Note 1 - Basis of Presentation - Property and Equipment (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2021	Dec. 31, 2020
Property and equipment, gross	$ 1,476	$ 1,262
Accumulated depreciation	(568)	(525)
Total property and equipment, net	908	737
Land [Member]
Property and equipment, gross	217	123
Building and Building Improvements [Member]
Property and equipment, gross	$ 332	305
Building and Building Improvements [Member] \| Minimum [Member]
Estimated Useful Lives (Year)	7 years
Building and Building Improvements [Member] \| Maximum [Member]
Estimated Useful Lives (Year)	40 years
Equipment [Member]
Property and equipment, gross	$ 927	$ 834
Equipment [Member] \| Minimum [Member]
Estimated Useful Lives (Year)	3 years
Equipment [Member] \| Maximum [Member]
Estimated Useful Lives (Year)	20 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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