Subsequent Events (Details) (Standard Jackup Drilling Unit [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Jan. 17, 2014 Subsequent Event [Member]
Subsequent Event [Line Items]
Sales price		$ 55.4
Inventory and property and equipment, carrying value	$ 21.3

The value of all consideration given or received by the Entity in the significant acquisition or disposal.

No definition available.

Name:	us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant