Subsequent Events Subsequent Events (Details) - USD ($) $ in Millions	Apr. 28, 2018	Apr. 23, 2018	Apr. 24, 2018	Apr. 16, 2018	Apr. 05, 2018	Mar. 30, 2018	Dec. 29, 2017	Apr. 30, 2013
Subsequent Event [Line Items]
Long-term Debt, Current Maturities						$ 322.5	$ 314.2
Long-term Debt						6,568.3	6,492.6
Non-Amortizable intangible assets, gross						886.6	612.1
Sucampo [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Payment for License Option Exercised					$ 10.0
3.50% Senior Notes | Unsecured Debt
Subsequent Event [Line Items]
Long-term Debt, Current Maturities						300.0	300.0
3.50% Senior Notes | Unsecured Debt | Subsequent Event [Member]
Subsequent Event [Line Items]
Long-term Debt, Current Maturities				$ 300.0
3.50% Senior Notes | Senior Notes
Subsequent Event [Line Items]
Stated interest rate								3.50%
Receivable securitization, Maturity Date of July 2020 [Member]
Subsequent Event [Line Items]
Long-term Debt						$ 219.6	200.0
Receivable securitization, Maturity Date of July 2020 [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from Lines of Credit		$ 30.4
Long-term Debt		$ 250.0
2017 Revolving Credit Facility [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Long-term Debt			$ 600.0
Repayments of Debt	$ 25.0
Level 1 | 3.50% Senior Notes | Senior Notes
Subsequent Event [Line Items]
Stated interest rate						3.50%
Level 1 | 3.50% Senior Notes | Senior Notes | Subsequent Event [Member]
Subsequent Event [Line Items]
Stated interest rate				3.50%
In-process Research and Development
Subsequent Event [Line Items]
Non-Amortizable intangible assets, gross						$ 851.6	$ 577.1
In-process Research and Development | Stannsoporfin [Member]
Subsequent Event [Line Items]
Non-Amortizable intangible assets, gross						$ 113.5