XML 102 R81.htm IDEA: XBRL DOCUMENT v3.20.4
Goodwill and other intangible assets - Goodwill Roll Forward (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]    
Beginning balance $ 14,703 $ 14,699
Addition from acquisitions 0 26
Currency translation adjustments (14) (22)
Ending balance $ 14,689 $ 14,703