Income Taxes (Narrative) (Details) $ / shares in Units, DKK in Millions, $ in Millions			3 Months Ended		6 Months Ended		36 Months Ended
	Jul. 03, 2015 USD ($)	Dec. 10, 2013 DKK	Jul. 03, 2015 USD ($) $ / shares	Jun. 27, 2014	Jul. 03, 2015	Jun. 27, 2014	Dec. 31, 2012 DKK
Income Tax Examination [Line Items]
Effective income tax rate, percent			23.00%	23.00%	23.30%	23.40%
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 675
United States of America, dollars | Foreign tax authority
Income Tax Examination [Line Items]
Income tax examination, amount of tax assessments	$ 178
Income tax examination, amount of potential additional tax assessments	$ 100
Communications business | Test & Measurement
Income Tax Examination [Line Items]
Net discrete tax benefit (expense), amount			$ (17)
Net discrete tax benefit (expense), per share, diluted | $ / shares			$ 0.02