Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of the effect of a change in accounting principle on basic earnings per share.

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Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
	Mar. 14, 2014	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018	Dec. 28, 2018
Goodwill
Non-restructuring impairment charge		$ 113.5	$ 0.0	$ 113.5	$ 0.0
Amortization of Intangible Assets		216.6	184.3	439.4	362.3
Indefinite-lived Intangible Assets (Excluding Goodwill)		$ 554.8		$ 554.8		$ 668.3
Ofirmev
Goodwill
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share		$ 0.36		$ 0.78
Amortization of Intangible Assets [Member] \| Ofirmev
Goodwill
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results		$ 29.8		$ 65.7
InfaCare [Member] \| Stannsoporfin [Member]
Goodwill
Non-restructuring impairment charge		113.5
Sucampo [Member]
Goodwill
Amortization of Intangible Assets			$ 17.9		$ 27.0
Sucampo [Member] \| VTS-270 [Member]
Goodwill
Indefinite-lived Intangible Assets (Excluding Goodwill)		$ 274.5		$ 274.5
Cadence Pharmaceuticals, Inc. [Member] \| Ofirmev
Goodwill
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years