Debt (Narrative) (Details) In Millions, unless otherwise specified	3 Months Ended						3 Months Ended			3 Months Ended				3 Months Ended						3 Months Ended
	Apr. 04, 2015 USD ($)	Mar. 29, 2014 USD ($)	Jan. 03, 2015 USD ($)	Apr. 04, 2015 New Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 Terminated Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 1.25% Euro Notes due 2025 [Member] USD ($)	Apr. 04, 2015 1.25% Euro Notes due 2025 [Member] Europe [Member] EUR (€)	Feb. 28, 2015 Libor plus .23% due February 2015 [Member] USD ($)	Apr. 04, 2015 3.25% Seven Year U.S. Dollar Notes Due 2018 [Member]	Apr. 04, 2015 4% Ten Year U.S. Dollar Notes due 2020 [Member]	Apr. 04, 2015 4% Ten Year U.S. Dollar Notes due 2020 [Member] New Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 4% Ten Year U.S. Dollar Notes due 2020 [Member] Terminated Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 1.75% Five Year U.S. Dollar Notes due 2017 [Member]	Apr. 04, 2015 4.45% Seven Year U.S. Dollar Notes due 2016 [Member]	Apr. 04, 2015 1.875% Five Year U.S. Dollar Notes due 2016 [Member]	Apr. 04, 2015 4.15% Ten Year U.S. Dollar Notes due 2019 [Member]	Apr. 04, 2015 4.15% Ten Year U.S. Dollar Notes due 2019 [Member] New Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 4.15% Ten Year U.S. Dollar Notes due 2019 [Member] Terminated Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 3.125% Ten Year U.S. Dollar Notes Due 2022 [Member]	Apr. 04, 2015 3.125% Ten Year U.S. Dollar Notes Due 2022 [Member] New Interest Rate Swap [Member] USD ($)	Apr. 04, 2015 3.125% Ten Year U.S. Dollar Notes Due 2022 [Member] Terminated Interest Rate Swap [Member] USD ($)
Debt Instrument [Line Items]
Unrealized gain gain on termination of interest rate fair value hedge					$ 26
Notional amounts of interest rate swaps	2,997		4,214	558	1,500	1,400
Debt Instrument, Face Amount							658	600	250			200	500					300	800		58	216
Debt instrument term, in years							10 years			7 years	10 years			5 years	7 years	5 years	10 years			10 years
Debt instrument maturity year							2025			2018	2020			2017	2016	2016	2019			2022
Debt instrument, stated interest rate							1.25%			3.25%	4.00%	4.00%	4.00%	1.75%	4.45%	1.875%	4.15%	4.15%	4.15%	3.125%	3.125%	3.125%
Effective interest rate										1.87%	2.59%			1.34%	3.41%	1.58%	3.86%			2.03%
Repayment of long-term debt	$ 243	$ 682