Income Taxes (Details) - USD ($) $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Nov. 30, 2014	Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016	Sep. 26, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective tax rate on income from continuing operations				16.40%	11.50%	17.20%	37.30%
Income Tax Contingency [Line Items]
Unrecognized tax benefits, including income tax penalties and interest accrued				$ 386.9		$ 386.9		$ 340.3
Unrecognized tax benefits liability, interest and penalties accrued				$ 62.5		$ 62.5		$ 52.1
Income tax examination, penalties and interest expense			$ 8.0
Incremental tax obligation		$ 68.9
All Other Entities
Income Tax Contingency [Line Items]
Foreign statutory corporate tax rate, year one	26.50%
Foreign statutory corporate tax rate, current year	25.00%
Foreign Tax Authority | Maximum
Income Tax Contingency [Line Items]
Foreign statutory corporate tax rate						18.00%
Foreign Tax Authority | Minimum
Income Tax Contingency [Line Items]
Foreign statutory corporate tax rate						17.00%