Note 4 - Property, Plant and Equipment, Net and Equipment Subject to Operating Leases, Net (Details) - Equipment Subject to Operating Leases - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Equipment Subject to Operating Leases [Abstract]
Equipment subject to operating leases, net	$ 37	$ 25
Accumulated depreciation	(14)	(10)
Equipment subject to operating leases, net	$ 23	$ 15