Note 21 - Segments, Geographical Area and Major Customer Information - Reconciliation of Segment Net Assets to Consolidated Total Assets (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Segment net assets	$ 4,094	$ 4,121
Accounts payable and other current liabilities	1,863	1,769
Other current and long-term assets	1,419	1,330
Total assets	$ 7,376	$ 7,220