Income Tax Tax (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended			6 Months Ended
	Mar. 31, 2014	Dec. 29, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 29, 2012	Dec. 29, 2012
Pre-tax income
Domestic			$ 736.2	$ 809.7	$ 712.8
Foreign			(149.9)	(155.2)	(120.7)
Income (loss) from continuing operations before income taxes			586.3	654.5	592.1
Current:
Federal			78.4	39.1	45.5
State			12.9	11.8	8.3
Foreign			(22.5)	50.7	28.2
Total current tax expense (benefit)			68.8	101.6	82.0
Deferred:
Federal			27.6	59.6	47.9
State			2.0	5.1	6.3
Foreign			(29.4)	(82.3)	18.3
Total deferred tax expense (benefit)			0.2	(17.6)	72.5
Total income tax expense (benefit) from continuing operations			69.0	84.0	154.5
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate			35.00%	35.00%	35.00%
Income Tax Expense (Benefit), Litigation Settlement	(18.5)		(34.9)
State income taxes, net of federal benefits			2.50%	1.30%	1.40%
Effect of foreign tax rates			(24.30%)	(27.40%)	(24.50%)
Effect of foreign tax law and rate changes			0.00%	0.50%	6.80%
Effect of unrecognized tax benefits			(3.90%)	3.30%	(0.70%)
Change in valuation allowance			0.40%	(1.50%)	6.00%
Other, net			2.10%	1.60%	2.10%
Effective tax rate			11.80%	12.80%	26.10%
Increase in deferred tax liability		38.3
MONTENEGRO
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate			9.00%
Europe
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate			21.00%
Canada [Member] [Domain]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate			26.00%
Serbia
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate			15.00%			10.00%
Advanced Pricing Agreement [Member]
Deferred:
Total income tax expense (benefit) from continuing operations			$ 21.0