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Restructuring (Tables)
12 Months Ended
Dec. 31, 2021
Restructuring and Related Activities [Abstract]  
Charges Related to Restructuring Program Activities by Type of Cost
The following table summarizes the charges related to restructuring program activities by type of cost:
Separation
Costs
Accelerated
Depreciation
OtherTotal
Year Ended December 31, 2021
Cost of sales$ $52 $108 $160 
Selling, general and administrative 12 7 19 
Research and development 27 1 28 
Restructuring costs451  210 661 
 $451 $91 $326 $868 
Year Ended December 31, 2020    
Cost of sales$— $143 $32 $175 
Selling, general and administrative— 44 47 
Research and development— 81 83 
Restructuring costs385 — 190 575 
 $385 $268 $227 $880 
Year Ended December 31, 2019    
Cost of sales$— $198 $53 $251 
Selling, general and administrative— 33 34 
Research and development— 
Restructuring costs572 — 54 626 
 $572 $233 $110 $915 
Charges and Spending Relating to Restructuring Activities by Program
The following table summarizes the charges and spending relating to restructuring program activities:
Separation
Costs
Accelerated
Depreciation
OtherTotal
Restructuring reserves January 1, 2020
$690 $— $25 $715 
Expenses385 268 227 880 
(Payments) receipts, net(508)— (271)(779)
Non-cash activity— (268)38 (230)
Restructuring reserves December 31, 2020
567 — 19 586 
Expenses451 91 326 868 
(Payments) receipts, net(422) (186)(608)
Non-cash activity (91)(118)(209)
Restructuring reserves December 31, 2021 (1)
$596 $ $41 $637 
(1)    The remaining cash outlays are expected to be substantially completed by the end of 2023.