Note 4 - Revenue (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Contract with Customer, Liability, Total	$ 1,300	$ 1,300
Increase (Decrease) in Contract with Customer, Liability	198	216
Contract with Customer, Liability, Noncurrent	1,137	1,072
Contract with Customer, Liability, Current	132	223
Contract With Customer Liability, Deferred Revenue, Noncurrent	725	764
Contract With Customer Liability, Deferred Revenue, Current	144	148
HSG [Member]
Contract with Customer, Liability, Total	869	912
Contract With Customer Liability, Deferred Revenue, Noncurrent	725	764
Contract With Customer Liability, Deferred Revenue, Current	$ 144	$ 148
Maximum [Member]
Long Term Supply, Commitment Period (Year)	10 years