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Revenues - Customer Concentration, Product Sales (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
customer
Dec. 31, 2021
USD ($)
customer
Dec. 31, 2020
USD ($)
customer
Revenue, Major Customer [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax $ 26,323 $ 25,979 $ 25,424
Number of major customers (as defined) accounting for more than 10% of total revenue | customer 3 3 3
Major customers (as defined) accounting for more than 10% of gross trade receivables | customer 3 3  
Product [Member]      
Revenue, Major Customer [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax $ 24,801 $ 24,297 $ 24,240
Product [Member] | AmerisourceBergen Corporation [Member]      
Revenue, Major Customer [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax $ 15,443 $ 14,783 $ 14,743
Gross product sales to major customer (as defined) as a percentage of total gross revenues 31.00% 32.00% 34.00%
Product [Member] | McKesson Corporation [Member]      
Revenue, Major Customer [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax $ 17,305 $ 15,187 $ 13,779
Gross product sales to major customer (as defined) as a percentage of total gross revenues 35.00% 33.00% 32.00%
Product [Member] | Cardinal Health, Inc. [Member]      
Revenue, Major Customer [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax $ 8,319 $ 7,681 $ 7,332
Gross product sales to major customer (as defined) as a percentage of total gross revenues 16.00% 17.00% 17.00%