XML 146 R20.htm IDEA: XBRL DOCUMENT v2.4.0.8
Commitments
6 Months Ended
Jun. 30, 2013
Disclosure Text Block [Abstract]  
Commitments Disclosure [Text Block]
11. Commitments

       In June 2013, the Company entered into a three-year operating lease agreement for a deepwater drillship expected to be delivered mid-2014. The lease obligation totals $464 million, with aggregate future annual minimum lease payments of $104 million in 2014, $154 million in 2015, $155 million in 2016, and $51 million in 2017.