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Segment and Revenue Information - Schedule of Segment, Reconciliation of Other Items from Segments to Consolidated (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Segment Reporting Information [Line Items]        
Share-based plans     $ (381) $ (352)
Research and development expense, net $ (797) $ (698) (1,538) (1,331)
Unallocated items, eliminations and other        
Segment Reporting Information [Line Items]        
Share-based plans 14 (25) (38) (108)
Deferred compensation (42) 124 (96) 166
Amortization of previously capitalized interest (24) (24) (47) (47)
Research and development expense, net (73) (66) (149) (118)
Eliminations and other unallocated items (211) (93) (466) (228)
Unallocated items, eliminations and other $ (336) $ (84) $ (796) $ (335)