Note 11 - Guarantees (Tables)

12 Months Ended

Dec. 31, 2017

Table [Text Block]

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

(in millions)
Deferred revenue on extended warranties as of December 31, 2015	$	27
New extended warranty and maintenance arrangements		172
Recognition of extended warranty and maintenance arrangement    revenue		(175	)
Deferred revenue on extended warranties as of December 31, 2016		24
New extended warranty and maintenance arrangements		127
Recognition of extended warranty and maintenance arrangement    revenue		(128	)
Deferred revenue on extended warranties as of December 31, 2017	$	23