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Goodwill and other intangible assets (Details Textual) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization charges associated with finite-lived intangible assets $ 629 $ 652 $ 1,300 $ 1,300
Total estimated amortization of finite-lived intangible assets for the six months ending December 31, 2022 1,300   1,300  
Total estimated amortization of finite-lived intangible assets for 2023 2,500   2,500  
Total estimated amortization of finite-lived intangible assets for 2024 2,500   2,500  
Total estimated amortization of finite-lived intangible assets for 2025 2,400   2,400  
Total estimated amortization of finite-lived intangible assets for 2026 1,700   1,700  
Total estimated amortization of finite-lived intangible assets for 2027 $ 1,800   $ 1,800