Summary of Significant Accounting Policies Policy (Details) $ in Millions		6 Months Ended		12 Months Ended
		Dec. 31, 2015 USD ($) segments	Dec. 27, 2014 USD ($)	Jun. 27, 2015 USD ($)		Jun. 28, 2014 USD ($)	Jun. 29, 2013 USD ($)
Summary of Significant Accounting Policies [Line Items]
Deferred Finance Costs, Net		$ 0.0		$ 40.5		$ 0.0
Variable Interest Entity, Nonexistence Flag		No		No		No	No
Number of Reportable Segments | segments		4
Customer Related Accruals and Allowances		$ 465.6		$ 434.9		$ 318.0
Percent of royalty revenues generated by specific agreement		93.00%
Depreciation		$ 53.8		84.3		77.9	$ 66.2
Land		47.5		48.7		36.1
Buildings and Improvements, Gross		508.2		528.3		430.3
Machinery and Equipment, Gross		1,103.3		1,094.0		1,001.4
Property, Plant and Equipment, Gross		1,659.0		1,671.0		1,467.8
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment		(772.8)		(738.6)		(687.9)
Property, Plant and Equipment, Net	[1]	886.2		932.4		779.9	681.4
Research and development		88.2	$ 89.8	187.8		152.5	115.2
Advertising Expense		$ 77.5		$ 55.7		$ 41.4	$ 26.1
Debt Instrument, Fee		0		90.2
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Current year fiscal period (in weeks)				P52W
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Current year fiscal period (in weeks)				P53W
Machinery and Equipment [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property and equipment, useful life, minimum (in years)		2 years
Machinery and Equipment [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property and equipment, useful life, minimum (in years)		15 years
Building [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property and equipment, useful life, minimum (in years)		10 years
Building [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property and equipment, useful life, minimum (in years)		45 years
Foreign Exchange Forward [Member]
Summary of Significant Accounting Policies [Line Items]
Maximum Remaining Maturity of Foreign Currency Derivatives		15 months		15 months		15 months	15 months
BCH [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Net		$ 123.4		$ 122.5	[2]	$ 0.0	$ 0.0
Omega advertising percentage [Line Items]		88.00%

[1] Amounts may not cross-foot due to rounding.

[2] BCH includes activity subsequent to March 30, 2015.