Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 29, 2019	Mar. 30, 2018	Dec. 28, 2018
Income Taxes [Line Items]
Income tax benefit	$ 204.7	$ 36.6
Increase (decrease) tax benefit	168.1
Increase (Decrease) Tax Benefit, Intercompany Financing Reorganization	192.8
Loss (income) from continuing operations before income taxes	$ 49.5	$ 57.5
Effective tax rate	413.50%	63.70%
Current Income Tax Expense (Benefit)	$ 38.5	$ 11.2
Deferred Income Tax Expense (Benefit)	(243.2)	(47.8)
Deferred Tax Liabilities Installment Sales			$ 227.5
Income Taxes Paid, Net	18.8		12.4
(Loss) income from discontinued operations, net of income taxes	(0.3)	$ 2.9
Unrecognized tax benefits	452.6		287.7
Unrecognized tax benefits, net increase	164.9
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	150.3
Unrecognized tax benefits, net increase related to prior period tax positions	15.5
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	0.9
Unrecognized tax benefits, which if favorably settled would benefit the effective tax rate	440.8
Interest accrued on unrecognized tax benefits	42.3		$ 37.1
Unrecognized tax benefits that would impact effective tax rate, upper bound of change	106.2
Income tax penalties and interest accrued that would impact effective tax rate, upper bound of change	(30.6)
Increase (Decrease) Tax Expense (Benefit), Change in Operating Income	24.7
Discontinued Operations [Member]
Income Taxes [Line Items]
Unrecognized tax benefits, which if favorably settled would benefit the effective tax rate	20.0
Intercompany Financing and Legal Entity Ownership Reorganization [Member]
Income Taxes [Line Items]
Increase (Decrease) in Deferred Tax Liabilities, Other	26.4
Increase (Decrease) Deferred Tax Asset, Tax Loss and Credit Carryforwards	(24.7)
Current Income Tax Expense (Benefit)	28.9
Deferred Income Tax Expense (Benefit)	(221.7)
Increase (decrease), deferred tax assets, excess interest carryforwrds	$ 45.3