Inventories (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
LIFO Method Related Items [Abstract]
Inventory, LIFO reserve	$ 1	$ 1	$ 38
LIFO Inventory Amount	150	150	227
Disposal Group, Including Discontinued Operation, Inventory, Current	563	563
Inventory Write-down	64	410
Inventory, Net [Abstract]
Finished products and parts	1,965	1,965	2,606
Raw materials and supplies	584	584	754
Work in process	143	143	211
Inventory, net	2,692	2,692	3,571
Obsolescence reserves	$ 199	$ 199	$ 161