Note 9 - Other Charges (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Other Income And Expenses [Abstract]
Change in fair value of the Preferred Stock and Convertible Notes embedded derivatives	[1]	$ 3	$ 1
Other			$ (1)
Total		$ 3

[1] Refer to Note 16, “Financial Instruments