Income Taxes (Narrative) (Details) $ / shares in Units, DKK in Millions, $ in Millions			3 Months Ended		9 Months Ended		36 Months Ended
	Oct. 02, 2015 USD ($)	Dec. 10, 2013 DKK	Oct. 02, 2015	Sep. 26, 2014	Oct. 02, 2015 USD ($) $ / shares	Sep. 26, 2014	Dec. 31, 2012 DKK
Income Tax Examination [Line Items]
Effective income tax rate, percent			23.20%	22.40%	22.50%	22.90%
Federal statutory income tax rate, percent					35.00%	35.00%
Net discrete tax benefit (expense), amount					$ 16
Net discrete tax benefit (expense), per share, diluted | $ / shares					$ 0.02
Denmark, kroner | Foreign tax authority
Income Tax Examination [Line Items]
Income tax examination, amount of tax assessments | DKK		DKK 1,200
Income tax examination, amount of potential additional tax assessments | DKK							DKK 688
United States of America, dollars | Foreign tax authority
Income Tax Examination [Line Items]
Income tax examination, amount of tax assessments	$ 172
Income tax examination, amount of potential additional tax assessments	$ 104