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Subsequent Events (Notes)	6 Months Ended
Subsequent Events (Notes)	Jun. 30, 2016
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Event During the third quarter 2016, we executed an agreement to terminate our Gulf of Mexico deepwater drilling rig contract. As a result, we expect to recognize a termination payment of $113 million in other operating expense in that quarter.