Note 9 - Stock Compensation - Granted Awards Activity (Details) shares in Millions	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Restricted Stock Units (RSUs) [Member]
Granted (in shares) | shares	0.9
Grant Date Fair Value (in dollars per share) | $ / shares	$ 22.36	[1]
Performance Share Units [Member]
Granted (in shares) | shares	0.3
Grant Date Fair Value (in dollars per share) | $ / shares	$ 24.69	[1]

[1] Weighted-average per share