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Details to the consolidated cash flow statements (Details 1) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement [line items]      
Income taxes paid (refund) $ 2,000 $ 2,300 $ 1,900
Income taxes paid (refund), classified as operating activities $ 1,975 $ 2,342 1,833
Discontinued operations      
Statement [line items]      
Income taxes paid (refund), classified as investing activities     $ 88