Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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Stock Based Compensation - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award
Stock options term	7 years
Restricted stock unit awards to employees	1.9	1.7
Weighted average grant date fair value of restricted stock units granted	$ 16.60	$ 16.73
Number of service-based stock options granted to executive officers	0.2	0.2
Weighted average grant date fair value of stock options granted to executive officers	$ 6.09	$ 6.85
Price paid by employees for common stock purchased through employee stock purchase plan as percentage of stock price	85.00%		85.00%
Restricted Stock Units \| Employees
Share-based Compensation Arrangement by Share-based Payment Award
Period of stock granted to employees and executive officers vest in equal installments	4 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Period of stock granted to employees and executive officers vest in equal installments	4 years
Stock Purchase Rights
Share-based Compensation Arrangement by Share-based Payment Award
Weighted average grant date fair value of stock options granted to executive officers		$ 3.75