Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Apr. 01, 2012	Jan. 01, 2012	Jan. 01, 2012
Income Tax Contingency [Line Items]
Unrecognized tax benefits, gross	$ 49.3
Uncertain tax benefits if recognized that could affect the continuing operations effective tax rate	43.9
Uncertain tax positions including accrued interest, net of tax benefits and penalties, to be resolved within the next year	9.4
Unremitted Earnings Planned To Be Repatriated			350.0
Increase (decrease) to tax provision in discontinued operations		79.7
Repatriated Foreign Earnings	$ 161.3
Open Tax Years by Major Tax Jurisdiction, Begin Date	2003
Open Tax Years by Major Tax Jurisdiction, End Date	2011