Goodwill and other intangible assets (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization charges associated with finite-lived intangible assets	$ 628	$ 642	$ 1,900	$ 1,900
Total estimated amortization of finite-lived intangible assets for the remainder of the year	600		600
Total estimated amortization of finite-lived intangible assets for year one	2,500		2,500
Total estimated amortization of finite-lived intangible assets for year two	2,400		2,400
Total estimated amortization of finite-lived intangible assets for year three	2,200		2,200
Total estimated amortization of finite-lived intangible assets for year four	1,800		1,800
Total estimated amortization of finite-lived intangible assets for year five	$ 1,800		$ 1,800