Note 3 - Investments - Investments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other investments	$ 64	$ 177
Total investment assets	$ 328	435
Affiliated Companies [Member]
Affiliated companies accounted for by the equity method, percentage	50.00%
Affiliated companies accounted for by the equity method	$ 264	$ 258

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Amount of long-term investments classified as other.

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