Goodwill and Other Intangible Assets (Product Rights and License by Therapeutic Category) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	$ 18,861.7	$ 22,566.9
Product rights and licenses
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	18,861.0	22,565.9
Product rights and licenses | Developed Markets
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	9,431.6	12,211.1
Product rights and licenses | Greater China
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	5,216.5	5,642.9
Product rights and licenses | JANZ
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	1,177.2	1,325.5
Product rights and licenses | Emerging Markets
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	3,035.7	3,386.4
Product rights and licenses | Brands
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	16,747.1	18,578.3
Product rights and licenses | Brands | Developed Markets
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	7,723.4	8,762.2
Product rights and licenses | Brands | Greater China
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	5,206.8	5,632.3
Product rights and licenses | Brands | JANZ
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	961.0	1,061.3
Product rights and licenses | Brands | Emerging Markets
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	2,855.9	3,122.5
Product rights and licenses | Generics
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	2,113.9	3,987.6
Product rights and licenses | Generics | Developed Markets
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	1,708.2	3,448.9
Product rights and licenses | Generics | Greater China
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	9.7	10.6
Product rights and licenses | Generics | JANZ
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	216.2	264.2
Product rights and licenses | Generics | Emerging Markets
Schedule of Product Rights and Licenses by Therapeutic Class [Line Items]
Finite-lived intangible assets, net	$ 179.8	$ 263.9