (1,554,500,000) | 77,200,000 | (1,569,800,000) | 129,600,000 |
| NET INCOME | (1,568,200,000) | 61,200,000 | (1,595,700,000) | 99,000,000 |
| NET INCOME ATTRIBUTABLE TO ENSCO | (1,568,200,000) | 61,200,000 | (1,595,700,000) | 99,000,000 |
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Other Non-Guarantor Subsidiaries Of Ensco [Member]
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| Guarantor Obligations [Line Items] | ||||
| OPERATING REVENUES | 1,236,100,000 | 1,164,500,000 | 2,398,900,000 | 2,238,600,000 |
| Contract drilling (exclusive of depreciation) | 608,900,000 | 554,100,000 | 1,194,800,000 | 1,060,800,000 |
| Asset Impairment Charges | 991,500,000 | 991,500,000 | ||
| Depreciation | 137,600,000 | 130,900,000 | 275,200,000 | 257,900,000 |
| General and administrative | 21,600,000 | 20,100,000 | 43,300,000 | 40,800,000 |
| OPERATING (LOSS) INCOME | (523,500,000) | 459,400,000 | (105,900,000) | 879,100,000 |
| OTHER INCOME (EXPENSE), NET | (3,700,000) | (2,800,000) | 0 | 4,000,000 |
| (LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES | (527,200,000) | 456,600,000 | (105,900,000) | 883,100,000 |
| INCOME TAX PROVISION | 40,400,000 | 17,300,000 | 62,500,000 | 38,600,000 |
| DISCONTINUED OPERATIONS, NET | (550,700,000) | 16,200,000 | (572,000,000) | 21,900,000 |
| NET INCOME | (1,118,300,000) | 455,500,000 | (740,400,000) | 866,400,000 |
| NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS | (3,100,000) | (1,700,000) | (7,300,000) | (4,500,000) |
| NET INCOME ATTRIBUTABLE TO ENSCO | (1,121,400,000) | 453,800,000 | (747,700,000) | 861,900,000 |
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Consolidating Adjustments [Member]
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| Guarantor Obligations [Line Items] | ||||
| OPERATING REVENUES | (79,800,000) | (77,900,000) | (159,300,000) | (155,300,000) |
| Contract drilling (exclusive of depreciation) | (79,800,000) | (77,900,000) | (159,300,000) | (155,300,000) |
| DISCONTINUED OPERATIONS, NET | 0 | |||
| EQUITY EARNINGS IN AFFILIATES, NET OF TAX | 4,182,000,000 | (555,800,000) | 3,778,200,000 | (1,075,500,000) |
| NET INCOME | 4,182,000,000 | (555,800,000) | 3,778,200,000 | (1,075,500,000) |
| NET INCOME ATTRIBUTABLE TO ENSCO | $ 4,182,000,000 | $ (555,800,000) | $ 3,778,200,000 | $ (1,075,500,000) |