Shareholders' Equity - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	6 Months Ended			6 Months Ended				1 Months Ended	6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Dec. 31, 2013	Jun. 29, 2013 October 2012 Share Repurchase Program [Member]	Jun. 28, 2014 December 2013 Share Repurchase Program [Member]	Jun. 29, 2013 December 2013 Share Repurchase Program [Member]	Jun. 28, 2014 Stock Repurchase Program [Member]	Oct. 30, 2012 Stock Repurchase Program [Member] Maximum	Jun. 29, 2013 Stock Repurchase Program [Member] Maximum	Jun. 28, 2014 Payable Q4 2014	Jun. 28, 2014 Payable Q1 2015	Jun. 28, 2014 Payable Q2 2015	Jun. 28, 2014 Payable Q3 and Q4 2014 and Q1 and Q2 2015	Jun. 28, 2014 Payable Q3 2014
Stockholders Equity Note Disclosure [Line Items]
Repurchase of shares of our common stock up to a maximum aggregate value					$ 1,000.0			$ 800.0	$ 400.0
Common stock authorized for repurchase, expiration date				Dec. 31, 2015		Dec. 31, 2016
Share repurchase program remaining available amount					699.3		0
Share repurchase (in shares)							5.8
Repurchase of common stock, value	450.7	490.3					450.7
Dividends payable amount (USD per share)										$ 0.30	$ 0.30	$ 0.30	$ 1.20	$ 0.30
Dividends payable	$ 231.1		$ 98.7