Note 1 - Basis of Presentation - Disposal of Assets and Purchase of Property and Equipment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Proceeds from sale of assets	$ 7	$ 0	$ 8	$ 3
Proceeds from FCC - Repack	5	15	19	32
Net book value of assets disposed	(2)	(1)	(4)	(5)
Other	0	0	0	(3)
Total	10	14	23	27
Recurring purchases - operations			51	38
Repack			19	34
Repack related			0	1
Total			$ 70	$ 73