Note 1 - Basis of Presentation - Disposal of Assets and Purchase of Property and Equipment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Proceeds from sale of assets	$ 0	$ 1	$ 1	$ 3
Proceeds from FCC - Repack	8	5	14	17
Net book value of assets disposed	(1)	(2)	(2)	(4)
Other	0	(1)	0	(3)
Total	7	3	13	13
Recurring purchases - operations			37	14
Repack			14	30
Total			$ 51	$ 44