Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic EPS
Net earnings attributable to AbbVie Inc.	$ 1,778	$ 3,949	$ 4,041	$ 9,363
Earnings allocated to participating securities	11	18	32	43
Earnings available to common shareholders	$ 1,767	$ 3,931	$ 4,009	$ 9,320
Weighted-average basic shares outstanding (in shares)	1,767	1,771	1,768	1,771
Basic earnings per share (in dollars per share)	$ 1.00	$ 2.22	$ 2.27	$ 5.26
Diluted EPS
Net earnings attributable to AbbVie Inc.	$ 1,778	$ 3,949	$ 4,041	$ 9,363
Earnings allocated to participating securities	11	18	32	43
Earnings available to common shareholders	$ 1,767	$ 3,931	$ 4,009	$ 9,320
Weighted-average basic shares outstanding (in shares)	1,767	1,771	1,768	1,771
Effect of dilutive securities (in shares)	4	5	4	6
Weighted-average diluted shares outstanding (in shares)	1,771	1,776	1,772	1,777
Diluted earnings per share (in dollars per share)	$ 1.00	$ 2.21	$ 2.26	$ 5.24