Income Taxes (Schedule of Deferred Taxes Activity) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Deferred tax assets:
Tax loss and credit carryforward	$ 3,600.7	$ 3,646.0
Deferred Tax Assets, Capital Loss Carryforwards	983.5	1,412.6
Deferred Tax Assets, Opioid-related litigation settlement	0.0	111.7
Deferred Tax Assets, Goodwill and Intangible Assets	571.5	278.4
Deferred Tax Asset, Interest Carryforward	95.1	84.0
Other	231.3	159.8
Total deferred tax assets, gross	5,482.1	5,692.5
Deferred tax liabilities:
Investment in partnership	(68.7)	(67.4)
Deferred Tax Liabilities, Other	(28.6)	(157.0)
Total deferred tax liabilities, gross	(97.3)	(224.4)
Net deferred tax asset before valuation allowances	5,384.8	5,468.1
Valuation allowances	(4,583.8)	(4,992.9)
Deferred income tax asset (liability), net	801.0	$ 475.2
Increase (Decrease) Deferred Tax Assets, Capital Tax Loss Carryforwards	434.3
Increase (Decrease) Deferred Tax Assets, Other	$ 110.5