Shareholder's Equity - Additional Information (Detail)									1 Months Ended
	Sep. 29, 2012 USD ($)	Sep. 29, 2012 CHF	Dec. 31, 2011	Oct. 01, 2011	Sep. 29, 2012 Fourth Quarter Twenty Twelve USD ($)	Sep. 29, 2012 First Quarter Twenty Thirteen USD ($)	Sep. 29, 2012 Second Quarter Twenty Thirteen USD ($)	Sep. 29, 2012 Stock Repurchase Program USD ($)	Oct. 01, 2012 Subsequent Event Stock Repurchase Program USD ($)	Sep. 29, 2012 Exercise of Warrants and Conversion of Notes	Sep. 29, 2012 Stockholder Rights Plan
Stockholders Equity Note Disclosure [Line Items]
Common Stock, share Authorized	213,000,000	213,000,000	250,000,000	250,000,000
Common Stock, Par or Stated Value Per Share		0.50
Maximum Annual Authorized Share Increase	106,500,000	106,500,000								81,500,000	25,000,000
Repurchase of shares of our common stock up to a maximum aggregate value								$ 400,000,000	$ 800,000,000
Common Stock Authorized for Repurchase, Expiration Date									Dec. 31, 2015
Repurchase of Common Stock, Shares									2,400,000
Repurchase of Common Stock, Value									105,000,000
Dividends Payable Amount Per Share	$ 0.68				$ 0.22	$ 0.23	$ 0.23
Dividend Payable	$ 142,999,000