Collaborations and Other Arrangements (Milestones (Deferred) Capitalized) (Details) - Milestone Payments, Development and Regulatory, Capitalized (Deferred), Cumulative - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Jardiance
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	$ 106.3	$ 116.2
Trajenta
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	51.2	63.5
Basaglar®
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	$ (121.3)	$ (130.6)