Collaborations and Other Arrangements (Net Product Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	$ 34,124.1	$ 28,541.4	$ 28,318.4
Jardiance
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	2,744.7	2,066.0	1,490.8
Basaglar
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	728.3	760.4	892.5
Trajenta
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	386.9	383.7	372.5
Olumiant
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	922.6	830.5	1,115.1
Tyvyt®
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	$ 393.4	$ 293.3	$ 418.1