Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended				3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 28, 2014 Segment	Dec. 28, 2013	Jun. 29, 2013	Dec. 29, 2012	Jun. 28, 2014 Receivables Sold Under Factoring Agreement during the period	Jun. 28, 2014 Receivables Sold Under Factoring Agreement during the period	Jun. 28, 2014 Receivables	Dec. 28, 2013 Receivables	Jun. 28, 2014 Prepaid Expenses and Other Current Assets	Dec. 28, 2013 Prepaid Expenses and Other Current Assets	Jun. 28, 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	$ 92	$ 118
Cash and cash equivalents	768	948	472	671							324
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					124	251	13	10
Factoring agreement, retention guarantee									$ 12	$ 13