Summary of Capped Call (Equity Options) Issued (Detail) - USD ($)		1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 01, 2016	Feb. 28, 2015	Dec. 31, 2013	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015	Jan. 02, 2016	Dec. 28, 2013
Option Indexed to Issuer's Equity [Line Items]
Option Indexed to Issuer's Equity, Settlement Alternatives, Shares, at Fair Value	293,142	911,077						2,603,855
Long-term Debt			$ 345,000,000
Convertible Preferred Stock Shares Issuable Upon Conversion									4,900,000
Net Premium Paid			$ 9,700,000
Common Stock, Par or Stated Value Per Share				$ 2.50		$ 2.50		$ 2.50
Payments for Repurchase of Common Stock	$ 124,200,000	$ 326,100,000		$ 600,000	$ 192,100,000	$ 362,700,000	$ 640,100,000
Common Stock, Shares, Issued				0		0		176,902,738
Cash Settlement on Forward Stock Purchase Contract						$ 345,000,000
Stock Exercise Price Per Share Percentage Greater Than Closing Price								$ 0.4
Treasury Stock Acquired, Average Cost Per Share	$ 94.34	$ 96.46				$ 112.53
Call Option [Member]
Option Indexed to Issuer's Equity [Line Items]
Original Number of Options	3,100,000.0				9,100,000.0				12,200,000.0
Minimum [Member]
Option Indexed to Issuer's Equity [Line Items]
Common Stock, Shares, Issued								3,500,000.0
Stock Exercise Price Per Share								$ 98.80
Maximum [Member]
Option Indexed to Issuer's Equity [Line Items]
Common Stock, Shares, Issued								4,300,000
Stock Exercise Price Per Share								$ 112.91
Call Option [Member]
Option Indexed to Issuer's Equity [Line Items]
Common Stock Price Per Share									$ 2.77
Open Option Contracts Written, at Fair Value				$ 48,000,000		$ 48,000,000
Notes 2 Point 25 Percent due 2018 [Member]
Option Indexed to Issuer's Equity [Line Items]
Common Stock, Par or Stated Value Per Share								$ 100.00
Common Stock [Member]
Option Indexed to Issuer's Equity [Line Items]
Equity Units Conversion Rate Number Of Common Stock Shares						1.0157
Conversion price of convertible note (in dollars per share)				$ 98.46		$ 98.46
Common Stock [Member] | Minimum [Member]
Option Indexed to Issuer's Equity [Line Items]
Equity Units Conversion Rate Number Of Common Stock Shares								1.0122	1.0122
Payments for Repurchase of Common Stock									$ 98.80
Common Stock [Member] | Maximum [Member]
Option Indexed to Issuer's Equity [Line Items]
Equity Units Conversion Rate Number Of Common Stock Shares								1.2399	1.2399
Payments for Repurchase of Common Stock									$ 80.65
Convertible Preferred Stock [Member]
Option Indexed to Issuer's Equity [Line Items]
Conversion of Stock, Shares Issued									3,500,000.0