XML 66 R54.htm IDEA: XBRL DOCUMENT v3.21.2
Acquisitions (Scientific Management Associates) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 06, 2020
Mar. 31, 2021
Jun. 30, 2021
Dec. 31, 2020
Business Acquisition [Line Items]        
Goodwill     $ 1,763 $ 1,761
SMA        
Business Acquisition [Line Items]        
Purchase price of acquisition $ 13      
Hold-backs to be settled and other adjustments 4      
Cash consideration paid 9      
Goodwill $ 12      
Payment of contingent consideration liability   $ 1