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Goodwill and other intangible assets (Details Textual) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization charges associated with finite-lived intangible assets $ 693 $ 629 $ 1,400 $ 1,300
Total estimated amortization of finite-lived intangible assets for the remainder of the year 1,400   1,400  
Total estimated amortization of finite-lived intangible assets for year one 2,700   2,700  
Total estimated amortization of finite-lived intangible assets for year two 2,500   2,500  
Total estimated amortization of finite-lived intangible assets for year three 2,100   2,100  
Total estimated amortization of finite-lived intangible assets for year four 2,100   2,100  
Total estimated amortization of finite-lived intangible assets for year five $ 1,100   $ 1,100