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Company Restructuring (Tables)
12 Months Ended
Dec. 31, 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(131)
Change in estimated program costs in 202137 (52)
Remaining program charges$16 $6 
Schedule of changes in the restructuring liability
Restructuring activity during the period
($ in millions)Employee costsExit costsTotal liability
Restructuring liability as of December 31, 2020$72 $— $72 
Expense incurred51 144 195 
Adjustments to liability(25)— (25)
Payments and non-cash charges(84)(137)(221)
Restructuring liability as of December 31, 2021$14 $7 $21