Note 21 - Segments, Geographical Area and Major Customer Information - Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 2,108	$ 1,994	$ 1,078	$ 1,926	$ 1,987	$ 2,164	$ 2,306	$ 2,163	$ 7,106	$ 8,620	$ 8,143
Long-lived assets	2,251				2,265				2,251	2,265	1,850
UNITED STATES
Revenue from Contract with Customer, Excluding Assessed Tax, Total									3,404	4,069	3,613
Long-lived assets	957				972				957	972	860
Other North America [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total									198	404	493
Long-lived assets	106				105				106	105	87
North America [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total									3,602	4,473	4,106
Long-lived assets	1,063				1,077				1,063	1,077	947
ITALY
Revenue from Contract with Customer, Excluding Assessed Tax, Total									993	1,186	971
Long-lived assets	252				248				252	248	138
GERMANY
Revenue from Contract with Customer, Excluding Assessed Tax, Total									429	478	513
Long-lived assets	132				131				132	131	133
Other Europe [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total									787	942	1,000
Long-lived assets	310				265				310	265	241
Europe [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total									2,209	2,606	2,484
Long-lived assets	694				644				694	644	512
South America [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total									358	509	546
Long-lived assets	97				126				97	126	129
CHINA
Revenue from Contract with Customer, Excluding Assessed Tax, Total									379	321	311
Long-lived assets	111				106				111	106	91
Other Asia Pacific [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total									558	711	696
Long-lived assets	286				312				286	312	171
Asia Pacific [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total									937	1,032	1,007
Long-lived assets	$ 397				$ 418				$ 397	$ 418	$ 262