Other Assets (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($) facility	Dec. 31, 2015 USD ($)
Other Assets [Abstract]
Leases receivable - non-current	$ 0	$ 125
Capitalized repair and maintenance costs	111	149
Pension assets	164	138
Deferred income taxes - non-current	46	47
Miscellaneous	48	49
Total	$ 369	508
Number of facilities with fixed assets constructed on land | facility	2
Leases receivable	$ 131	138
Revolving Credit Facility [Member]
Other Assets [Abstract]
Deferred financing fee	$ 15	$ 19