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Revenue from Contracts with Customers - Schedule of Sales Reserves and Allowances (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Revenue Recognition [Line Items]    
Balance at beginning of period $ 3,817 $ 4,309
Provisions related to sales made in current year period 12,975 13,278
Provisions related to sales made in prior periods (101) (202)
Credits and payments (13,125) (13,513)
Translation differences 30 (55)
Balance at end of period 3,596 3,817
Reserves Included in Accounts Receivable, net [Member]    
Revenue Recognition [Line Items]    
Balance at beginning of period 67 68
Provisions related to sales made in current year period 354 363
Provisions related to sales made in prior periods 0 0
Credits and payments (360) (364)
Translation differences 0 0
Balance at end of period 61 67
Rebates [Member]    
Revenue Recognition [Line Items]    
Balance at beginning of period 1,575 1,655
Provisions related to sales made in current year period 4,015 3,823
Provisions related to sales made in prior periods (31) (69)
Credits and payments (3,974) (3,798)
Translation differences 18 (36)
Balance at end of period 1,603 1,575
Medicaid and other governmental allowances [Member]    
Revenue Recognition [Line Items]    
Balance at beginning of period 663 854
Provisions related to sales made in current year period 654 871
Provisions related to sales made in prior periods (33) (35)
Credits and payments (748) (1,023)
Translation differences 4 (4)
Balance at end of period 540 663
Chargebacks [Member]    
Revenue Recognition [Line Items]    
Balance at beginning of period 991 1,085
Provisions related to sales made in current year period 7,579 7,819
Provisions related to sales made in prior periods (54) (44)
Credits and payments (7,662) (7,861)
Translation differences 5 (8)
Balance at end of period 859 991
Returns [Member]    
Revenue Recognition [Line Items]    
Balance at beginning of period 455 535
Provisions related to sales made in current year period 264 317
Provisions related to sales made in prior periods 17 (3)
Credits and payments (304) (390)
Translation differences 4 (4)
Balance at end of period 436 455
Other [Member]    
Revenue Recognition [Line Items]    
Balance at beginning of period 66 112
Provisions related to sales made in current year period 109 85
Provisions related to sales made in prior periods 0 (51)
Credits and payments (77) (77)
Translation differences (1) (3)
Balance at end of period 97 66
Total reserves included in sales reserves and allowances [Member]    
Revenue Recognition [Line Items]    
Balance at beginning of period 3,750 4,241
Provisions related to sales made in current year period 12,621 12,915
Provisions related to sales made in prior periods (101) (202)
Credits and payments (12,765) (13,149)
Translation differences 30 (55)
Balance at end of period $ 3,535 $ 3,750