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Company Restructuring (Tables)
9 Months Ended
Sep. 30, 2021
Restructuring and Related Activities [Abstract]  
Schedule of restructuring programs
Restructuring programs
($ in millions)Future work environmentTransformative Growth
Expected program charges $110 $290 
2020 expenses— (238)
2021 expenses(108)
Change in estimated program costs in 202130 (52)
Remaining program charges$32 $7 
Schedule of changes in the restructuring liability
Restructuring activity during the period
($ in millions)
Employee
costs
Exit
costs
Total
liability
Restructuring liability as of December 31, 2020$72 $— $72 
Expense incurred
50 120 170 
Adjustments to liability(25)— (25)
Payments and non-cash charges(51)(112)(163)
Restructuring liability as of September 30, 2021$46 $8 $54