XML 164 R156.htm IDEA: XBRL DOCUMENT v3.23.3
Supplemental information on statement of cash flows (Details 1) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Supplemental Information On Statement Of Cash Flows      
Cash and cash equivalents in statements of financial position $ 7,996 $ 10,467  
Cash and cash equivalents classified as assets held for sale 13  
Cash and cash equivalents according to Statements of Cash Flows (opening balance) 7,996 10,480  
Total cash and cash equivalents 10,351 16,287 $ 7,996
Cash and cash equivalents classified as assets held for sale 7  
Cash and cash equivalents according to Statements of Cash Flows (closing balance) $ 10,351 $ 16,294