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Business Restructuring (Tables)
9 Months Ended
Sep. 30, 2021
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
The following table summarizes the reserve activity for the nine months ended September 30, 2021 and 2020:
Total Reserve
($ in millions)20212020
January 1$293 $224 
Approved restructuring actions198 
Release of prior reserves and other adjustments (a)
(23)(26)
Cash payments(60)(98)
Foreign currency impact(14)10 
September 30$198 $308 
(a)Releases of $23 million and $26 million were recorded in the nine months ended September 30, 2021 and 2020, respectively, to reflect the current estimate of the costs to complete these actions.