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Supplemental Financial Information (Tables)
 9 Months Ended
Sep. 30, 2021
Supplemental Financial Information  
Schedule of interest expense, net Interest Expense, Net
Three months ended
September 30,		Nine months ended
September 30,
(in millions)2021202020212020
Interest expense$596 $630 $1,843 $1,825 
Interest income(11)(10)(30)(163)
Interest expense, net$585 $620 $1,813 $1,662 
Schedule of inventories Inventories
(in millions)September 30, 2021December 31, 2020
Finished goods$877 $1,318 
Work-in-process1,328 1,201 
Raw materials889 791 
Inventories$3,094 $3,310 
Schedule of property and equipment, net Property and Equipment, Net
(in millions)September 30, 2021December 31, 2020
Property and equipment, gross$10,803 $10,859 
Accumulated depreciation(5,673)(5,611)
Property and equipment, net$5,130 $5,248