Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended				3 Months Ended	9 Months Ended
	Sep. 27, 2014 Segment	Dec. 28, 2013	Sep. 28, 2013	Dec. 29, 2012	Sep. 27, 2014 Receivables Sold Under Factoring Agreement during the period	Sep. 27, 2014 Receivables Sold Under Factoring Agreement during the period	Dec. 28, 2013 Receivables Sold Under Factoring Agreement during the period	Sep. 27, 2014 Prepaid Expenses and Other Current Assets	Dec. 28, 2013 Prepaid Expenses and Other Current Assets	Sep. 27, 2014 Outside The United States
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments	3
Accounts payable and accrued expenses and other current liabilities not yet presented for payment	$ 84	$ 118
Cash and cash equivalents	965	948	725	671						287
Factoring agreement, percentage of face value of receivable advanced by the financial institution	80.00%
Factoring agreement, percentage of face value of receivable retained by the financial institution as guarantee	20.00%
Receivables under Factoring Agreement					109	360
Receivables net	1,308	1,314			13	13	10
Factoring agreement, retention guarantee								$ 11	$ 13