Exercise price of the warrants.

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Changes in Shareholder's Equity - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2007	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Shareholders Equity [Line Items]
Repurchase of outstanding common stock, authorized amount	$ 300
Per share market price of common stock		$ 61.32		$ 61.32
Strike price of warrants				$ 74.65	$ 74.65
Conversion of convertible notes, shares issued upon conversion		1.9	0.4	1.7	0.3
Stock Option
Shareholders Equity [Line Items]
Weighted average antidilutive which were not included in the calculation of earnings per share		6.4	7.9	6.5	7.9
Convertible Note
Shareholders Equity [Line Items]
Weighted average antidilutive which were not included in the calculation of earnings per share		2.7	1.5	2.6	1.4