Collaborations and Other Arrangements (Net Product Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	$ 8,312.1	$ 6,488.0	$ 15,272.1	$ 14,298.0
Jardiance
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	668.3	461.0	1,245.8	880.4
Basaglar®
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	154.2	174.2	363.5	365.7
Trajenta
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	103.6	97.1	189.5	189.2
Olumiant®
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	$ 218.9	$ 186.2	$ 447.8	$ 441.8