Derivative Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Mar. 30, 2013	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014 Senior Notes [Member] Three point twenty-five percent Senior Notes Due Two Thousand Twenty-three [Member]	Apr. 02, 2013 Senior Notes [Member] Three point twenty-five percent Senior Notes Due Two Thousand Twenty-three [Member]	Sep. 27, 2014 Senior Notes [Member] Four point seventy-five percent Senior Notes Due Two Thousand Fourty-three [Member] [Member]	Apr. 02, 2013 Senior Notes [Member] Four point seventy-five percent Senior Notes Due Two Thousand Fourty-three [Member] [Member]
Derivatives, Fair Value [Line Items]
The net amount of gains/(loss) recorded to other expense, net	$ 7		$ 3	$ 13
Debt Instrument, Face Amount					900	900	700	700
Proceeds from Hedge, Financing Activities		$ 3