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Restructuring (Tables)
3 Months Ended
Mar. 31, 2021
Restructuring and Related Activities [Abstract]  
Charges Related to Restructuring Program Activities by Type of Cost
The following tables summarize the charges related to restructuring program activities by type of cost:
 Three Months Ended March 31, 2021
($ in millions)Separation
Costs
Accelerated
Depreciation
OtherTotal
Cost of sales$— $10 $17 $27 
Selling, general and administrative— — 
Research and development— — 
Restructuring costs229 — 69 298 
$229 $20 $86 $335 
 Three Months Ended March 31, 2020
($ in millions)Separation
Costs
Accelerated
Depreciation
OtherTotal
Cost of sales$— $25 $43 $68 
Selling, general and administrative— 11 — 11 
Research and development— 17 — 17 
Restructuring costs47 — 25 72 
$47 $53 $68 $168 
Charges and Spending Relating to Restructuring Activities by Program
The following table summarizes the charges and spending relating to restructuring program activities for the three months ended March 31, 2021:
($ in millions)Separation
Costs
Accelerated
Depreciation
OtherTotal
Restructuring reserves January 1, 2021
$567 $— $36 $603 
Expense229 20 86 335 
(Payments) receipts, net(155)— (72)(227)
Non-cash activity— (20)22 
Restructuring reserves March 31, 2021 (1)
$641 $— $72 $713 
(1)The remaining cash outlays are expected to be substantially completed by the end of 2023.