Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Accrued Liabilities, Current [Abstract]
Interest on debt	$ 284	$ 268
Employee costs	215	167
Special distribution repayable to Gulfstream (See Note 5 - Investing Activities)	149	0
Deferred income	94	82
Asset retirement obligations	57	40
Other, including other loss contingencies	279	343
Accrued Liabilities, Current	$ 1,078	$ 900