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Note 1 - Summary of Impact of Adoption on Consolidated Statement of Operations and Consolidated Statement of Financial Position (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenues
Total revenues	$ 366	$ 379	$ 1,095	$ 1,117
Net income (loss)	19	(46)	(2)	(35)
Liabilities
Other current liabilities	216		216			$ 217
Other long-term liabilities	183		183			202
Equity (Deficit)
Accumulated deficit	(187)		(187)			(174)
Balances without Adoption of ASU 2014-09 [Member]
Liabilities
Other current liabilities						217
Other long-term liabilities						202
Equity (Deficit)
Accumulated deficit						$ (174)
Product [Member]
Revenues
Total revenues	293	303	878	893
Service [Member]
Revenues
Total revenues	73	$ 76	217	$ 224
ASU 2014-09 [Member]
Liabilities
Other current liabilities					$ 219
Other long-term liabilities					210
Equity (Deficit)
Accumulated deficit					(184)
ASU 2014-09 [Member] \| Balances without Adoption of ASU 2014-09 [Member]
Revenues
Total revenues	365		1,092
Net income (loss)	18		(5)
Liabilities
Other current liabilities	214		214
Other long-term liabilities	178		178
Equity (Deficit)
Accumulated deficit	(180)		(180)
ASU 2014-09 [Member] \| Effect of Change Higher (Lower) [Member]
Revenues
Total revenues	1		3
Net income (loss)	1		3
Liabilities
Other current liabilities	2		2		2
Other long-term liabilities	5		5		8
Equity (Deficit)
Accumulated deficit	(7)		(7)		$ (10)
ASU 2014-09 [Member] \| Product [Member] \| Balances without Adoption of ASU 2014-09 [Member]
Revenues
Total revenues	292		875
ASU 2014-09 [Member] \| Product [Member] \| Effect of Change Higher (Lower) [Member]
Revenues
Total revenues	1		3
ASU 2014-09 [Member] \| Service [Member] \| Balances without Adoption of ASU 2014-09 [Member]
Revenues
Total revenues	$ 73		$ 217