v3.20.4
Restructuring Charges - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
program
Dec. 31, 2018
USD ($)
program
Restructuring and Related Activities [Abstract]      
Restructuring and related cost, amount of Program $ 38    
Restructuring programs | program   0 0
Restructuring liability 74 $ 32 $ 65
Restructuring Reserve, Current 60 32  
Restructuring Reserve, Noncurrent $ 14 $ 0