| Component: (Network and Table) | |
|---|---|
| Network | 2416404 - Disclosure - Supplemental Financial Information (Other Current Assets) (Details) (http://www.enscoplc.com/role/SupplementalFinancialInformationOtherCurrentAssetsDetails)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0000314808 (http://www.sec.gov/CIK) | 
| Supplemental Financial Information [Abstract] | Period [Axis] | |
|---|---|---|
2013-12-31  | 2012-12-31  | |
Supplemental Financial Information [Abstract]  | ||
Inventory  | ||
Prepaid taxes  | ||
Short-term investments  | 50,000,000    | 50,000,000    | 
Deferred mobilization costs  | ||
Prepaid expenses  | ||
Derivative assets  | ||
Deferred tax assets  | ||
Assets held for sale  | ||
Marketable securities  | ||
Other  | ||
Other current assets  | 513,900,000    | 425,400,000    |