Note 19 - Segments - Reconciliation of Segment EBITDA to Consolidated Net Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment EBITDA	$ 235	$ 206
Corporate expense and other items, net	(1)	(1)
Depreciation	(88)	(85)
Amortization	(7)	(4)
Non-service cost components of pension and OPEB costs	(2)	(2)
Restructuring charges, net	(1)	(3)
Stock compensation expense	(5)	(4)
Strategic transaction expenses	(3)	(6)
Impairment of goodwill		(51)
Loss on disposal group held for sale	(7)
Other items	4	(3)
Earnings before interest and income taxes	108	47
Interest income	2	2
Interest expense	34	29
Earnings before income taxes	76	20
Income tax expense (benefit)	22	(16)
Equity in earnings of affiliates	14	2
Net income	68	$ 38
Hyliion Inc [Member]
Equity Securities, Unrealized Gain	$ (17)